WO2021047642A1 - 园林工具 - Google Patents

园林工具 Download PDF

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Publication number
WO2021047642A1
WO2021047642A1 PCT/CN2020/114802 CN2020114802W WO2021047642A1 WO 2021047642 A1 WO2021047642 A1 WO 2021047642A1 CN 2020114802 W CN2020114802 W CN 2020114802W WO 2021047642 A1 WO2021047642 A1 WO 2021047642A1
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WO
WIPO (PCT)
Prior art keywords
driven shaft
frame
shaft
barrel
garden tool
Prior art date
Application number
PCT/CN2020/114802
Other languages
English (en)
French (fr)
Inventor
李兴红
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 CN201921504051.2U external-priority patent/CN211001607U/zh
Priority claimed from CN201910855476.6A external-priority patent/CN112478008A/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 WO2021047642A1 publication Critical patent/WO2021047642A1/zh

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B62—LAND VEHICLES FOR TRAVELLING OTHERWISE THAN ON RAILS
    • B62D—MOTOR VEHICLES; TRAILERS
    • B62D55/00—Endless track vehicles
    • B62D55/08—Endless track units; Parts thereof
    • B62D55/30—Track-tensioning means

Definitions

  • the invention relates to a garden tool, belonging to the field of electric tools.
  • Crawler lawn mowers usually include a frame, a walking mechanism arranged under the frame, a working mechanism arranged on the frame to perform mowing tasks, and a driving mechanism that drives the working mechanism.
  • the walking mechanism includes driving wheels arranged oppositely. , Driven wheel and crawler belts tensioned on the drive wheel and driven wheel.
  • the existing crawler lawn mowers generally have the following problems:
  • the object of the present invention is to provide a garden tool, which can realize the tensioning of the crawler to prevent the crawler from falling off.
  • a garden tool comprising a frame, a walking mechanism arranged under the frame to move the garden tool, and work arranged on the frame to perform work tasks Mechanism and a drive mechanism for driving the working mechanism to run
  • the walking mechanism includes a drive shaft arranged on the frame, a drive wheel arranged on the drive shaft, and a drive wheel arranged on the frame and opposite to the A driven shaft arranged in parallel with the drive shaft, a driven wheel arranged on the driven shaft, and a crawler tensioned on the drive wheel and the driven wheel
  • the garden tool further includes a tensioner arranged on the frame
  • the driven shaft is movably mounted on the frame body through the swing rod, and the tensioning mechanism is arranged on one side of the driven shaft and exerts on the driven shaft so that the driven shaft The force of the moving shaft relatively far away from the drive shaft.
  • the tensioning mechanism includes an elastic member.
  • the tensioning mechanism includes a first barrel-shaped shell and a second barrel-shaped shell, the first barrel-shaped shell is sleeved outside the second barrel-shaped shell, and the first barrel-shaped shell
  • the body and the second barrel-shaped shell surround an elastic cavity for accommodating the elastic member.
  • the first barrel-shaped shell can be opposed to the second barrel along the extension direction of the second barrel-shaped shell.
  • the shaped housing moves, and one of the first barrel-shaped housing and the second barrel-shaped housing abuts the driven shaft.
  • one of the first barrel-shaped shell and the second barrel-shaped shell is provided with a sliding block, and the other of the first barrel-shaped shell and the second barrel-shaped shell is provided with a receiving place.
  • the sliding groove of the sliding block has a stop surface arranged oppositely and used to limit the sliding distance of the sliding block.
  • the sliding length of the sliding block on the sliding groove is less than or equal to the maximum telescopic length of the elastic member.
  • one of the first barrel-shaped housing and the second barrel-shaped housing has a resisting portion for resisting the driven wheel, and the resisting portion is formed with a support for accommodating the driven shaft. Storage slot.
  • the frame body is provided with a sliding groove extending in the radial direction of the driven wheel, the driven shaft is partially inserted into the sliding groove, and the frame body is provided with a sliding groove that pushes the driven shaft.
  • a wheelbase adjusting mechanism that moves relative to the drive shaft to change the wheelbase between the driven shaft and the drive shaft.
  • the wheelbase adjusting mechanism includes an elastic member arranged on the frame to apply a pushing force on the driven shaft to move the driven shaft in the direction of the driving shaft, and an elastic member that can be mounted on the driven shaft
  • a pressure component that selectively applies pressure on the upper side, the pressure component pushes the driven shaft to move away from the drive shaft to make the crawler track in a tensioned state, and the pressure force is greater than the pushing force;
  • the elastic member pushes the driven shaft to move in the direction of the drive shaft so that the wheel distance between the driven shaft and the drive shaft is smaller than that of the crawler. The center distance when tensioned.
  • the swing rod has a first end that is rotatably mounted on the frame and a second end that is in contact with the driven shaft to push the driven shaft to move, and the elastic member is provided on the first end. Between one end and the frame body, a pushing force is applied to the pendulum rod to swing the pendulum rod toward the drive shaft.
  • driven shafts are all connected by a swing rod shaft.
  • the tensioning mechanism is arranged in the sliding groove, and the tensioning mechanism is clamped between the pressing component and the driven shaft.
  • the pressing assembly includes a cam mounted on the frame body, and the cam rotates relative to the frame body to push the driven shaft to move away from the drive shaft.
  • a knob for external force is provided on the cam.
  • the pressing component includes an insert that moves in the sliding groove along the axis of the driven shaft to push the driven shaft to move away from the drive shaft.
  • the pressing assembly includes a guide member connected with the driven shaft, the guide member is provided with a first inclined surface facing the drive shaft, and the plug-in is provided with a first inclined surface to cooperate with the first inclined surface.
  • the second slope is provided.
  • the insert is fixed on the frame body by a fastener.
  • an insertion space for the plug-in to move along the axis of the driven shaft is formed in the sliding groove, and a groove wall on one side of the insertion space is provided with a fastener for the fastening connection Fastening holes.
  • the pressing component includes a folding piece, one end of the folding piece is mounted on the frame body, and the other end is connected with the driven shaft, and the folding piece is folded or stretched to change the relative position of the driven shaft. The distance between the drive shafts.
  • the pressing component further includes a pressing block for pressing the folding element to unfold the folding element.
  • the folding member includes a first sheet body mounted on the frame and a second sheet body connected to the driven shaft and hinged to the first sheet body, and the pressure block resists The first sheet-shaped body and the second sheet-shaped body.
  • an elastic element that keeps the first sheet-shaped body and the second sheet-shaped body in a bent state, or the first sheet-shaped body
  • An elastic element is provided between the body and the frame body to make the first sheet-shaped body turn in the direction of the drive shaft, or between the second sheet-shaped body and the frame body is provided to make the direction of the driven shaft Flip the elastic element.
  • the pressing component includes a bending piece, one end of the bending piece is installed on the frame body, the other end is connected with the driven shaft, and the bending piece is bent or stretched to change the follower The distance between the moving shaft and the drive shaft.
  • the pressing component further includes a pressing block for pressing the folding element to stretch the folding element.
  • the beneficial effect of the present invention is that the garden tool of the present invention is provided with a tensioning mechanism on the frame, and the tensioning mechanism drives the driven shaft to move away from the drive shaft to adjust the tension of the crawler belt, thereby preventing The crawler belt falls off, and because the driven shaft and the frame are connected by a swing rod, the force required by the tensioning mechanism on the driven shaft is smaller, which makes the adjustment more sensitive and helps reduce costs;
  • the tensioning mechanism is provided, the tensioning force of the crawler can be adjusted according to different terrains, so that the garden mechanism can adapt to various complicated working conditions, especially when the grass has ditch and slope.
  • Figure 1 is a state diagram of the traveling mechanism in the first state of the first embodiment of the present invention
  • Figure 2 is a cross-sectional view of the traveling mechanism shown in Figure 1 in a first state
  • Figure 3 is a state diagram of the traveling mechanism in the first embodiment in the second state
  • Figure 4 is a partial structure diagram in Figure 1;
  • Figure 5 is an assembly diagram of the tensioning mechanism, the swing rod and the knob in the first embodiment
  • FIG. 6 is a state diagram of the traveling mechanism in the first state in the second embodiment of the present invention.
  • Figure 7 is a state diagram of the second embodiment when the plug-in is inserted halfway;
  • Figure 8 is a state diagram of the walking mechanism in the second embodiment in the second state
  • Figure 9 is a schematic diagram of the structure of the plug-in in the second embodiment.
  • Figure 10 is a state diagram of the walking mechanism in the first state of the third embodiment of the present invention.
  • Figure 11 is an intermediate state diagram of the walking mechanism in the third embodiment when the crawler is quickly replaced
  • Fig. 12 is a state diagram of the walking mechanism of the third embodiment in the second state.
  • the garden tool includes a frame, a walking mechanism arranged under the frame to move the garden tool, a working mechanism arranged on the frame to perform work tasks, and a driving mechanism that drives the operation of the working mechanism.
  • Garden tools can be named with different names according to different working mechanisms.
  • the working mechanism is a cutting piece for performing cutting tasks, and is mainly used for mowing. Therefore, in this embodiment, the garden tool is a cutting tool.
  • Lawn mower Specifically, the lawn mower is an intelligent lawn mower, and an intelligent control system is loaded on the intelligent lawn mower to realize that the lawn mower can cut the grass according to a prescribed route and automatically return to a designated place for charging.
  • the control system can Apply existing technology.
  • the driving mechanism in the lawn mower is formed by conventional components such as a motor and a reducer, and the working mechanism also adopts the existing technology, which will not be repeated.
  • the traveling mechanism includes a drive shaft 2 arranged on the frame 1, a drive wheel 3 arranged on the drive shaft 2, and a driven shaft arranged on the frame 1 and parallel to the drive shaft 2. 4.
  • the driven wheel 5 provided on the driven shaft 4, the crawler belt 6 tensioned on the driving wheel 3 and the driven wheel 5, and the tensioning mechanism 7 provided on the frame 1.
  • the driven shaft 4 is movably mounted on the frame 1.
  • a swing rod 9 is provided on the inner side plate 11 of the base.
  • the driven shaft 4 is movably mounted on the frame through the swing rod 9.
  • the tension mechanism 7 Set on the side of the driven shaft 4 and exert a force on the driven shaft 4 to make the driven shaft 4 relatively far away from the drive shaft 2, as shown in Figure 3, the force exerted by the tensioning mechanism 7 pushes the driven shaft 4 away from the drive
  • the moving direction of the shaft 2 is the direction indicated by the arrow d in FIG. 3.
  • the driving wheel 3 is mounted on the drive shaft 2 through a bearing (not labeled), and the driven wheel 5 is mounted on the driven shaft 4 through a bearing (not labeled).
  • the frame 1 has a downwardly vertical base inner plate 11, and the base inner plate 11 is located inside the driving wheel 3 and the driven wheel 5 in the width direction of the garden tool.
  • the driving shaft 2 and the driven shaft 4 are mounted on the inner side plate 11 of the base through bearings (not labeled).
  • a tensioning mechanism 7 on the frame 1
  • the driven shaft 4 is driven to move away from the drive shaft 2 by the tensioning mechanism 7 to adjust the tension of the crawler belt 6 so as to prevent the crawler belt 6 from falling off.
  • the tensioning mechanism 7 Since the tensioning mechanism 7 is provided, the tensioning force of the crawler 6 can be adjusted according to different terrains, so that the lawn mower can adapt to various complicated working conditions, especially when the grass has ditch and slope. Big advantage.
  • the tensioning mechanism 7 includes an elastic member, specifically a spring 71.
  • the spring 71 is provided on the side of the driven shaft 4 close to the driving shaft 2.
  • the central axis of the spring 71 overlaps with the central axis of the walking mechanism.
  • the line a represents the central axis of the walking mechanism. Since the spring 71 has a certain elasticity, when the crawler belt 6 is slack, the spring 71 can move the driven shaft 4 away from the drive shaft 2 (the direction indicated by the arrow d in Figure 3) according to its elastic force, and then drive it.
  • the driven wheel 5 on the driven shaft 4 moves in a direction away from the driving wheel 3 to make the crawler 6 stretched.
  • the tensioning mechanism 7 is a spring 71, it has a certain compression capacity, so when the driven wheel 5 When the applied force is greater than the elastic force of the spring 71, the driven shaft 4 will move in the direction of the drive shaft 2 (in the direction of arrow c in Figure 1) to compress the spring 71, thereby releasing the crawler 6 and preventing the transition of the crawler 6 Tension causes fatigue damage.
  • the tensioning mechanism 7 further includes a first barrel-shaped housing 72 and a second barrel-shaped housing 73, and the first barrel-shaped housing 72 It is sleeved outside the second barrel-shaped shell 73.
  • the first barrel-shaped shell 72 and the second barrel-shaped shell 73 surround and form an elastic cavity 74 for accommodating the spring 71.
  • the extension direction of the second barrel-shaped housing 73 moves relative to the second barrel-shaped housing 73.
  • One of the first barrel-shaped housing 72 and the second barrel-shaped housing 73 abuts the driven shaft 4, in order to facilitate communication with the driven shaft.
  • the shaft 4 is matched, one of the first barrel-shaped housing 72 and the second barrel-shaped housing 73 has a resisting portion 721 for resisting the driven wheel 5, and the resisting portion 721 is formed to accommodate the driven shaft 4 Storage slot 722.
  • the first barrel-shaped housing 72 has a receiving groove 722 for accommodating the driven shaft 4.
  • the first barrel-shaped housing 72 is perpendicular to the driven shaft 4, and the central axis of the receiving groove 722 is Parallel to the central axis of the driven shaft 4, the driven shaft 4 is inserted into the receiving groove 722.
  • the driven shaft 4 has a mating rod 41 for mounting the driven wheel 5 and a self-fitting rod 41 outwards. The extended mating end 42 is inserted into the receiving groove 722.
  • the assembly part between the driven shaft 4 and the receiving groove 722 can also be arranged in other places, as in this embodiment.
  • One of the purposes is to facilitate assembly, and the second is to make the overall structure more compact.
  • a sliding groove 12 extending in the radial direction of the driven wheel 5 is provided on the inner side plate 11 of the base, and the mating end 42 of the driven shaft 4 is inserted Into the sliding groove 12, such arrangement can limit the moving direction of the driven wheel 5, and at the same time, the tensioning mechanism 7 can be arranged in the sliding groove 12.
  • one of the first barrel-shaped housing 72 and the second barrel-shaped housing 73 is provided with a sliding block 75, and the first barrel-shaped housing
  • the body 72 and the second barrel-shaped housing 73 are provided with a sliding groove 76 for accommodating the sliding block 75.
  • the sliding groove 76 has a stop surface arranged oppositely and used to limit the sliding distance of the sliding block 75 751.
  • the sliding length of the sliding block 75 on the sliding groove 76 is less than or equal to the maximum telescopic length of the elastic member.
  • the spring 71 is a compression spring, so the spring 71 is arranged on the side of the driven shaft 4 close to the drive shaft.
  • the spring may also be a tension spring. It is arranged on the side of the driven shaft 4 away from the drive shaft. When the crawler belt 6 needs to be tensioned, the spring will move the driven shaft 4 away from the drive shaft 2 due to its elastic force (compression force at this time).
  • the frame body 1 is also provided with a wheelbase adjusting mechanism that pushes the driven shaft 4 to move relative to the drive shaft 2 to change the wheelbase between the driven shaft 4 and the drive shaft 2.
  • a wheelbase adjusting mechanism that pushes the driven shaft 4 to move relative to the drive shaft 2 to change the wheelbase between the driven shaft 4 and the drive shaft 2.
  • the driven shaft 4 is pushed to move quickly in the direction of the drive shaft 2 (in the direction indicated by the arrow c in Figure 1) to quickly make the wheelbase between the driven shaft 4 and the drive shaft 2 smaller than the track 6
  • the center distance in the tensioned state further relaxes the crawler 6 to disassemble the old crawler.
  • the wheelbase adjustment mechanism pushes the driven shaft 4 to move quickly away from the drive shaft 2 ( Figure 3 The direction indicated by the arrow d) in order to quickly make the axle distance between the driven shaft 4 and the drive shaft 2 reach the center distance when the crawler belt 6 is under tension, so as to realize the rapid replacement of the crawler belt 6.
  • the wheelbase x between the driven shaft 4 and the drive shaft 2 in FIG. 1 is smaller than the wheelbase y between the driven shaft 4 and the drive shaft 2 in FIG. The center distance when tensioned.
  • the wheelbase adjustment mechanism includes an elastic member arranged on the inner side plate 11 of the base to apply a pushing force on the driven shaft 4 to move the driven shaft 4 toward the driving shaft 2 (the direction indicated by the arrow c in FIG. 1) (Not shown), and a pressure component 8 that can selectively apply pressure on the driven shaft 4, the pressure component 8 pushes the driven shaft 4 to move away from the drive shaft 2 (arrow d in Figure 3 (Referred to in the direction) to make the crawler 6 in a tensioned state (as shown in Figure 3), the pressing force is greater than the pushing force, when the pressing component 8 cancels the pressing force on the driven shaft 4, the elastic member pushes the driven shaft 4 toward The drive shaft 2 moves in the direction so that the wheel distance between the driven shaft 4 and the drive shaft 2 is smaller than the center distance when the crawler belt 6 is in a tensioned state (as shown in FIG.
  • the tensioning mechanism 7 is clamped between the pressing assembly 8 and the driven shaft 4.
  • the elastic force of the spring 71 in the tensioning mechanism 7 is less than the pressing force and the pushing force, and the tensioning mechanism 7
  • the tension adjustment that can be achieved by the spring 71 is fine adjustment.
  • the fine adjustment realized by the spring 71 makes the moving distance of the driven wheel 5 smaller than the moving distance of the driven wheel 5 after the pressing force or the pushing force is applied to the driven wheel 5. Therefore, when When the track 6 needs to be replaced quickly, the force exerted by the tension mechanism 7 on the driven wheel 5 will not affect the moving distance of the driven wheel 5.
  • the pendulum rod 9 has a first end 91 that is rotatably mounted on the inner side plate 11 of the base and a second end 92 that is in contact with the driven shaft 4 to push the driven shaft 4 to move. Between the one end 91 and the inner side plate 11 of the base, a driving force is applied to the swing rod 9 to swing the swing rod 9 toward the drive shaft 2.
  • the first end 91 of the pendulum rod 9 and the inner side plate 11 of the base, and the second end 92 and the driven shaft 4 are all connected by a pendulum rod shaft 93.
  • the elastic member is a torsion spring. In other embodiments, the elastic member can also be a tension spring or a compression spring according to the set position.
  • the pressing assembly 8 includes a cam 82 mounted on the inner side plate 11 of the base.
  • the cam 82 rotates relative to the inner side plate 11 of the base to push the driven shaft 4 to move away from the drive shaft.
  • a mounting shaft 14 protruding outward is formed on the inner side plate 11 of the base.
  • the mounting shaft 14 is arranged in parallel with the driven shaft 4, and the cam 82 is sleeved on the mounting shaft 14.
  • the cam 82 is provided with a knob 83 for external force.
  • the knob 83 can drive the cam 82 to rotate to increase or remove the pushing force.
  • the cam 82 is also arranged in the sliding groove 12, the outside of the cam 82 is encapsulated by the pressing plate 13 to prevent the cam 82 from moving out of the sliding groove 12, and the knob 83 is located on the outside of the pressing plate 13.
  • the cam 82 has a 1/4 radius gradually changing wheel structure.
  • the crawler 6 when the crawler 6 is tensioned on the driven wheel 5 and the driving wheel 3, it can be called the second state (the state shown in Figure 3), see Figure 3.
  • the driven The axle distance y between the shaft 4 and the drive shaft 2 is roughly the center distance when the crawler belt 6 is in a tensioned state.
  • the highest point of the cam 82 abuts the tensioning mechanism 7 to apply a pressing force on the tensioning mechanism 7.
  • the tensioning mechanism 7 transmits the pressing force to the driven shaft 4.
  • the position of the driven shaft 4 can be referred to as the second position.
  • the specific working mode of the walking mechanism to quickly replace the crawler 6 is as follows: when the knob 83 rotates, the cam 82 rotates, and the highest point of the cam 82 gradually moves away from the tensioning mechanism 7, and the cam 82 The pressing force exerted on the tensioning mechanism 7 gradually decreases and even tends to zero. At this time, the pressing force is greater than the pushing force, and the elastic member drives the pendulum rod 9 to swing in the direction of the drive shaft with the first end 91 as the center point.
  • the swing lever 9 drives the driven shaft 4 to move in the direction of the drive shaft 2 (in the direction shown by the arrow c in Figure 1), so that the crawler belt 6 is no longer tensioned between the driven wheel 5 and the drive wheel 3 (the driven shaft 4 and The wheelbase between the drive shafts 2 becomes smaller and smaller than the center distance when the crawler belt 6 is under tension.
  • the wheelbase between the driven shaft 4 and the drive shaft 2 becomes x).
  • the position of the driven wheel 4 is the first position.
  • the old crawler 6 on the driven shaft 4 and the drive shaft 2 can be removed and replaced with a new one.
  • the crawler 6 when the new crawler 6 is replaced, turn the knob 83 again, the highest point of the cam 82 gradually approaches the tensioning mechanism 7 until it resists the tensioning mechanism 7, and the driving force is transmitted from the tensioning mechanism 7 to the driven shaft 4 ,
  • the driven shaft 4 is pushed by the tensioning mechanism 7 to move away from the drive shaft 2 (the direction indicated by the arrow d in Figure 3), so that the position of the driven shaft 4 changes, and the driven shaft 4 changes from the first position In the second position, the new crawler 6 is tensioned on the driven shaft 4 and the drive shaft 2 to complete the replacement of the new and old crawler 6.
  • the tensioning mechanism 7 is arranged between the driven shaft 4 and the cam 82, in addition to making the overall structure more compact, another purpose is that the spring 71 in the tensioning mechanism 7 is located in the first position of the crawler 6 In the state and the second state, the rigid impact is reduced.
  • the structure of the compression component can also adopt the structure shown in FIGS. 6-12.
  • the pressing component 8' includes a sliding groove 12 that moves along the axis of the driven shaft 4 (the direction indicated by the arrow c in Figure 6) to push the driven shaft 4 to move away from the drive shaft.
  • the plug-in 81' The plug-in 81'.
  • the insert 81' is fixed on the inner side plate 11 of the base by a fastener 82', thereby preventing the insert 81' from moving outward from the sliding groove 12 in the axial direction of the driven shaft 4, thereby causing unstable installation of the crawler belt 6,
  • a fastener 82 is provided on the groove wall (not labeled) on one side of the insertion space 15'.
  • 'Fastening hole 16' for fastening the connection.
  • the pressing assembly 8' when the crawler 6 is replaced, the plug-in 81' is directly pulled out of the sliding slot 12 interface, but in order to facilitate the plug-in 81' to be inserted into the sliding slot 12, the pressing assembly 8' also includes a driven shaft 4
  • the connecting guide 83' is provided with a first inclined surface 831' (that can be referred to as a guide surface) facing the drive shaft 2 on the guide 83', and a second inclined surface 831' is provided on the plug-in unit 81' to cooperate with the first inclined surface 831'. Slope 811'.
  • the pressing component includes a folding piece 81" and a pressing block 82" for holding the folding piece 81" to unfold the folding piece 81", one end of the folding piece 81" is installed on the inner side plate 11 of the base , The other end is connected to the driven shaft 4, and the folding member 81" is folded or stretched to change the distance between the driven shaft 4 and the drive shaft (not shown).
  • the folder 81" includes a first sheet body 811" installed on the inner side plate 11 of the base, a second sheet body 812" connected to the driven shaft 4 and hinged to the first sheet body 811", and a pressing block 82" To resist the first sheet body 811 ′′ and the second sheet body 812 ′′, in this embodiment, the second sheet body 812 ′′ is hinged on the second barrel shell 73 of the tensioning mechanism 7.
  • the first sheet-shaped body 811" and the second sheet-shaped body 812" are provided with a first sheet-shaped body 811" and a second sheet-shaped body 812".
  • the body 812" maintains an elastic element in a bent state, or an elastic element is arranged between the first sheet-shaped body 811" and the inner side plate 11 of the base to turn the first sheet-shaped body 811" in the direction of the drive shaft, or the second An elastic element is arranged between the sheet-shaped body 812" and the inner side plate 11 of the base to turn the driven shaft 4 directions inverted.
  • the shielding member can be replaced by a bending member. Specifically, one end of the bending member is installed on the inner side plate 11 of the base, and the other end is connected with the driven shaft 4, and the bending member is bent or stretched to change the relative driving of the driven shaft 4 The distance between the axes.
  • the pressing block 82" abuts the folding member 81" to extend the folding member 81".
  • the bending member may be an arc-shaped elastic sheet or the like.

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Abstract

一种园林工具，属于电动工具领域，包括架体（1）、设置在架体（1）下方以使该园林工具移动的行走机构、设置在架体（1）上用以执行工作任务的工作机构及驱动工作机构运行的驱动机构，行走机构包括设置在架体（1）上的驱动轴（2）、设置在驱动轴（2）上的驱动轮（3）、设置在架体（1）上且相对驱动轴（2）平行设置的从动轴（4）、设置在从动轴（4）上的从动轮（5）及张紧在驱动轮（3）和从动轮（5）上的履带（6），园林工具还包括设置在架体（1）上的张紧机构（7）和摆杆（9），从动轴（4）通过摆杆（9）活动安装在架体（1）上，张紧机构（7）设置在从动轴（4）一侧并在从动轴（4）上施加使从动轴（4）相对远离驱动轴（2）的力。

Description

园林工具
本申请要求了申请日为2019年09年11日，申请号为201910855476.6和201921504051.2的中国专利申请的优先权，其全部内容通过引用结合在本申请中。
技术领域
本发明涉及一种园林工具，属于电动工具领域。
背景技术
履带式割草机通常包括架体、设置在架体下方的行走机构、设置在架体上用以执行割草任务的工作机构及驱动工作机构运行的驱动机构，行走机构包括相对设置的驱动轮、从动轮及张紧在驱动轮和从动轮上的履带。现有的履带式割草机普遍存在如下问题：
1、使用履带磨损老化后，无法更换不方便，或者无法更换；
2、履带张紧在驱动轮和从动轮上后，在使用一段时间后，容易松弛，致使行走不平稳或者不稳定，更甚至发生履带脱落的问题。
发明内容
本发明的目的在于提供一种园林工具，其可实现张紧履带以防止履带脱落。
为达到上述目的，本发明提供如下技术方案：一种园林工具，包括架体、设置在所述架体下方以使该园林工具移动的行走机构、设置在架体上用以执行工作任务的工作机构及驱动所述工作机构运行的驱动机构，所述行走机构包括设置在所述架体上的驱动轴、设置在所述驱动轴上的驱动轮、设置在所述架体上且相对所述驱动轴平行设置的从动轴、设置在所述从动轴上的从动轮及张紧在所述驱动轮和从动轮上的履带，所述园林工具还包括设置在所述架体上的张紧机构和摆杆，所述从动轴通过摆杆活动安装在所述架体上，所述张紧机构设置在所述从动轴一侧并在所述从动轴上施加使所述从动轴相对远离所 述驱动轴的力。
进一步的，所述张紧机构包括弹性件。
进一步的，所述张紧机构包括第一桶状壳体和第二桶状壳体，所述第一桶状壳体套设在所述第二桶状壳体外，所述第一桶状壳体和第二桶状壳体围设形成用以容置所述弹性件的弹性腔，所述第一桶状壳体可沿所述第二桶状壳体的延伸方向相对所述第二桶状壳体移动，所述第一桶状壳体、第二桶状壳体其中之一抵持所述从动轴。
进一步的，所述第一桶状壳体、第二桶状壳体之一上设置有滑移块，所述第一桶状壳体、第二桶状壳体另一上设置有容置所述滑移块的滑移槽，所述滑移槽具有相对设置且用以限制所述滑移块的滑移距离的止档面。
进一步的，所述滑移块在滑移槽上的滑移长度小于或等于弹性件的最大伸缩长度。
进一步的，所述第一桶状壳体、第二桶状壳体其中之一具有抵持所述从动轮的抵持部，所述抵持部上形成有用以容置所述从动轴的收纳槽。
进一步的，所述架体上设置有沿所述从动轮的径向延伸的滑动槽，所述从动轴部分插入至所述滑动槽内，所述架体上设置有推动所述从动轴朝相对所述驱动轴移动以改变从动轴与驱动轴之间的轴距的轴距调节机构。
进一步的，所述轴距调节机构包括设置在所述架体上以在所述从动轴上施加推动力以使从动轴朝驱动轴方向移动的弹力件、及可在所述从动轴上选择性地施加抵压力的抵压组件，所述抵压组件推动所述从动轴朝远离所述驱动轴的方向移动进而使所述履带处于张紧状态，所述抵压力大于推动力；当所述抵压组件在所述从动轴上撤销抵压力，所述弹力件推动所述从动轴朝驱动轴方向移动进而使所述从动轴与驱动轴的轴距小于所述履带处于张紧状态时的中心距。
进一步的，所述摆杆具有转动安装在所述架体上的第一端和与所述从动轴接触以推动所述从动轴移动的第二端，所述弹力件设置在所述第一端与架体之间以在所述摆杆上施加使所述摆杆朝所述驱动轴方向摆动的推动力。
进一步的，从动轴之间均通过摆杆轴连接。
进一步的，所述张紧机构设置在所述滑动槽内，所述张紧机构夹持在所述抵压组件与从动轴之间。
进一步的，所述抵压组件包括安装在所述架体上的凸轮，所述凸轮相对所述架体转动以推动所述从动轴朝远离所述驱动轴方向移动。
进一步的，所述凸轮上设置有供外部施力的旋钮。
进一步的，所述抵压组件包括在所述滑动槽内沿所述从动轴的轴线方向移动以推动所述从动轴朝远离所述驱动轴方向移动的插件。
进一步的，所述抵压组件包括与所述从动轴连接的导向件，所述导向件上设置有朝向所述驱动轴的第一斜面，所述插件上设置有与所述第一斜面配合的第二斜面。
进一步的，所述插件通过紧固件固定在所述架体上。
进一步的，所述滑动槽内形成有供插件沿所述从动轴的轴线方向移动的插接空间，所述插接空间一侧的槽壁上开设有供所述紧固件紧固连接的紧固孔。
进一步的，所述抵压组件包括折叠件，所述折叠件的一端安装在架体上，另一端与所述从动轴连接，所述折叠件折叠或者伸展以改变所述从动轴相对所述驱动轴之间的距离。
进一步的，所述抵压组件还包括用以抵持所述折叠件以使所述折叠件展开的压块。
进一步的，所述折叠件包括安装在架体上的第一片状体和与所述从动轴连接并与所述第一片状体铰接的第二片状体，所述压块抵持第一片状体和第二片状体。
进一步的，所述第一片状体与第二片状体之间设置有使所述第一片状体和第二片状体保持折弯状态的弹性元件，或者，所述第一片状体与架体之间设置有使所述第一片状体朝所述驱动轴方向翻转的弹性元件，或者，所述第二片状体与架体之间设置有使所述从动轴方向翻转的弹性元件。
进一步的，所述抵压组件包括弯折件，所述弯折件的一端安装在架体上，另一端与所述从动轴连接，所述弯折件弯折或者伸展以改变所述从动轴相对所述驱动轴之间的距离。
进一步的，所述抵压组件还包括用以抵持所述折叠件以使所述折叠件伸展的压块。
本发明的有益效果在于：本发明的园林工具通过在架体上设置张紧机构，由该张紧机构驱动从动轴朝远离驱动轴的方向移动以实现对履带张紧力的调节，从而防止履带脱落，而由于从动轴与架体之间通过摆杆连接，所以，对于张紧机构所需要施加在从动轴上的力要求更小，使得调节更为灵敏，有助于降低成本；另外，由于设置有该张紧机构，从而可以根据不同的地形调节履带的张紧力，以使该园林机构可适应各种复杂的工况，特别是在草地有沟及坡度的场合有很大的优势。
上述说明仅是本发明技术方案的概述，为了能够更清楚了解本发明的技术手段，并可依照说明书的内容予以实施，以下以本发明的较佳实施例并配合附图详细说明如后。
附图说明
图1为本发明实施例一中行走机构在第一状态时的状态图；
图2为图1所示的行走机构在第一状态时的剖视图；
图3为实施例一中行走机构在第二状态时的状态图；
图4为图1中的部分结构图；
图5为实施例一中张紧机构、摆杆及旋钮的组装图；
图6为本发明实施例二中行走机构在第一状态时的状态图；
图7为实施例二中插件插入一半时的状态图；
图8为实施例二中行走机构在第二状态时的状态图；
图9为实施例二中插件的结构示意图；
图10为本发明实施例三中行走机构在第一状态时的状态图；
图11为实施例三中行走机构实现快速更换履带时的中间状态图；
图12为实施例三的行走机构在第二状态时的状态图。
具体实施方式
下面结合附图和实施例，对本发明的具体实施方式作进一步详细描述。以下实施例用于说明本发明，但不用来限制本发明的范围。
园林工具包括架体、设置在架体下方以使该园林工具移动的行走机构、设置在架体上用以执行工作任务的工作机构及驱动工作机构运行的驱动机构。园林工具根据工作机构的不同可以命名为不同的名字，本实施例中，该工作机构为切割件，用以执行切割任务，主要是用于割草，故本实施例中，该园林工具为割草机。具体地，该割草机为智能割草机，该智能割草机上加载有智能控制系统以实现割草机可以根据规定的路线进行割草、自动回归到指定地点充电等工作，该控制系统可应用现有技术。该割草机中的驱动机构采用电机、减速机等常规部件形成，工作机构也采用现有技术，不再赘述。
本发明中的行走机构为两组，两组行走机构对称设置在机架的两侧，两组行走机构结构相同，下面以其中一组行走机构进行说明。请参见图1至图5，行走机构包括设置在架体1上的驱动轴2、设置在驱动轴2上的驱动轮3、设置在架体1上且相对驱动轴2平行设置的从动轴4、设置在从动轴4上的从动轮5、张紧在驱动轮3和从动轮5上的履带6、及设置在架体1上的张紧机构7。从动轴4活动安装在架体1上，在本实施例中，底座内侧板11上设置有摆杆9，从动轴4通过摆杆9活动安装在所述架体上，张紧机构7设置在从动轴4 一侧并在从动轴4上施加使从动轴4相对远离驱动轴2的力，见图3所示，张紧机构7所施加的力推动从动轴4远离驱动轴2的移动方向为图3中箭头d所指方向。驱动轮3通过轴承(未标号)安装在驱动轴2上，从动轮5通过轴承(未标号)安装在从动轴4上，架体1具有向下垂直的底座内侧板11，该底座内侧板11于园林工具的宽度方向上位于驱动轮3、从动轮5的内侧。该驱动轴2和从动轴4通过轴承(未标号)安装在该底座内侧板11上。通过在架体1上设置张紧机构7，由该张紧机构7驱动从动轴4朝远离驱动轴2的方向移动以实现对履带6张紧力的调节，从而防止履带6脱落，另外，由于设置有该张紧机构7，从而可以根据不同的地形调节履带6的张紧力，以使该割草机可适应各种复杂的工况，特别是在草地有沟及坡度的场合有很大的优势。
张紧机构7包括弹性件，具体为弹簧71。弹簧71设置在从动轴4靠近驱动轴2的一侧。该弹簧71的中轴线与该行走机构的中轴线重叠，在图1中，线条a表示行走机构的中轴线。由于弹簧71具有一定的弹性，所以，当履带6松弛时，弹簧71可以根据其弹性力将从动轴4朝远离驱动轴2的方向(图3中箭头d所指方向)推移，进而带动该从动轴4上的从动轮5朝远离驱动轮3的方向移动，以使履带6张紧，而当履带6在不平整面行走时，由于地面上的突起将压迫履带6以使履带6张紧，当其张紧力过大时，地面对履带6上所施加的力转移到从动轮5上，由于张紧机构7为弹簧71，其具有一定的压缩能力，所以，当从动轮5上被施加的力大于弹簧71的弹性力时，从动轴4将朝驱动轴2的方向移动(图1中箭头c的方向)以使弹簧71被压缩，从而释放履带6，防止履带6过渡张紧而造成疲劳损坏。
为了使弹簧71仅发生拉伸和压缩两种状态，而不发生弯折，该张紧机构7还包括第一桶状壳体72和第二桶状壳体73，第一桶状壳体72套设在第二桶状壳体73外，第一桶状壳体72和第二桶状壳体 73围设形成用以容置弹簧71的弹性腔74，第一桶状壳体72可沿第二桶状壳体73的延伸方向相对第二桶状壳体73移动，第一桶状壳体72、第二桶状壳体73其中之一抵持从动轴4，为了便于与从动轴4的配合，第一桶状壳体72、第二桶状壳体73其中之一具有抵持从动轮5的抵持部721，抵持部721上形成有用以容置从动轴4的收纳槽722。本实施例中，该第一桶状壳体72具有容置从动轴4的收纳槽722，详细的，第一桶状壳体72与从动轴4垂直设置，该收纳槽722的中轴线与从动轴4的中轴线平行，该从动轴4插入至收纳槽722内，详细地，该从动轴4具有用以安装从动轮5的配合杆部41和自配合杆部41向外延伸形成的配接端42，该配接端42插入至收纳槽722内，诚然，该从动轴4与收纳槽722之间的装配部位也可以设置在其他地方，如本实施例的方式设置的目的之一在于：便于装配，之二在于：使得整体结构更紧凑，在底座内侧板11上设置有沿从动轮5的径向延伸的滑动槽12，从动轴4的配接端42插入至滑动槽12内，如此设置可以限制从动轮5的移动方向，同时可将该张紧机构7设置在滑动槽12内。为了限制第一桶状壳体72、第二桶状壳体73相对位置，第一桶状壳体72、第二桶状壳体73之一上设置有滑移块75，第一桶状壳体72、第二桶状壳体73另一上设置有容置滑移块75的滑移槽76，滑移槽76具有相对设置且用以限制滑移块75的滑移距离的止档面751。滑移块75在滑移槽76上的滑移长度小于或等于弹性件的最大伸缩长度。
在本实施例中，该弹簧71为压簧，故弹簧71设置在从动轴4靠近驱动轴的一侧，诚然，在其他实施方式中，该弹簧也可以为拉簧，如此，可以将弹簧设置在从动轴4远离驱动轴的一侧，当需要张紧履带6时，弹簧由于其弹性力(此时为压缩力)使从动轴4朝远离驱动轴2的方向移动。
架体1上还设置有推动从动轴4相对驱动轴2移动以改变从动轴 4与驱动轴2之间的轴距的轴距调节机构。通过该轴距调节机构推动从动轴4快速地朝驱动轴2的方向移动(如图1中箭头c所指方向)以快速地使从动轴4与驱动轴2的轴距小于履带6处于张紧状态时的中心距，进而使履带6松弛，以拆卸旧履，而当套设新履带后，该轴距调节机构推动从动轴4快速地朝远离驱动轴2的方向移动(图3中箭头d所指方向)以快速地使从动轴4与驱动轴2的轴距达到履带6处于张紧状态时的中心距，实现快速地更换履带6。需要说明的是，在图1中从动轴4与驱动轴2之间的轴距x小于图3中从动轴4与驱动轴2之间的轴距y，轴距y大致为履带6处于张紧状态时的中心距。
具体的，轴距调节机构包括设置在底座内侧板11上以在从动轴4上施加推动力以使从动轴4朝驱动轴2方向移动(图1中箭头c所指方向)的弹力件(未图示)、及可在从动轴4上选择性地施加抵压力的抵压组件8，该抵压组件8推动从动轴4朝远离驱动轴2的方向移动(图3中箭头d所指方向)进而使履带6处于张紧状态(如图3所示)，该抵压力大于推动力，当抵压组件8在从动轴4上撤销抵压力，弹力件推动从动轴4朝驱动轴2方向移动进而使从动轴4与主动轴2的轴距小于履带6处于张紧状态时的中心距(如图1所示)。在此需要说明的是，张紧机构7夹持在抵压组件8与从动轴4之间，该张紧机构7中的弹簧71的弹性力小于抵压力和推动力，且张紧机构7中的弹簧71可实现的张紧调节为微调，弹簧71所实现的微调使从动轮5的移动距离均小于抵压力或推动力施加上从动轮5上后从动轮5的移动距离，故，当需要快速更换履带6时，张紧机构7施加在从动轮5上的力不会对从动轮5的移动距离造成影响。
弹力件的安装方式详细如下：摆杆9具有转动安装在底座内侧板11上的第一端91和与从动轴4接触以推动从动轴4移动的第二端92，弹力件设置在第一端91与底座内侧板11之间以在摆杆9上施加使摆杆9朝驱动轴2方向摆动的推动力。摆杆9的第一端91与底座内侧 板11、第二端92与从动轴4之间均通过摆杆轴93连接。在本实施例中，该弹力件为扭簧，其他实施方式中，该弹力件还可以根据所设置的位置选择拉簧或压簧。
在本实施例中，抵压组件8包括安装在底座内侧板11上的凸轮82，凸轮82相对底座内侧板11转动以推动从动轴4朝远离驱动轴方向移动。在本实施例中，该底座内侧板11上向外突伸形成有安装轴14，该安装轴14与从动轴4平行设置，凸轮82套设在该安装轴14上。凸轮82上设置有供外部施力的旋钮83，通过该旋钮83可以驱动该凸轮82转动以增大或去除推动力。凸轮82同样设置在滑动槽12内，凸轮82的外侧通过压板13封装以防止凸轮82从滑动槽12内移出，该旋钮83位于压板13的外侧。本实施例中，该凸轮82为1/4半径渐变式轮体结构。
请结合图3和图4，当履带6张紧在从动轮5和驱动轮3上，可称之为第二状态(图3所示状态)，见图3，在第二状态时，从动轴4与驱动轴2之间的轴距y大致为履带6处于张紧状态时的中心距，此时，凸轮82的最高点抵持张紧机构7以施加抵压力在张紧机构7上，由张紧机构7将该抵压力传递至从动轴4上，此时，从动轴4所在位置可称之为第二位置。请结合图1、图2和图3，该行走机构可实现快速更换履带6的具体工作方式如下：当旋钮83转动时，凸轮82转动，凸轮82的最高点逐渐远离张紧机构7，凸轮82施加在张紧机构7上的抵压力慢慢变小甚至趋向于0，此时，抵压力大于推动力，弹力件驱动使摆杆9以第一端91为中心点朝驱动轴方向摆动，这时，摆杆9带动从动轴4朝驱动轴2方向移动(图1中箭头c所示方向)，使得履带6不再张紧于从动轮5和驱动轮3之间(从动轴4与驱动轴2之间的轴距变小，且小于履带6处于张紧状态时的中心距，如图1中，从动轴4与驱动轴2之间的轴距变为x)，此时可称之为第一状态(图1所示状态)，从动轮4所在位置为第一位置，在此，可将从 动轴4与驱动轴2上的旧的履带6拆下，然后更换上新的履带6；当换上新的履带6后，再次转动旋钮83，凸轮82的最高点逐渐接近张紧机构7直至抵持张紧机构7，推动力由张紧机构7传递至从动轴4，从动轴4被张紧机构7推动以朝远离驱动轴2的方向移动(图3中箭头d所指方向)，从而从动轴4的位置发生变化，从动轴4从第一位置变为第二位置，新的履带6被张紧在从动轴4和驱动轴2上，以完成新、旧履带6的更换。
在此需要说明的时，将张紧机构7设置在从动轴4与凸轮82之间除了使整体结构更紧凑外，另一目的在于，张紧机构7中的弹簧71在履带6位于第一状态和第二状态时，减小刚性冲击。
除了采用上述抵压组件外，该抵压组件的结构还可以采用如图6至12的结构。
请参见图6至图8，抵压组件8’包括在滑动槽12内沿从动轴4的轴线方向(图6中箭头c所指方向)移动以推动从动轴4朝远离驱动轴方向移动的插件81’。详细地，插件81’通过紧固件82’固定在底座内侧板11上，从而防止插件81’从滑动槽12内沿从动轴4的轴线方向向外移动，以导致履带6安装不稳定，具体的，滑动槽内形成有供插件81’沿从动轴4的轴线方向移动的插接空间15’，插接空间15’一侧的槽壁(未标号)上开设有供紧固件82’紧固连接的紧固孔16’。在本实施例中，在更换履带6时，直接将插件81’拔出滑动槽12接口，但为了便于该插件81’插入至滑动槽12内，抵压组件8’还包括与从动轴4连接的导向件83’，导向件83’上设置有朝向驱动轴2的第一斜面831’(即可称之为导向面)，插件81’上设置有与第一斜面831’配合的第二斜面811’。
请结合图10至12，抵压组件包括折叠件81”和用以抵持折叠件81”以使折叠件81”展开的压块82”，折叠件81”的一端安装在底座内侧板11上，另一端与从动轴4连接，折叠件81”折叠或者伸展 以改变从动轴4相对驱动轴(未图示)之间的距离。折叠件81”包括安装在底座内侧板11上的第一片状体811”和与从动轴4连接并与第一片状体811”铰接的第二片状体812”，压块82”抵持第一片状体811”和第二片状体812”，本实施例中，第二片状体812”铰接在张紧机构7的第二桶状壳体73上。
为了使在压块82”撤离后，折叠件8”回复折叠状态，第一片状体811”与第二片状体812”之间设置有使第一片状体811”和第二片状体812”保持折弯状态的弹性元件，或者，第一片状体811”与底座内侧板11之间设置有使第一片状体811”朝驱动轴方向翻转的弹性元件，或者，第二片状体812”与底座内侧板11之间设置有使从动轴4方向翻转的弹性元件。
该遮挡件可以用弯折件代替，详细的，弯折件的一端安装在底座内侧板11上，另一端与从动轴4连接，弯折件弯折或者伸展以改变从动轴4相对驱动轴之间的距离。压块82”抵持折叠件81”以使折叠件81”伸展。该折弯件可以为弧形结构的弹片之类的结构。
以上实施例的各技术特征可以进行任意的组合，为使描述简洁，未对上述实施例中的各个技术特征所有可能的组合都进行描述，然而，只要这些技术特征的组合不存在矛盾，都应当认为是本说明书记载的范围。
以上实施例仅表达了本发明的几种实施方式，其描述较为具体和详细，但并不能因此而理解为对发明专利范围的限制。应当指出的是，对于本领域的普通技术人员来说，在不脱离本发明构思的前提下，还可以做出若干变形和改进，这些都属于本发明的保护范围。因此，本发明专利的保护范围应以所附权利要求为准。

Claims (18)

  1. 一种园林工具，包括架体、设置在所述架体下方以使该园林工具移动的行走机构、设置在架体上用以执行工作任务的工作机构及驱动所述工作机构运行的驱动机构，所述行走机构包括设置在所述架体上的驱动轴、设置在所述驱动轴上的驱动轮、设置在所述架体上且相对所述驱动轴平行设置的从动轴、设置在所述从动轴上的从动轮及张紧在所述驱动轮和从动轮上的履带，其特征在于，所述园林工具还包括设置在所述架体上的张紧机构和摆杆，所述从动轴通过摆杆活动安装在所述架体上，所述张紧机构设置在所述从动轴一侧并在所述从动轴上施加使所述从动轴相对远离所述驱动轴的力；所述张紧机构包括弹性件；所述张紧机构包括第一桶状壳体和第二桶状壳体，所述第一桶状壳体套设在所述第二桶状壳体外，所述第一桶状壳体和第二桶状壳体围设形成用以容置所述弹性件的弹性腔，所述第一桶状壳体可沿所述第二桶状壳体的延伸方向相对所述第二桶状壳体移动，所述第一桶状壳体、第二桶状壳体其中之一抵持所述从动轴；所述架体上设置有沿所述从动轮的径向延伸的滑动槽，所述从动轴部分插入至所述滑动槽内，所述架体上设置有推动所述从动轴朝相对所述驱动轴移动以改变从动轴与驱动轴之间的轴距的轴距调节机构；所述轴距调节机构包括设置在所述架体上以在所述从动轴上施加推动力以使从动轴朝驱动轴方向移动的弹力件、及可在所述从动轴上选择性地施加抵压力的抵压组件，所述抵压组件推动所述从动轴朝远离所述驱动轴的方向移动进而使所述履带处于张紧状态，所述抵压力大于推动力；当所述抵压组件在所述从动轴上撤销抵压力，所述弹力件推动所述从动轴朝驱动轴方向移动进而使所述从动轴与驱动轴的轴距小于所述履带处于张紧状态时的中心距；所述张紧机构设置在所述滑动槽内，所述张紧机构夹持在所述抵压组件与从动轴之间；所述抵压组件包括安装在所述架体上的凸轮，所述凸轮相对所述架体转动以推动所述从动轴朝远离所述驱动轴方向移动，所述凸轮上设置有供外部施力的旋钮。
  2. 如权利要求1所述的园林工具，其特征在于，所述第一桶状壳体、第二桶状壳体之一上设置有滑移块，所述第一桶状壳体、第二桶状壳体另一上设置有容置所述滑移块的滑移槽，所述滑移槽具有相对设置且用以限制所述滑移块 的滑移距离的止档面。
  3. 如权利要求2所述的园林工具，其特征在于，所述滑移块在滑移槽上的滑移长度小于或等于弹性件的最大伸缩长度。
  4. 如权利要求3所述的园林工具，其特征在于，所述第一桶状壳体、第二桶状壳体其中之一具有抵持所述从动轮的抵持部，所述抵持部上形成有用以容置所述从动轴的收纳槽。
  5. 如权利要求1所述的园林工具，其特征在于，所述摆杆具有转动安装在所述架体上的第一端和与所述从动轴接触以推动所述从动轴移动的第二端，所述弹力件设置在所述第一端与架体之间以在所述摆杆上施加使所述摆杆朝所述驱动轴方向摆动的推动力。
  6. 如权利要求5所述的园林工具，其特征在于，所述弹力件为扭簧。
  7. 如权利要求5所述的园林工具，其特征在于，所述摆杆的第一端与架体、第二端与从动轴之间均通过摆杆轴连接。
  8. 如权利要求1至7项中任一项所述的园林工具，其特征在于，所述抵压组件包括在所述滑动槽内沿所述从动轴的轴线方向移动以推动所述从动轴朝远离所述驱动轴方向移动的插件。
  9. 如权利要求8所述的园林工具，其特征在于，所述抵压组件包括与所述从动轴连接的导向件，所述导向件上设置有朝向所述驱动轴的第一斜面，所述插件上设置有与所述第一斜面配合的第二斜面。
  10. 如权利要求9所述的园林工具，其特征在于，所述插件通过紧固件固定在所述架体上。
  11. 如权利要求10所述的园林工具，其特征在于，所述滑动槽内形成有供插件沿所述从动轴的轴线方向移动的插接空间，所述插接空间一侧的槽壁上开设有供所述紧固件紧固连接的紧固孔。
  12. 如权利要求1至7项中任一项所述的园林工具，其特征在于，所述抵压组件包括折叠件，所述折叠件的一端安装在架体上，另一端与所述从动轴连接，所述折叠件折叠或者伸展以改变所述从动轴相对所述驱动轴之间的距离。
  13. 如权利要求12所述的园林工具，其特征在于，所述抵压组件还包括用以抵持所述折叠件以使所述折叠件展开的压块。
  14. 如权利要求13所述的园林工具，其特征在于，所述折叠件包括安装在架体上的第一片状体和与所述从动轴连接并与所述第一片状体铰接的第二片状体，所述压块抵持第一片状体和第二片状体。
  15. 如权利要求14所述的园林工具，其特征在于，所述第一片状体与第二片状体之间设置有使所述第一片状体和第二片状体保持折弯状态的弹性元件，或者，所述第一片状体与架体之间设置有使所述第一片状体朝所述驱动轴方向翻转的弹性元件，或者，所述第二片状体与架体之间设置有使所述从动轴方向翻转的弹性元件。
  16. 如权利要求1至7项中任一项所述的园林工具，其特征在于，所述抵压组件包括弯折件，所述弯折件的一端安装在架体上，另一端与所述从动轴连接，所述弯折件弯折或者伸展以改变所述从动轴相对所述驱动轴之间的距离。
  17. 如权利要求16所述的园林工具，其特征在于，所述抵压组件还包括用以抵持所述折叠件以使所述折叠件伸展的压块。
  18. 如权利要求1所述的园林工具，其特征在于，所述园林工具是智能割草机。
PCT/CN2020/114802 2019-09-11 2020-09-11 园林工具 WO2021047642A1 (zh)

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CN102015425A (zh) * 2008-05-05 2011-04-13 克拉克设备公司 模块化履带张紧系统
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