WO2023221889A1 - 电动调高装置及割草机 - Google Patents

电动调高装置及割草机 Download PDF

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Publication number
WO2023221889A1
WO2023221889A1 PCT/CN2023/093821 CN2023093821W WO2023221889A1 WO 2023221889 A1 WO2023221889 A1 WO 2023221889A1 CN 2023093821 W CN2023093821 W CN 2023093821W WO 2023221889 A1 WO2023221889 A1 WO 2023221889A1
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WO
WIPO (PCT)
Prior art keywords
cutting
electric
cutting frame
height
linear motion
Prior art date
Application number
PCT/CN2023/093821
Other languages
English (en)
French (fr)
Inventor
林宁斯艾瑞克
琼森亨利克
亚伯拉罕松奥斯卡
阿尔赞吉米
曹金
李汪浩
高杰
蒲志高
Original Assignee
格力博(江苏)股份有限公司
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 CN202221230443.6U external-priority patent/CN217936535U/zh
Priority claimed from CN202211239112.3A external-priority patent/CN117898103A/zh
Priority claimed from CN202222664470.0U external-priority patent/CN218244491U/zh
Priority claimed from CN202211237298.9A external-priority patent/CN117859499A/zh
Priority claimed from CN202222663165.XU external-priority patent/CN218244490U/zh
Application filed by 格力博(江苏)股份有限公司 filed Critical 格力博(江苏)股份有限公司
Publication of WO2023221889A1 publication Critical patent/WO2023221889A1/zh

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Classifications

    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters

Definitions

  • the invention belongs to the technical field of lawn mowers, and in particular relates to an electric height-adjusting device and a lawn mower.
  • a lawnmower is a mechanical tool used for mowing lawns, vegetation, etc., which can effectively improve the weeding efficiency of workers and reduce the labor intensity of workers.
  • different users have different requirements for lawn height. For this reason, lawn mowers that can adjust the mowing height have appeared on the market one after another, allowing users to freely select the mowing height and thereby control the height of the lawn after mowing.
  • the cutting height is The range is small (20 ⁇ 60mm) and requires manual adjustment; on the other hand, it is not conducive to long-distance height adjustment of the lawn mower.
  • the object of the present invention is to provide an electric height adjustment device and a lawn mower to solve the problem in the prior art that the height adjustment of the lawn mower requires manual adjustment.
  • the invention provides an electric height-adjusting device, which includes a support, a cutting frame, a driving component and a measuring structure.
  • the support is provided with a receiving cavity; the cutting frame is disposed in the receiving cavity of the support and is capable of reciprocating linear motion in a direction perpendicular to the working plane, and is used to carry the cutting prime mover.
  • the drive assembly includes an electric drive unit and a transmission structure; the electric drive unit is fixed on the support, and the transmission structure is connected to the cutting frame; the transmission structure converts the rotational motion of the electric drive unit For linear motion to drive the cutting frame to move linearly, the height of the cutting prime mover from the ground can be adjusted through the driving assembly.
  • the measuring structure is used to adjust the height of the induction cutting frame, and the measuring structure includes a signal triggering part and at least two first sensors.
  • the signal triggering part is provided with a plurality of hollow areas and a plurality of shielding areas, and each of the hollow areas and shielding areas is alternately distributed along the height direction, and the height direction is the lifting direction of the cutting frame.
  • the first sensors are used to sense the hollow area and the shielding area. Each of the first sensors is spaced apart along the height direction, and the signals collected by at least two of the first sensors have a phase difference.
  • the basic principle of the electric height-adjusting device is to convert the rotational motion of the electric drive unit into the linear motion of the cutting frame through the transmission structure. Since the cutting frame carries the cutting prime mover, by adjusting the height of the cutting frame from the ground, The height of the prime mover from the ground can be adjusted, and the height adjustment of the prime mover can be realized by relying on the driving assembly; the movement direction of the cutting frame is determined based on the positive and negative values of the phase difference between the two sensors through the measurement structure.
  • the invention also provides a lawn mower, which includes: a casing;
  • the electric height-adjusting device as mentioned above is installed on the casing and used to adjust the height of the cutting prime mover from the ground;
  • the cutting component is connected to the cutting prime mover and used to perform cutting operations
  • a control component used to control the operation of the electric height adjustment device.
  • the present invention has the following beneficial effects:
  • the rotational motion of the electric drive unit is converted into the linear motion of the cutting frame through the transmission structure, so that the height of the cutting frame from the ground can be adjusted, and the cutting frame is determined according to the positive and negative values of the phase difference between the two sensors through the measurement structure.
  • the height of the cutting prime mover can be adjusted by relying on the electric drive unit. There is no need for manual close-range operation to adjust the cutting height, which is convenient for improving the automation of the lawn mower and is also conducive to remote operation.
  • Figure 1 is a schematic diagram of the overall structure of an embodiment of the present invention.
  • Figure 2 is a schematic diagram 2 of the overall structure of an embodiment of the present invention.
  • Figure 3 is a cross-sectional view of the overall structure of the embodiment of the present invention.
  • Figure 4 is a partial structural schematic diagram of an embodiment of the present invention.
  • Figure 5 is a schematic diagram of the support structure according to the embodiment of the present invention.
  • Figure 6 is a schematic structural diagram of the cutting frame according to the embodiment of the present invention.
  • Figure 7 is a schematic structural diagram of a fixing clip according to an embodiment of the present invention.
  • Figure 8 is a schematic structural diagram of a shock-absorbing unit according to an embodiment of the present invention.
  • Figure 9 is a schematic diagram of the overall structure of an embodiment of the present invention.
  • Figure 10 is a cross-sectional view of the overall structure of the embodiment of the present invention.
  • Figure 11 is a schematic diagram of the support structure according to the embodiment of the present invention.
  • Figure 12 is a partially cutaway structural schematic diagram of the support according to the embodiment of the present invention.
  • Figure 13 is a schematic structural diagram of the driving assembly and cutting frame according to the embodiment of the present invention.
  • Figure 14 is an exploded schematic diagram of a linear moving component according to an embodiment of the present invention.
  • Figure 15 is an enlarged view of position I in Figure 14;
  • Figure 16 is a schematic structural diagram of a shock-absorbing unit according to another embodiment of the present invention.
  • Figure 17 is a schematic diagram of the stand structure according to the embodiment of the present invention.
  • Figure 18 is a schematic structural diagram of the support guard plate according to the embodiment of the present invention.
  • Figure 19 is a schematic diagram of the positional relationship between the signal trigger strip and the first sensor and the second sensor according to the embodiment of the present invention.
  • Figure 20 is a schematic diagram of the signals collected by the two first sensors in Figure 19 when the cutting frame is moving upward;
  • Figure 21 is a schematic diagram of the signals collected by the two first sensors in Figure 19 when the cutting frame is moving downward;
  • Figure 22 shows an isometric view of a lawn mower according to one embodiment of the present invention
  • Figure 23 shows a schematic diagram of the internal structure of a lawn mower according to one embodiment of the present invention.
  • Figure 24 shows a schematic structural diagram of an electric height adjustment device of a lawn mower according to one embodiment of the present invention.
  • Figure 25 shows an exploded schematic diagram of the electric height adjustment device of a lawn mower according to one embodiment of the present invention
  • Figure 26 shows a schematic structural diagram of the driven gear of a lawn mower in one embodiment of the present invention
  • Figure 27 is a cross-sectional view of an electric height adjustment device of a lawn mower according to an embodiment of the present invention.
  • the present invention provides an electric height-adjusting device, which includes:
  • the support 100 is provided with a receiving cavity 121;
  • the cutting frame 200 is arranged in the accommodation cavity 121 of the support 100 and is capable of reciprocating linear motion in a direction perpendicular to the working plane, and is used to carry the cutting prime mover 600;
  • the driving assembly 300 includes an electric driving unit 310 fixed on the support 100 and a transmission structure 330 connected to the cutting frame 200.
  • the transmission structure 330 converts the rotational motion of the electric driving unit 310 into the cutting frame 200. Linear motion, through which the driving assembly 300 can adjust the height of the cutting prime mover 600 above the ground;
  • the measurement structure includes a signal triggering part 270 and at least two first sensors 172.
  • the signal triggering part 270 is provided with a plurality of hollow areas 271 and a plurality of shields. area 272, each of the hollow areas 271 and the shielding area 272 is alternately distributed along the height direction, the first sensor 172 is used to sense the hollow area 271 and the shielding area 272, each of the first sensors 172 is along the The signals collected by at least two first sensors 172 are distributed at intervals in the height direction, which is the lifting direction of the cutting frame 200 .
  • the transmission structure 330 includes linear motion components 332 and 352 connected to the cutting frame 200 and with a movement direction perpendicular to the direction of the working plane, and a linear motion component 332 and 352 connected to the electric drive unit 310 between the rotating assembly 390, the electric drive unit 310 passes through the rotating assembly
  • the component is transmission connected with the linear motion components 332 and 352, and the rotation component converts the rotational motion of the electric drive unit 310 into the linear motion of the linear motion components 332 and 352 to drive the cutting frame 200 to linearly move;
  • the rotating assembly 390 includes a rotary movement component 331 connected to the electric drive unit 310.
  • the rotary movement component 331 is provided with a first tooth portion
  • the linear movement component 332 is provided with a third tooth portion. Two tooth parts, and the first tooth part and the second tooth part mesh with each other; the height of the cutting motor 600 from the ground can be adjusted through the driving assembly 300 .
  • the output end of the electric drive unit 310 is arranged horizontally. In other embodiments, the output end of the electric drive unit 310 can also be arranged vertically.
  • the electric drive unit 310 may be a drive motor.
  • the support 100 includes a base 110 , an accommodating cylinder 120 and a support ring 130 .
  • the accommodating cylinder 120 is disposed on the base 110
  • the accommodating cylinder 120 is disposed on the base 110 .
  • the body 120 and the base body 110 are connected through a support ring 130.
  • the support ring 130 is arranged on the base body 110 around the outside of the accommodation cylinder 120.
  • the height of the support ring 130 is lower than the height of the accommodation cylinder 120, and the support ring 130
  • a plurality of reinforcing ribs 140 are connected between the inner wall and the outer wall of the accommodation cylinder 120 along its circumferential direction. This structure ensures a firm connection between the accommodation cylinder 120 and the base 110 .
  • the accommodating cavity 121 is provided in the accommodating cylinder 120 , the cutting frame 200 and the transmission structure 330 are located in the accommodating cavity 121 , and the accommodating cavity 121 corresponds to the
  • the position of the rotating movement component 331 is provided with an outer protrusion 121a to provide a receiving space for the transmission structure 330.
  • the outer protrusion 121a is in contact with the outer wall of the support ring 130.
  • the outer protrusion 121a has a U-shaped cross section in the horizontal direction. .
  • a mounting bracket 150 is provided on the outer wall of the accommodation cylinder 120 , and the electric drive unit 310 is installed on the mounting bracket 150 .
  • the mounting bracket 150 is provided with a first positioning hole 151 for positioning the output end of the motor drive unit.
  • the cutting frame 200 has a cylindrical structure, the cutting frame 200 has a frame cavity 210 inside, and the cutting prime mover 600 is disposed on the machine. inside the rack cavity 210.
  • the frame cavity 210 has a small diameter section 212 and a large diameter section 211.
  • the large diameter section 211 is located in the small diameter section.
  • Above the section 212 the diameter of the small diameter section 212 matches the outer edge size of the cutting prime mover 600 to limit the cutting prime mover 600.
  • the cutting prime mover 600 is vertically installed in the cutting frame 200, and the cutting prime mover 600 has The output end extends out of the bottom of the cutting frame 200 . Moving the cutting frame 200 causes the cutting prime mover 600 to move synchronously with it, thereby realizing height adjustment of the cutting prime mover 600 .
  • a first mounting slot 220 is provided on the outer wall of the cutting frame 200, and the linear motion component 332 is clamped in the first mounting slot 220. And the top is fixed by the rack cover 250.
  • the linear movement component 332 moves linearly driven by the rotation movement component 331, it drives the cutting frame 200 fixed thereto to move together.
  • a detachable frame cover 250 is provided on the top of the cutting frame 200 .
  • the top of the cutting frame 200 has a plurality of screw holes 240 evenly distributed in the circumferential direction
  • the frame cover 250 is provided with a plurality of through holes corresponding to the circumferential direction.
  • Bolts are passed through the through holes and the screw holes 240 in sequence, so that The frame cover 250 is fixed on the cutting frame 200 to ensure firm connection and easy disassembly and assembly.
  • four bolts are provided to connect the frame cover 250 and the cutting frame 200 . By opening the frame cover 250, the cutting prime mover 600 can be removed or installed.
  • the direction of the rotation axis of the rotary movement component 331 and the movement direction of the linear movement component 332 are perpendicular to each other, and the movement direction of the linear movement component 332 is consistent with the movement direction of the cutting frame 200 .
  • the rotational motion is converted into linear motion, and the height adjustment of the cutting prime mover 600 can be realized by relying on the electric drive unit 310.
  • the rotary motion component 331 is a gear
  • the linear motion component 332 is a rack.
  • the bearing capacity is large, the transmission accuracy is high, the docking and continuation can be infinite, the power transmission is smooth and efficient, the cost is low and the space is saved, and the rotational motion can be effectively converted into linear motion.
  • This application connects the electric drive unit through a rotating component and a linear motion component to convert the rotational motion of the electric drive unit into linear motion.
  • the rotating component and linear motion component can select gear racks, worm gears, crankshafts, and eccentrics/cams as needed. , half tooth plus spring, internal tooth and other mechanisms.
  • This embodiment converts the rotational motion of the electric drive unit into linear motion through the structure of racks and gears.
  • the transmission structure 330 and the output end of the electric drive unit 310 are connected through a transmission shaft 321, and the transmission shaft 321 is arranged horizontally.
  • the electric drive unit 310 is a drive motor
  • the output shaft of the driving motor is connected to the transmission structure 330 through the transmission shaft 321.
  • One end of the transmission shaft 321 is connected to the output shaft of the driving motor through a key connection or a set screw.
  • the other end of the transmission shaft 321 extends into the inside of the support 100 to rotate with the The moving parts 331 are connected, and the rotating moving parts 331 are sleeved on the transmission shaft 321.
  • the electric height adjustment device further includes a fixing clip 160 disposed on the outer wall of the accommodation cavity 121 of the support 100, and the transmission shaft 321 passes through the fixing clip 160. and supported by it.
  • the fixing clip 160 is disposed on the outer protrusion 121a of the support 100 at a position corresponding to the transmission shaft 321.
  • the fixing clip 160 is clamped on the outer wall of the outer protrusion 121a for fixing and supporting the transmission shaft 321. Since the outer protruding portion 121a is U-shaped, the fixing clip 160 is also U-shaped.
  • the outer protruding portion 121a corresponds to the first limiting hole 121b on the side wall of the transmission shaft 321 for the limiting sleeve 322 to pass through.
  • a second limit hole 161 is provided on the opposite side wall of 160 for the limit sleeve 322 to pass through.
  • the second limit hole 161 matches the first limit hole 121b, and the connecting wall between the two opposite side walls is
  • a locking elastic piece 162 is provided.
  • the locking elastic piece 162 is arc-shaped, and one end of the locking elastic piece 162 is arranged in the elastic piece hole 163, and the other end is a free end, so that it can play a clamping role.
  • the end of the opposite side wall close to the support 100 is provided with a clamping foot 164.
  • the accommodation cavity 121 is provided with a clamping hole 121c for the clamping foot 164 to engage.
  • the clamping spring piece 162 cooperates with the clamping foot 164 to ensure that the fixing clip 160 It is clamped on the outer protrusion 121a of the support 100.
  • the rotating assembly 390 also includes a speed regulating mechanism 320.
  • the transmission structure 330 and the output end of the electric drive unit 310 are connected through a reversing speed regulating mechanism 320.
  • the reversing speed regulating mechanism 320 includes a first rotating component connected to the output end of the electric drive unit 310 and a second rotating component connected to the rotating motion component 331, and the first rotating component and the second rotating component In coordinated motion, the rotation axes of the first rotating component and the second rotating component are perpendicular to each other, and the rotating movement component 331 is coaxial with the rotating axis of the second rotating component.
  • This structure relies on the reversing speed regulating mechanism 320 to transmit the power of the electric drive unit 310 to the transmission structure 330 .
  • the reversing speed regulating mechanism 320 can, on the one hand, convert the direction of power transmission through the vertically arranged first rotating component and the second rotating component. On the other hand, it can play a role in adjusting the transmission speed.
  • the first rotating component is provided with a third tooth portion
  • the second rotating component is provided with a fourth tooth portion
  • the third tooth portion and the fourth tooth portion mesh with each other.
  • the meshing transmission of the third tooth part and the fourth tooth part can ensure smooth transmission.
  • the rotary motion component 331 and the second rotary component are connected through a transmission shaft 321, and the transmission shaft 321 is arranged horizontally.
  • the transmission shaft 321 is perpendicular to the output shaft of the electric drive unit 310.
  • the transmission shaft 321 is provided with a first limiting shoulder for axially limiting the second rotating component, and an axial limiting shoulder for the rotating moving component 331.
  • the second limiting shoulder of the rotary motion component 331 is provided with axial limiting sleeves 322 on both sides of the rotational movement component 331, and one of the limiting sleeves 322 abuts against the second limiting shoulder.
  • the transmission structure 330 is located in the support 100, and one end of the transmission shaft 321 connected to the rotational movement component 331 is passed through the support 100, and the transmission shaft 321 is connected to the support 100.
  • One end of the second rotating component is located outside the support 100 .
  • a fixing clip 160 is provided on the outer protruding portion 121a of the support 100 corresponding to the position of the transmission shaft 321.
  • the fixing clip 160 is U-shaped and is clamped on the outer wall of the outer protruding portion 121a for fixing and fixing. Support drive shaft 321.
  • the first rotating component is a worm cooperating with the electric drive unit 310
  • the second rotating component is a worm gear cooperating with the worm.
  • This structure is a multi-tooth meshing transmission, which can increase the speed or reduce the speed. The transmission is smooth, the noise is low, and a larger transmission ratio can be obtained.
  • the structure is self-locking and can achieve reverse self-locking, that is, it can only be driven by the worm
  • the worm gear cannot drive the worm gear, and its reverse self-locking property can play a role in safety protection.
  • the electric height adjustment device in order to dampen the linear motion of the cutting frame 200, the electric height adjustment device further includes a damping unit 400 disposed between the cutting frame 200 and the support 100, so The shock absorbing unit 400 is elastic. One side of the shock absorbing unit 400 is clamped on the outer wall of the cutting frame 200 , and the other side slides relative to the inner wall of the support 100 . By arranging the shock-absorbing unit 400, the shock-absorbing unit 400 reciprocates together with the cutting frame 200. The elastic force of the shock-absorbing unit 400 can ensure that the cutting frame 200 reciprocates smoothly during the reciprocating motion, thereby absorbing and absorbing shock. role.
  • the electric height adjustment device in order to guide the linear motion of the cutting frame 200, the electric height adjustment device further includes a guide structure disposed between the cutting frame 200 and the support 100.
  • the guide structure may be a guide rail part 122 and a guide groove part 421 that cooperate with each other.
  • a guide rail portion 122 is provided on the inner wall of the support 100 along the movement direction of the cutting frame 200, and a guide groove portion 421 is provided on the shock absorbing unit 400 to cooperate with the guide rail portion 122.
  • the guide rail portion 122 and The size of the guide groove portion 421 is adapted to guide the guide groove portion 421 of the shock absorbing unit 400 to slide along the guide rail portion 122 .
  • the guide groove part 421 can provide guidance and support for the reciprocating motion of the cutting machine frame 200.
  • the shapes of the guide rail portion 122 and the guide groove portion 421 are not specifically limited, as long as the guide groove portion 421 can be locked on the guide rail portion 122 and slide.
  • the length of the guide rail portion 122 is greater than the length of the guide groove portion 421 .
  • the shock absorption units 400 are provided in multiple numbers and arranged along the circumferential direction of the cutting frame 200 .
  • five of the shock absorbing units 400 are arranged along the circumferential direction of the cutting frame 200 .
  • Three are arranged corresponding to the opposite sides of the transmission structure 330 , and two are symmetrically arranged close to the transmission structure 330 .
  • a plurality of second mounting grooves 230 are provided on the outer wall of the cutting frame 200, and the second mounting grooves 230 and the first mounting grooves 220 parallel.
  • a plurality of second installation slots 230 are arranged at the same height. The number of the second installation slots 230 corresponds to the number of the shock-absorbing units 400.
  • One shock-absorbing unit 400 is clamped in each second installation slot 230, and the top is fixed by the rack cover 250. .
  • the cutting frame 200 moves linearly, it drives the shock absorbing unit 400 fixed thereto to move together.
  • the shock absorbing unit 400 is in the shape of an arch bridge, including a body part 410 and two symmetrically arranged arch parts 420. One end of each arch part 420 is connected to the body.
  • the guide groove portion 421 is provided at the other end of the portion 410 .
  • the main body portion 410 is fixedly connected to the cutting machine frame 200 , and the guide groove portion 421 is slidingly connected to the support 100 .
  • This structure not only utilizes the elasticity of the damping unit 400 to achieve the damping effect, but also utilizes the guide groove portion 421 to slide and cooperate with the guide rail portion 122 provided on the support 100 to achieve the guiding effect.
  • a guide wheel (not shown in the figure) can be installed on the guide groove portion 421.
  • the guide wheel is rotatably connected to the guide groove portion 421 and can rotate around its own axis.
  • the guide wheel is slidably matched with the guide rail portion 122 provided on the support 100 to achieve a guiding function. In this way, friction during sliding guidance between the damping unit 400 and the support 100 can be reduced.
  • a sealing shield 500 is connected between the cutting machine frame 200 and the bottom of the support 100.
  • the sealing shield 500 is provided with a plurality of connected folding sections. The cutting machine When the frame 200 makes a reciprocating linear motion, the sealing shield 500 expands or contracts. A bottom hole of the shield is provided at the bottom of the sealing shield 500 for the output end of the cutting motor 600 to protrude.
  • the sealing shield 500 functions to protect the cutting frame 200 from dust and water.
  • the outer dimensions of the end connected to the bottom of the support 100 of the sealing shield 500 are larger than the outer dimensions of the end connected to the bottom of the cutting machine frame, and the sealing shield 500 is in the shape of a truncated cone.
  • the sealing shield 500 is connected to the bottom of the support 100 through a fixed ring 510.
  • the fixed ring 510 is provided with a plurality of mounting holes 511 in the circumferential direction.
  • the base body 110 of the support 100 is provided with a plurality of mounting column cavities 111 correspondingly.
  • the cavity 111 is connected to the outer wall of the support ring 130 through reinforcing ribs 140 to enhance the strength of the mounting column cavity 111 .
  • Use bolts to pass through the mounting holes 511 and place them in the mounting column cavity 111 to connect and fix the sealing shield 500 with the bottom of the support 100 .
  • the invention also provides a lawn mower, including the above-mentioned electric height adjustment device.
  • the lawn mower includes:
  • the electric height-adjusting device is installed on the casing and used to adjust the height of the cutting prime mover 600 from the ground;
  • the cutting assembly is connected to the cutting prime mover 600 and is used to perform cutting operations;
  • a control component used to control the operation of the electric height-adjusting device
  • the electric height adjustment device includes:
  • the support 100 is provided with a receiving cavity 121;
  • the cutting frame 200 is arranged in the accommodation cavity 121 of the support 100 and is capable of reciprocating linear motion in a direction perpendicular to the working plane, and is used to carry the cutting prime mover 600;
  • the driving assembly 300 includes an electric driving unit 310 fixed on the support 100 and a cutting
  • the transmission structure 330 is connected to the frame 200.
  • the transmission structure 330 converts the rotational motion of the electric drive unit 310 into the linear motion of the cutting frame 200.
  • the transmission structure 330 includes a rotational motion component 331 connected to the electric drive unit 310 and
  • the linear motion part 332 is fixed to the cutting frame 200.
  • the rotary motion part 331 is provided with a first tooth part
  • the linear motion part 332 is provided with a second tooth part
  • the first tooth part and the second tooth part are The teeth mesh with each other; the height of the cutting motor 600 from the ground can be adjusted through the drive assembly 300 .
  • the walking assembly includes moving wheels, and there are at least three moving wheels installed on the casing to facilitate the walking of the lawn mower, and the walking assembly also includes a drive wheel.
  • the motor that moves the wheel.
  • the cutting assembly includes a cutting disk and a plurality of cutting blades installed on the cutting disk.
  • the cutting blades are evenly distributed along the circumference of the cutting disk.
  • the cutting prime mover 600 drives the cutting assembly to move to realize the cutting operation. Since the output end of the cutting prime mover 600 is connected to the cutting assembly, by adjusting the height of the cutting frame 200 through the electric height adjustment device, the height of the cutting prime mover 600 from the ground can be adjusted, thereby adjusting the height of the cutting assembly from the ground.
  • the operation of the electric height adjustment device is controlled through the control component to adjust different cutting heights.
  • the control component controls the action of the electric drive unit 310 through the electronic control system, the height of the cutting prime mover 600 from the ground can be adjusted. This can be achieved through remote control or through the electronic control panel that comes with the device.
  • the rotational motion of the electric drive unit 310 is converted into the linear motion of the cutting frame 200 through the transmission structure 330, so that the cutting frame 200 can be adjusted.
  • the height of the cutting prime mover 600 can be adjusted by relying on the electric drive unit 310. There is no need for manual close-range operation to adjust the cutting height, which is convenient for improving the automation of the lawn mower and is also conducive to remote operation.
  • the present invention provides an electric height adjustment device, including:
  • the support 100 is provided with a receiving cavity 121;
  • the cutting frame 200 is arranged in the accommodation cavity 121 of the support 100 and is capable of reciprocating linear motion in a direction perpendicular to the working plane, and is used to carry the cutting prime mover 600;
  • the driving assembly 300 includes an electric driving unit 310 fixed on the support 100, a second transmission structure 350 connected to the cutting machine frame 200, and a coupling between the electric driving unit 310 and the second transmission structure 350.
  • the first transmission structure 340 includes a matching worm 341 and a worm gear 342.
  • the worm 341 is connected to the output end of the electric drive unit 310, and the worm gear 342 is connected to the third Two transmission structures 350 are connected, and the second transmission structure 350 is used to convert the rotational motion of the worm gear 342 into a linear motion of the cutting frame 200 in a direction perpendicular to the working plane; the driving assembly 300 can adjust all The height of the cutting motor 600 above the ground.
  • the rotating assembly 390 includes a transmission rod 351, a worm gear 342 and a worm 341.
  • the worm 341 is connected to the output end of the electric drive unit 310, and the worm gear 342 is connected to the first end of the transmission rod 351.
  • the second end of the transmission rod 351 is connected to the linear motion component 352, the linear motion component 352 is used to convert the rotational motion of the worm gear 342 into a vertical motion of the cutting frame 200 perpendicular to the working plane. direction of linear motion.
  • the second transmission structure 350 includes a transmission rod 351 connected to the worm gear 342 and a linear motion component 352 fixed on the cutting frame 200.
  • the linear motion component 352 is provided with a screw hole 3522a, and the transmission rod 351 is inserted into the screw hole 3522a and threadably cooperates with the screw hole 3522a.
  • the electric drive unit 310 may be a drive motor.
  • the worm gear 342 is coaxially sleeved on the transmission rod 351, and the rotation axes of the transmission rod 351 and the worm gear 342 are along the vertical direction, and the rotation axis of the worm 341 along the horizontal direction.
  • the support 100 is provided with a stand 700 , and the electric drive unit 310 and the worm 341 are both provided on the support 100 .
  • One end of the transmission rod 351 is connected to the support 100 , and the other end of the transmission rod 351 is connected to the stand 700 .
  • the worm gear 342 is located below the linear motion component 352 .
  • the height of the center of gravity of the electric drive unit 310 and the first transmission structure 340 is closer to the support 100, which is beneficial to lowering the center of gravity of the entire height adjustment structure, and is also beneficial to stable lawn mowing operations.
  • the support 100 includes a seat Body 110 and accommodating cylinder 120, the cutting frame 200 is arranged in the accommodating cylinder 120, and the accommodating cylinder 120 includes an upper cylinder 120a and a lower cylinder 120b, the upper cylinder 120a is located on the base Above the base body 110, the lower cylinder 120b is located below the base body 110.
  • the center of gravity of the support in this structure is lower, which is conducive to more stable lawn mowing operations.
  • the stand 700 includes a bottom plate 710 provided on the support 100 , a top plate 730 provided above the bottom plate 710 , and a connection between the bottom plate 710 and the top plate 730 .
  • the connecting arc plate 720 between the bottom plate 710 is in a semi-ring shape
  • the top plate 730 is provided with a bearing seat 740
  • the upper end of the transmission rod 351 is positioned in the bearing seat 740 through the first bearing. After the lower end of the rod 351 penetrates the bottom plate 710, it is positioned on the support 100 through the second bearing.
  • the stand 700 also includes a protective annular plate 750, which is disposed on the connecting arc plate 720; and the protective annular plate 750 is located above the bottom plate 710. , and is located below the top plate 730 , so that the protective ring plate 750 , the bottom plate 710 and the connecting arc plate 720 together form a protective space for protecting the worm gear 342 .
  • the stand 700 further includes reinforcing ribs, which can enhance the mechanical properties of the stand 700 .
  • the linear motion component 352 includes a mounting base 3521 fixedly connected to the cutting frame 200 and a screw sleeve 3522 removably provided on the mounting base 3521.
  • the inner hole of the screw sleeve 3522 is the screw hole 3522a.
  • the mounting base 3521 is provided with a positioning hole 3522d, the screw sleeve 3522 is disposed in the positioning hole 3522d, and the outer wall of the screw sleeve 3522 is in contact with the positioning hole 3522d.
  • the inner walls of the positioning hole 3522d are matched by an anti-rotation structure, which limits the rotation of the screw sleeve 3522 relative to the mounting base 3521.
  • the cross-sectional profile of the anti-rotation structure is hexagonal, that is The positioning hole 3522d has a hexagonal cross-section, and the threaded sleeve 3522 has a hexagonal cross-section profile matching the positioning hole 3522d.
  • the cross-section of the anti-rotation structure can also be other numbers of polygons; of course, the cross-sectional profile of the screw sleeve and the cross-section of the positioning hole can also be circular.
  • the screw sleeve and the positioning hole can use an interference fit, or a key or other connecting piece can be provided between the screw sleeve and the positioning hole.
  • both ends of the threaded sleeve 3522 are respectively provided with first limits for limiting the axial position of the threaded sleeve 3522 relative to the mounting base 3521.
  • Part 3522b and a second limiting part 3523 the first limiting part 3522b is against the outside of the first end of the mounting base 3521, and the second limiting part 3523 is against the outside of the second end of the mounting base 3521.
  • the first end is the upper end of the mounting base 3521
  • the second end is the lower end of the mounting base 3521.
  • the first limiting component 3522b is an outer flange provided on the threaded sleeve 3522
  • the second limiting component 3523 is detachably provided on the threaded sleeve.
  • the second limiting component 3523 (such as a retaining spring) is detachably engaged in the slot 3522c of the threaded sleeve 3522.
  • a shock absorbing element (not shown) is provided between the inner wall of the positioning hole 3522d and the outer wall of the thread sleeve 3522.
  • the shock-absorbing element can be a rubber sleeve, which is placed outside the threaded sleeve 3522 and matches the internal contour of the positioning hole 3522d;
  • the damping element can be a plurality of rubber pieces, and the threaded sleeve
  • 3522 has a polygonal cross-sectional profile
  • the rubber sheet is bonded to each outer wall of the screw sleeve 3522 in one-to-one correspondence.
  • the screw sleeve (3522) is installed in the positioning hole 3522d, the rubber sheet is located between the inner wall of the positioning hole 3522d and between the outer walls of the threaded sleeve 3522.
  • the electric height adjustment device further includes a shock absorbing unit 400 disposed between the cutting frame 200 and the support 100 .
  • the vibration unit 400 is stuck on the support 100 and can slide relative to the outer wall of the cutting machine frame 200 .
  • the shock-absorbing unit 400 By arranging the shock-absorbing unit 400 on the support 100, the cutting frame 200 makes a reciprocating linear motion relative to the shock-absorbing unit 400.
  • the elastic force of the shock-absorbing unit 400 can ensure the movement process of the cutting frame 200 during the reciprocating motion. Smooth and can play the role of shock absorption.
  • a plurality of positioning grooves 124 are formed on the cavity wall of the accommodation cavity 121 , and the shock absorbing unit 400 is disposed in the positioning grooves 124 .
  • the positioning groove 124 is a strip groove.
  • the shock absorbing unit 400 is a strip spring leaf. At least one arch 420 is provided in the direction.
  • the support 100 includes a base 110 and a receiving cylinder 120 , and the cutting frame 200 is disposed in the receiving cylinder 120 .
  • One end of the shock absorbing unit 400 is bent to form a first hook part 430, and the other end of the shock absorbing unit 400 is bent to form a second hook part 440.
  • the first hook part 430 is hooked on the accommodation cylinder 120
  • the second hook portion 440 is hooked on the edge of the other end of the accommodation cylinder 120 .
  • the shock absorbing unit 400 can be positioned on the support 100 without additional parts.
  • the length direction of the positioning groove 124 is substantially parallel to the axial direction of the accommodation cylinder 120 , so that the length direction of the damping unit 400 is substantially consistent with the axial direction of the accommodation cylinder 120 , so that The resistance of the cutting frame 200 to linear movement relative to the shock absorbing unit 400 is small.
  • the positioning groove 124 can also be an annular groove or an arc-shaped groove provided on the wall of the accommodation cavity; when the positioning groove 124 is an annular groove, the shock absorbing unit correspondingly adopts an annular elastic piece, and the annular elastic piece moves along the circumferential direction.
  • the direction includes a plurality of arched parts, and the vault area of each arched part is in contact with the outer wall of the cutting frame 200; when the positioning groove 124 is an arc-shaped groove, the long edge of the arc-shaped groove is along the circumferential direction of the accommodation cylinder 120 , the shock-absorbing unit corresponds to an arc-shaped spring piece corresponding to the arc-shaped groove.
  • the arc-shaped spring piece also includes at least one arched portion along the circumferential direction, and the dome area of the arched portion is in contact with the cutting machine.
  • the outer wall of the frame 200 is in contact.
  • the shock absorbing units 400 are provided in plurality and are arranged at intervals along the circumference of the cutting frame 200 .
  • three damping units 400 are arranged along the circumferential direction of the cutting frame 200 .
  • the electric height adjustment device also includes a measurement structure for sensing the height adjustment of the cutting frame 200.
  • the measurement structure includes a signal trigger part 270 and at least two first sensors 172,
  • the signal triggering part 270 is provided with a plurality of hollow areas 271 and a plurality of shielding areas 272.
  • the hollow areas 271 and the shielding areas 272 are alternately distributed along the height direction.
  • the first sensor 172 is used to sense the hollow areas. 271 and the shielding area 272, each of the first sensors 172 is spaced apart along the height direction, and the signals collected by at least two of the first sensors 172 have a phase difference.
  • the height direction is the cutting frame 200 lifting direction.
  • the signal waveforms acquired by the two first sensors are essentially the same, but the phases between the two are different.
  • the movement direction of the cutting frame can be determined based on the positive and negative values of the phase difference between the two sensors.
  • this measurement structure can jointly determine the movement direction of the cutting machine frame 200 through the signals collected by each first sensor.
  • the method of using at least two first sensors to collect signals can achieve a denoising effect and achieve higher measurement accuracy. high.
  • h is one hollow area 271 and one
  • nh+1/4h the height data obtained by the two sensors has an error of up to 1/4h.
  • the first sensor in the upper view direction in FIG. 19 is defined as Sensor a and the lower first sensor 172 are defined as sensor b.
  • Sensor a and sensor b When the cutting frame 200 moves upward, the signal waveforms collected by sensor a and sensor b are shown in Figure 20.
  • sensor a and sensor b collect See Figure 21 for the signal waveform diagram.
  • the cutting frame 200 includes a frame body 260, and the signal triggering part 270 is provided on the frame body 260 and can be triggered at any time.
  • the cutting frame 200 moves linearly; each of the first sensors 172 is disposed on the support 100 .
  • the first sensor 172 and the second sensor 171 are through-beam photoelectric sensors.
  • the support 100 is provided with a sensor bracket 170 , and both the signal transmitter and the signal receiver are arranged on the sensor bracket 170 .
  • an escape groove 123 is provided on the inner wall of the accommodation cavity 121 , and the signal triggering part 270 is disposed in the escape groove 123 .
  • the support 100 is provided with a second sensor 171 for sensing the height adjustment limit position.
  • the height adjustment limit position usually includes the highest limit position and the lowest limit position.
  • the upper limit position and the highest limit position can be a change position of hollowing out and blocking, and the changing position avoids the above-mentioned hollow area 271 and blocking area. 272, for example, refer to Figure 19, the space between the highest limit position and the lowest limit position is hollow, but the top of the highest limit position and the bottom of the lowest bottom line position are not hollow.
  • a sealing shield 500 is connected between the cutting frame 200 and the bottom of the support 100.
  • the sealing shield 500 is provided with a plurality of connected When the cutting frame 200 makes a reciprocating linear motion, the sealing shield 500 expands or contracts.
  • the bottom of the sealing shield 500 is provided with a shield bottom hole for the output end of the cutting prime mover 600 to protrude.
  • the sealing shield 500 plays a role in protecting the cutting frame 200 from dust and water.
  • the sealing shield 500 can not only be installed along the vertical Extending and contracting in the straight direction (the direction of movement of the cutting frame), the sealing shield 500 can also play a shock-absorbing role in the horizontal direction.
  • the bottom of the support 100 is provided with a support shield 800 for carrying the support 100
  • the sealing shield 500 is provided on the support shield 800 between the bottom and the cutting frame 200.
  • the support shield 800 and the sealing shield 500 can It can block splashed soil, water droplets and other impurities, and plays a protective role on the support 100, the cutting frame 200, and the driving assembly 300.
  • the support guard 800 is provided with a through hole 801, and the lower cylinder 120b passes through the through hole 801.
  • the outer dimensions of the end connected to the bottom of the support shield 800 of the sealing shield 500 are larger than the outer dimensions of the end connected to the bottom of the cutting machine frame 200 , and the sealing shield 500 Round cone shape.
  • the upper end of the sealing shield 500 is pressed against the bottom surface of the support guard 800 through a fixing ring 900, and the lower end of the sealing shield 500 is connected to the cutting frame 200
  • the fixing ring 900 is installed on the bottom of the support guard plate 800 through bolts.
  • An embodiment of the present invention also provides a lawn mower, including:
  • the electric height-adjusting device is installed on the casing and used to adjust the height of the cutting prime mover 600 from the ground;
  • the cutting assembly is connected to the cutting prime mover 600 and is used to perform cutting operations;
  • Walking assembly located at the bottom of the casing
  • a control component used to control the operation of the electric height-adjusting device
  • the electric height adjustment device includes:
  • Electric height adjustment device including:
  • the support 100 is provided with a receiving cavity 121;
  • the cutting frame 200 is arranged in the accommodation cavity 121 of the support 100 and is capable of reciprocating linear motion in a direction perpendicular to the working plane, and is used to carry the cutting prime mover 600;
  • the driving assembly 300 includes an electric driving unit 310 fixed on the support 100, a second transmission structure 350 connected to the cutting machine frame 200, and a coupling between the electric driving unit 310 and the second transmission structure 350.
  • the first transmission structure 340 includes a matching worm 341 and a worm gear 342.
  • the worm 341 is connected to the output end of the electric drive unit 310, and the worm gear 342 is connected to the third Two transmission structures 350 are connected, and the second transmission structure 350 is used to convert the rotational motion of the worm gear 342 into a linear motion of the cutting frame 200 in a direction perpendicular to the working plane. Movement; the height above the ground of the cutting prime mover 600 can be adjusted through the driving assembly 300 .
  • the walking assembly includes moving wheels, and there are at least three moving wheels installed on the casing to facilitate the walking of the lawn mower, and the walking assembly also includes a drive wheel.
  • the motor that moves the wheel.
  • the cutting assembly includes a cutting disk and a plurality of cutting blades installed on the cutting disk.
  • the cutting blades are evenly distributed along the circumference of the cutting disk.
  • the cutting prime mover 600 drives the cutting assembly to move to realize the cutting operation. Since the output end of the cutting prime mover 600 is connected to the cutting assembly, by adjusting the height of the cutting frame 200 through the electric height adjustment device, the height of the cutting prime mover 600 from the ground can be adjusted, thereby adjusting the height of the cutting assembly from the ground.
  • the operation of the electric height adjustment device is controlled through the control component to adjust different cutting heights.
  • the control component controls the action of the electric drive unit 310 through the electronic control system, the height of the cutting prime mover 600 from the ground can be adjusted. This can be achieved through remote control or through the electronic control panel that comes with the device.
  • the rotational power of the electric drive unit 310 is converted into the linear motion of the cutting frame 200 through the first transmission structure 340 and the second transmission structure 350. Therefore, the height of the cutting frame 200 from the ground can be adjusted, and the height of the cutting prime mover 600 can be adjusted by controlling the electric drive unit 310. There is no need for manual close-range operation to adjust the cutting height, which is convenient for improving the automation of the lawn mower and is also conducive to implementation. Remote operation.
  • the present invention provides a lawn mower for maintaining and trimming lawns, vegetation, etc.
  • the cutting height of the lawn mower provided by the invention can be adjusted.
  • the technical solution provided by this application is not only applicable to electric lawn mowers, but also to other lawn mowers such as step lawn mowers, push lawn mowers, riding lawn mowers, or gasoline powered lawn mowers. Engine-driven, solar-driven and other power-driven lawn mowers.
  • the lawn mower includes a casing 1, a cutting device (not labeled in the figure), an electric height adjustment device 2 and a walking device 3.
  • the cutting device is at least partially installed inside the casing 1, and it and its components extend outside the casing 1, and the cutting device is raised and lowered relative to the casing 1; the electric height-adjusting device 2 is installed in the casing 1 for adjustment.
  • the cutting height of the cutting device, and the casing A sliding channel 21 is formed in 1, and the cutting device is connected up and down in the sliding channel 21; the walking device 3 is arranged at the bottom of the casing 1 to realize the overall movement of the lawn mower during operation.
  • the casing 1 includes a base 11 and a cover 12 that is movable relative to the base 11, and a cavity is formed on the base 11, which can be used to install a lawn mower.
  • the casing also includes a support, which is used to install an electric height adjustment device, wherein the base 11 and the support 100 are each provided with an opening (not marked in the figure) at the position corresponding to the cutting device, and This opening communicates with the sliding channel 21 in the electric height-adjusting device 2.
  • the cutting device can slide in the sliding channel 21, and the cutting device at least partially extends to the outside of the base in the direction away from the cover 12, so that the cutting device can The device can cut lawns, vegetation, etc.
  • the sliding channel 21 is parallel to the axial direction of the cutting device, that is, the height adjustment direction is parallel to the axial direction of the cutting device.
  • the walking device 3 is installed on the base 11 to facilitate the movement of the lawn mower.
  • the walking device 3 includes two driving wheels and two driven wheels. There is a space between the two driving wheels. It is connected through a rotating shaft.
  • the driving wheel can be connected to the motor or engine through the rotating shaft, so that the driving wheel has driving force; in addition, the driven wheel can be a universal wheel to realize the adjustment of the moving direction; the driving wheel and The specific structure of the driven wheel belongs to the prior art and will not be described again here.
  • the cutting device includes a power machine and a cutting blade.
  • the power machine is installed on the cutting frame 200 in the electric height-adjusting device 2, and as the cutting frame 200 moves up and down along the sliding channel 21, it should be noted that the power machine can be an electric motor, a gasoline engine, or other power mechanisms.
  • the power machine is an electric motor; in addition, the output shaft of the power machine passes through the cutting frame 200 and the base 11 in sequence, and is located outside the base 11; the cutting blade is coaxially fixed with the end of the output shaft of the power machine facing the ground, And there is a certain angle with the output shaft of the power machine to realize the mowing operation of the lawn mower.
  • the electric height-adjusting device 2 includes a cutting frame 200 and a transmission assembly 370 .
  • the transmission assembly 370 includes an electric drive unit 310 and a transmission structure 330 .
  • the transmission structure 330 includes a linear motion component 332 and a rotation component 390 .
  • the linear motion component 332 includes a screw rod 372 fixedly connected to the cutting frame.
  • the rotating component 390 includes a threaded tube 371, a driving gear 373 and a driven gear 374.
  • the driving gear The wheel 373 is coaxially fixed to the output shaft of the electric drive unit 310.
  • the driven gear 374 is coaxially sleeved on the outside of the threaded tube 371 and connected to the threaded tube 371.
  • the outside of the screw rod 372 The threads engage with the internal threads of the threaded tube 371 .
  • the threaded tube 371 is driven to rotate by the electric drive unit 310 and drives the linear motion component 332 to move linearly.
  • the support 100 is installed on the base 11 and is located in the cavity formed on the base 11, and the support 100 can be used to install the electric drive unit 310, the transmission assembly 370 and the cutting frame 200.
  • the cutting frame 200 is slidingly connected to the support 100, and the electric drive unit 310 is transmission connected to the cutting frame 200 through the transmission assembly 370, so that the cutting frame 200 can be lifted and lowered back and forth.
  • the top of the support 100 is provided with an opening, and the bottom of the support 100 is provided with a through hole (not labeled in the figure) for the output shaft of the power machine to pass through.
  • the sliding channel 21 is formed inside the support 100; the cutting frame 200 is slidingly connected in the sliding channel 21. Further, the cutting frame 200 is arranged in a hollow cylindrical shape, and the inner hollow is used to install the cutting motor and pass through the wire harness connected to the cutting motor; the cutting frame 200 is also integrally formed with a first ear plate 221 and a second ear plate.
  • the first ear plate 221 is located on the side wall at the top of the cutting frame 200
  • the second ear plate 222 is located on the side wall at the bottom of the cutting frame 200
  • the first ear plate 221 and the second ear plate 222 are The center is located on the same straight line, and the space between the first ear plate 221 and the second ear plate 222 is used to install the screw rod 372 in the transmission assembly 370 .
  • a mounting slot 223 is provided on the outer wall of the cutting frame 200.
  • a guide mechanism (not shown in the figure) or a shock-absorbing mechanism (not shown in the figure) can be installed in the installation slot 223.
  • the guide mechanism and the shock-absorbing mechanism can be installed along the The groove 223 relatively slides in the length direction to realize the height adjustment guide of the cutting frame 200.
  • the shock-absorbing mechanism uses the principle of elastic buffering to reduce the vibrations generated by the lawn mower during the movement of the cutting frame 200.
  • the guide mechanism or shock absorbing mechanism corresponds to the mounting slots 223 one by one; in some embodiments of the present invention, in embodiments, the shock absorbing mechanism and the guiding mechanism may be made of metal materials, such as aluminum profiles.
  • the electric drive unit 310 is fixed on the support 100 and is located between the support 100 and the cutting frame 200; the transmission assembly 370 connects the electric drive unit 310 and The cutting frames 200 are connected in a transmission manner, and the rotational motion of the output shaft of the electric drive unit 310 is converted into linear motion of the cutting frame 200 .
  • the transmission assembly 370 includes a threaded tube 371, a screw rod 372, a driving gear 373 and a driven gear 374.
  • the driving gear 373 is coaxially fixed with the output shaft of the electric drive unit 310 , and the driving gear 373 meshes with the driven gear 374 .
  • the number of teeth of the driven gear 374 is greater than the number of teeth of the driving gear 373 .
  • the driven gear 374 is a hollow cylinder, and the outer wall of the driven gear 374 is formed with teeth that mesh with the driving gear 373 .
  • the driven gear 374 is coaxially sleeved on the outside of the threaded tube 371
  • the threaded pipe 371 is connected to the driven gear 374 through a rib 375, and the rib 375 is located between the threaded pipe 371 and the driven gear 374, and multiple ribs 375 are provided at intervals along the circumferential direction of the threaded pipe 371.
  • 375 can increase the connection strength between the threaded pipe 371 and the driven gear 374, and using this connection method, compared with directly inserting the threaded pipe 371 on the driven gear 374, the driven gear 374 and the threaded pipe 371 can be reduced
  • the overall weight of the lawn mower reduces the overall weight of the lawn mower.
  • internal threads may also be directly provided inside the driven gear 374 , and the internal threads may mesh with the external threads of the lead screw 372 .
  • One end of the screw rod 372 is fixed to the first ear plate 221, and the other end passes through the second ear plate 222 and extends outward. It should be noted that the height of the cutting frame 200 The adjustment range is limited by the portion of the screw rod 372 within the first ear plate 221 and the second ear plate 222. The specific height adjustment range can be adjusted according to the actual use of the lawn mower.
  • the screw rod 372 is threadedly connected to the threaded pipe 371.
  • the connection method is that the external thread of the screw rod 372 meshes with the internal thread of the threaded pipe 371. It should be noted that the screw rod 372 cannot rotate.
  • the cutting frame is realized by the rotation of the threaded pipe 371. 200 reciprocating lifts.
  • a fixed slot (not shown in the figure) is formed on the bottom wall of the support 100 corresponding to the threaded pipe 371.
  • One end of the threaded pipe 371 is embedded in the fixed slot, and the threaded pipe 371 can rotate in the fixed slot.
  • the transmission efficiency can be improved, the momentum loss during the transmission process can be reduced, and the impact on the electric drive unit can be reduced. power consumption, thereby reducing the overall cost of use of the lawn mower.
  • the electric drive When the unit 310 is started, the output shaft of the electric drive unit 310 drives the driving gear 373 to rotate. The rotation of the driving gear 373 drives the driven gear 374 to rotate, thereby driving the threaded tube 371 fixed to the driven gear 374 to rotate. Since the screw rod 372 cannot rotate, , the screw rod 372 realizes reciprocating lifting and lowering under the transmission of the threaded pipe 371, thereby causing the cutting frame 200 to reciprocate lifting and lowering, and the reciprocating lifting and lowering of the cutting frame 200 realizes the adjustment of the height of the cutting blade from the ground.
  • the present invention can improve the transmission efficiency and reduce the momentum during the transmission process. losses, reducing the power consumption of the electric drive unit, thereby reducing the overall cost of use of the lawn mower. Therefore, the present invention effectively overcomes various shortcomings in the prior art and has high industrial utilization value.

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Abstract

本发明属于割草机技术领域，涉及一种电动调高装置及割草机，电动调高装置包括支座，设置有容纳腔；切割机架，设置于容纳腔内并沿垂直于作业平面方向作往复线性运动，用于承载切割原动机；驱动组件，包括固定在支座上的电驱动单元以及与切割机架连接的传动结构，传动结构将电驱动单元的旋转运动转换为切割机架的线性运动，通过驱动组件能够调节切割原动机的离地高度；测量结构，包括至少两个第一传感器，用于感应镂空区和遮挡区，至少两个第一传感器采集的信号具有相位差。

Description

电动调高装置及割草机 技术领域
本发明属于割草机技术领域，特别是涉及一种电动调高装置及割草机。
背景技术
割草机是一种用于修剪草坪、植被等的机械工具，可以有效提升作业工人的除草效率，降低作业工人的劳动强度。然而，不同的用户对草坪高度的要求不尽相同。为此，市场上陆续出现了可以调节割草高度的割草机，以让用户可以自由选择割草高度，从而控制草坪修剪后的高度。
然而，现有的割草机大多采用人工手动调节其割草高度，通过用户旋转割草机上的调高旋钮，调高旋纽经由齿轮副实现切割电机的线性运动，此种方式一方面切割高度范围小(20～60mm)，并且需要人工去调整；另一方面，不利于实现割草机的远距离调高操作。
发明内容
有鉴于此，本发明的目的在于提供一种电动调高装置及割草机，用于解决现有技术中割草机调节高度需要依靠人工手动调节的问题。
本发明提供了一种电动调高装置，包括支座、切割机架、驱动组件和测量结构。所述支座，设置有容纳腔；所述切割机架，设置于所述支座的容纳腔内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机。所述驱动组件，包括电驱动单元和传动结构；所述电驱动单元固定在所述支座上，所述传动结构与所述切割机架连接；所述传动结构将电驱动单元的旋转运动转换为线性运动以带动切割机架线性运动，通过所述驱动组件能够调节所述切割原动机的离地高度。测量结构用于感应切割机架调节高度的，所述测量结构包括 信号触发部和至少两个第一传感器。所述信号触发部上设置有多个镂空区和多个遮挡区，各所述镂空区和遮挡区沿高度方向交替分布，所述高度方向为所述切割机架的升降方向。所述第一传感器用于感应所述镂空区和所述遮挡区，各所述第一传感器沿所述高度方向间隔分布，至少两个所述第一传感器采集的信号具有相位差。
所述电动调高装置的基本原理是：通过传动结构将电驱动单元的旋转运动转换为切割机架的线性运动，由于切割机架承载切割原动机，从而通过调节切割机架的离地高度，即可调节原动机的离地高度，实现了依靠驱动组件实施对原动机的高度调节；通过测量结构根据两个传感器之间的相位差的正负值确定切割机架的运动方向。
本发明还提供了一种割草机，所述割草机包括：机壳；
如上所述的电动调高装置，安装在机壳上，用于调节切割原动机的离地高度；
切割组件，与切割原动机连接，用于执行切割作业；
行走组件，位于机壳底部；和
控制组件，用于控制所述电动调高装置作业。
如上所述，本发明具有以下有益效果：
通过传动结构将电驱动单元的旋转运动转换为切割机架的线性运动，从而能够调整切割机架的离地高度，通过测量结构根据两个传感器之间的相位差的正负值确定切割机架的运动方向，依靠电驱动单元即可实现切割原动机的高度调节，无需人工近距离操作调整切割高度，便于提高割草机的自动化，同时也利于实现远程操作。
附图说明
图1为本发明实施例的整体结构示意图一；
图2为本发明实施例的整体结构示意图二；
图3为本发明实施例的整体结构剖视图；
图4为本发明实施例的部分结构示意图；
图5为本发明实施例的支座结构示意图；
图6为本发明实施例的切割机架结构示意图；
图7为本发明实施例的固定夹结构示意图；
图8为本发明实施例的减震单元结构示意图；
图9为本发明实施例的整体结构示意图；
图10为本发明实施例的整体结构剖视图；
图11为本发明实施例的支座结构示意图；
图12为本发明实施例的支座部分剖开后的结构示意图；
图13为本发明实施例的驱动组件和切割机架的结构示意图；
图14为本发明实施例的线性运动部件爆炸示意图；
图15为图14中Ⅰ处放大视图；
图16为本发明另一实施例的减震单元结构示意图；
图17为本发明实施例的立座结构示意图；
图18为本发明实施例的支撑护板结构示意图。
图19为本发明实施例的信号触发条与第一传感器、第二传感器的位置关系示意图；
图20为切割机架上行时，图19中两个第一传感器采集的信号示意图；
图21为切割机架下行时，图19中两个第一传感器采集的信号示意图；
图22显示为本发明一种割草机于一实施例的轴测图；
图23显示为本发明一种割草机于一实施例的内部结构示意图；
图24显示为本发明一种割草机于一实施例中电动调高装置的结构示意图；
图25显示为本发明一种割草机于一实施例中电动调高装置的爆炸示意图；
图26显示为本发明一种割草机于一实施例中从动齿轮的结构示意图；
图27显示为本发明一种割草机于一实施例中电动调高装置的剖视图。
零件标号说明
1-机壳；11-底座；12-盖体；2-电动调高装置；3-行走装置；
100-支座；110-座体；111-安装柱腔；120-容置筒体；121-容纳腔；121a-外凸
部；121b-第一限位孔；121c-卡位孔；122-导轨部；130-支撑环；140-加强肋；150-安装支架；151-第一定位孔；160-固定夹；161-第二限位孔；162-卡位弹片；163-弹片孔；164-卡脚；123-避让槽；124-定位槽；120a-上部筒体；120b-下部筒体；170-传感器支架、172-第一传感器、171-第二传感器；
200-切割机架；210-机架腔；211-大径段；212-小径段；220-第一安装槽；230-
第二安装槽；240-螺孔；250-机架盖；260-机架本体；270-信号触发部；271-镂空区、272-遮挡区；21-滑移通道；221-第一耳板；222-第二耳板；223-安装槽；
300-驱动组件；310-电驱动单元；320-换向调速机构；321-传动轴；322-限位
轴套；330-传动结构；331-旋转运动部件；332-线性运动部件；340-第一传动结构；341-蜗杆；342-蜗轮；350-第二传动结构；351-传动杆；352-线性运动部件；3521-安装座；3522-螺套；3522a-螺孔；3522b-第一限位部件，3522c-卡槽，3522d-定位孔；3523-第二限位部件；360-调高电机；370-传动组件；371-螺纹管；372-丝杆；373-主动齿轮；374-从动齿轮；375-筋板；390-转动组件；
400-减震单元；410-本体部；420-拱起部；421-导槽部；430-第一钩部；440-第
二钩部；
500-密封护罩；510-固定环；511-安装孔；
600-切割原动机；
700-立座、710-底板、720-连接弧板、730-顶板、740-轴承座、750-防护环形
板；
800-支撑护板、801-通孔；
900-固定环。
具体实施方式
以下由特定的具体实施例说明本发明的实施方式，熟悉此技术的人士可由本说明书所揭露的内容轻易地了解本发明的其他优点及功效。
须知，本说明书所附图式所绘示的结构、比例、大小等，均仅用以配合说明书所揭示的内容，以供熟悉此技术的人士了解与阅读，并非用以限定本发明可实施的限定条件，故不具技术上的实质意义，任何结构的修饰、比例关系的改变或大小的调整，在不影响本发明所能产生的功效及所能达成的目的下，均应仍落在本发明所揭示的技术内容得能涵盖的范围内。同时，本说明书中所引用的如“上”、“下”、“左”、“右”、“中间”及“一”等的用语，亦仅为便于叙述的明了，而非用以限定本发明可实施的范围，其相对关系的改变或调整，在无实质变更技术内容下，当亦视为本发明可实施的范畴。
请结合图1至图4、图19所示，本发明提供一种电动调高装置，包括：
支座100，设置有容纳腔121；
切割机架200，设置于所述支座100的容纳腔121内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机600；
驱动组件300，包括固定在所述支座100上的电驱动单元310以及与切割机架200连接的传动结构330，所述传动结构330将电驱动单元310的旋转运动转换为切割机架200的线性运动，通过所述驱动组件300能够调节所述切割原动机600的离地高度；以及
用于感应切割机架(200)调节高度的测量结构，该测量结构包括信号触发部270和至少两个第一传感器172，所述信号触发部270上设置有多个镂空区271和多个遮挡区272，各所述镂空区271和遮挡区272沿高度方向交替分布，所述第一传感器172用于感应所述镂空区271和所述遮挡区272，各所述第一传感器172沿所述高度方向间隔分布，至少两个所述第一传感器172采集的信号具有相位差，所述高度方向为所述切割机架200的升降方向。
如图1-图4，所述传动结构330包括与切割机架200连接且运动方向垂直于作业平面方向的线性运动部件332、352以及连接在线性运动部件332、352与所述电驱动单元310之间的转动组件390，所述电驱动单元310通过转动组 件与所述线性运动部件332、352传动连接，所述转动组件将电驱动单元310的旋转运动转换为线性运动部件332、352的线性运动以带动切割机架200线性运动；
在本发明一些实施例中，所述转动组件390包括与电驱动单元310连接的旋转运动部件331，所述旋转运动部件331上设置有第一齿部，所述线性运动部件332上设置有第二齿部，且所述第一齿部与第二齿部相互啮合；通过所述驱动组件300能够调节所述切割原动机600的离地高度。
在本发明一些实施例中，所述电驱动单元310的输出端水平设置。在其他实施例中，所述电驱动单元310的输出端还可以垂直设置。所述电驱动单元310具体可以为驱动电机。
参阅图5所示，在本发明一些实施例中，所述支座100包括座体110、容置筒体120和支撑环130，容置筒体120设置于座体110上，且容置筒体120与座体110之间通过支撑环130连接，支撑环130围绕容置筒体120外部设置于座体110上，支撑环130的高度低于容置筒体120的高度，且支撑环130内壁与容置筒体120外壁之间沿其周向连接有多个加强肋140。此种结构，保证容置筒体120与座体110之间连接牢固。
在本发明一些实施例中，所述容纳腔121设置于容置筒体120内，所述切割机架200和传动结构330位于所述容纳腔121内，且所述容纳腔121对应于安装有旋转运动部件331的位置设置有外凸部121a，以便给传动结构330提供容纳空间，外凸部121a与支撑环130的外壁贴合，所述外凸部121a在水平方向的横截面呈U形。
在本发明一些实施例中，所述容置筒体120的外壁上设置有安装支架150，所述电驱动单元310安装在所述安装支架150上。所述安装支架150上设置有用于定位电机驱动单元输出端的第一定位孔151。
参阅图3、图6所示，在本发明一些实施例中，所述切割机架200呈柱形结构，所述切割机架200内部具有机架腔210，所述切割原动机600设置于机架腔210内。机架腔210具有小径段212和大径段211，大径段211位于小径 段212的上方，小径段212的直径与切割原动机600的外缘尺寸匹配，以对切割原动机600限位，切割原动机600竖直设置在切割机架200内，且切割原动机600的输出端伸出所述切割机架200底部。移动切割机架200，即使切割原动机600随其同步移动，从而实现切割原动机600的高度调节。
在本发明一些实施例中，为了安装所述线性运动部件332，所述切割机架200的外壁上设置有第一安装槽220，所述线性运动部件332卡设于第一安装槽220中，且顶端由机架盖250固定。线性运动部件332在旋转运动部件331驱动下发生线性运动时，带动与其固连的切割机架200一同运动。
在本发明一些实施例中，所述切割机架200顶部设置有可拆卸的机架盖250。具体的，所述切割机架200的顶部沿周向均布有多个螺孔240，机架盖250上沿周向对应设置有多个通孔，通过螺栓依次穿过通孔和螺孔240，使机架盖250固定在切割机架200上，保证连接牢固，且拆装便捷。本实施例中，设置有4个螺栓以连接机架盖250和切割机架200。打开机架盖250，可拆除或安装切割原动机600。
所述旋转运动部件331的旋转轴线方向与线性运动部件332的运动方向相互垂直，且线性运动部件332的运动方向与切割机架200的运动方向一致。通过传动结构330，将旋转运动转换为直线运动，依靠电驱动单元310即可实现切割原动机600的高度调节。
在本发明一些实施例中，所述旋转运动部件331为齿轮，所述线性运动部件332为齿条。采用此结构，承载力大，传动精度高，可无限长度对接延续，动力传递平稳高效，成本低廉且节省空间，能够有效地将旋转运动转变为线性运动。本申请通过转动组件以及线性运动组件与电驱动单元连接，将电驱动单元的旋转运动转换为直线运动，转动组件以及线性运动组件可以根据需要选择齿轮齿条、涡轮蜗杆、曲轴、偏心轮/凸轮、半齿加弹簧、内齿等机构。本实施例通过齿条以及齿轮的结构将电驱动单元的旋转运动转换为直线运动。
可选的，所述传动结构330与电驱动单元310的输出端之间通过传动轴321连接，所述传动轴321水平设置。具体的，电驱动单元310为驱动电机， 驱动电机的输出轴与传动结构330通过传动轴321连接，传动轴321的一端与驱动电机的输出轴通过键连接或者紧定螺钉连接，传动轴321的另一端伸入支座100内部以与旋转运动部件331连接，旋转运动部件331套设在传动轴321上，具体可通过旋转运动部件331与传动轴321之间的扁方结构径向限位，且在旋转运动部件331的两侧设置有轴向限位的限位轴套322，限位轴套322套设在传动轴321上。
参阅图7，在本发明一些实施例中，所述电动调高装置还包括设置于所述支座100的容纳腔121外壁上的固定夹160，所述传动轴321穿过所述固定夹160并由其支撑。具体的，所述固定夹160设置于支座100的外凸部121a上对应于传动轴321的位置，固定夹160卡设在外凸部121a的外壁上，用于固定和支撑传动轴321。由于外凸部121a呈U形，固定夹160也呈U形，外凸部121a对应于传动轴321的侧壁上开设有供限位轴套322穿设的第一限位孔121b，固定夹160的相对侧壁上开设有供限位轴套322穿设的第二限位孔161，第二限位孔161与第一限位孔121b匹配，且两相对侧壁之间的连接壁上设置有卡位弹片162，卡位弹片162呈弧形，且卡位弹片162的一端设置在弹片孔163中，另一端为自由端，从而可以起到夹紧作用。相对侧壁靠近支座100的一端设置有卡脚164，容纳腔121上设置有供卡脚164卡接的卡位孔121c，通过卡位弹片162与卡脚164的配合，以保证固定夹160卡紧在支座100的外凸部121a上。
可选的，所述转动组件390还包括调速机构320，所述传动结构330与电驱动单元310的输出端之间通过换向调速机构320连接。具体的，所述换向调速机构320包括与电驱动单元310输出端连接的第一旋转部件和与旋转运动部件331连接的第二旋转部件，且所述第一旋转部件与第二旋转部件配合运动，所述第一旋转部件与第二旋转部件的旋转轴线相互垂直，所述旋转运动部件331与第二旋转部件的旋转轴线同轴。此种结构，依靠换向调速机构320，将电驱动单元310的动力传递给传动结构330。换向调速机构320通过呈垂直设置的第一旋转部件和第二旋转部件，一方面可起到转换传递动力方向的作用， 另一方面可以起到调节传输速度的作用。
在本发明一些实施例中，所述第一旋转部件上设置有第三齿部，所述第二旋转部件上设置有第四齿部，且所述第三齿部与第四齿部相互啮合。第三齿部与第四齿部的啮合传动，可以保障传动平稳。
在本发明一些实施例中，所述旋转运动部件331与第二旋转部件之间通过传动轴321连接，所述传动轴321水平设置。具体的，所述传动轴321与电驱动单元310的输出轴垂直，传动轴321上设置有对第二旋转部件轴向限位的第一限位轴肩，以及对旋转运动部件331轴向限位的第二限位轴肩，旋转运动部件331的两侧设置有轴向限位的限位轴套322，其中一个限位轴套322抵靠在第二限位轴肩上。
在本发明一些实施例中，所述传动结构330位于所述支座100内，所述传动轴321与旋转运动部件331连接的一端穿设在所述支座100上，所述传动轴321与第二旋转部件连接的一端位于所述支座100外。并且，所述支座100的外凸部121a上对应于传动轴321的位置设置有固定夹160，固定夹160呈U形，固定夹160卡设在外凸部121a的外壁上，用于固定和支撑传动轴321。
在本发明一些实施例中，所述第一旋转部件为与所述电驱动单元310配合的蜗杆，所述第二旋转部件为与所述蜗杆配合的蜗轮。此种结构为多齿啮合传动，增速减速均可，传动平稳、噪音小，可以得到较大的传动比，且该结构具有自锁性，可实现反向自锁，即只能由蜗杆带动蜗轮，而不能由蜗轮带动蜗杆，其反向自锁性可起安全保护作用。
在本发明一些实施例中，为了对切割机架200的线性运动进行减震，所述电动调高装置还包括设置于所述切割机架200与支座100之间的减震单元400，所述减震单元400具有弹性，所述减震单元400的一侧卡设于所述切割机架200外壁上，另一侧相对于所述支座100内壁滑动。通过设置减震单元400，减震单元400随切割机架200一同往复运动，借由减震单元400的弹力，能够保证切割机架200做往复运动时的运动过程平稳，可起到吸收减震的作用。
在本发明一些实施例中，为了对切割机架200的线性运动进行导向，所述电动调高装置还包括设置于所述切割机架200与支座100之间的导向结构。导向结构可以为相互配合的导轨部122和导槽部421。其中，所述支座100的内壁上沿切割机架200的运动方向设置有导轨部122，所述减震单元400上设置有与所述导轨部122配合的导槽部421，导轨部122与导槽部421的尺寸相适配，以引导所述减震单元400的导槽部421沿所述导轨部122滑动。通过导槽部421卡设在导轨部122上，可为切割机架200的往复运动提供导向和支撑。本发明中，对导轨部122和导槽部421的形状不作具体限定，只要能实现导槽部421卡设在导轨部122上滑动即可。在一些实施例中，导轨部122的长度大于导槽部421的长度。
在本发明一些实施例中，为了保证减震和导向的均衡性，所述减震单元400设置为多个，并沿所述切割机架200的周向布置。本实施例中，所述减震单元400沿着切割机架200的周向布置5个。对应于传动结构330的相对侧布置有3个，靠近传动结构330对称布置有2个。
在本发明一些实施例中，为了安装所述减震单元400，所述切割机架200的外壁上设置有多个第二安装槽230，且所述第二安装槽230与第一安装槽220平行。多个第二安装槽230等高设置，第二安装槽230与减震单元400的数量对应，每个第二安装槽230中卡设有一个减震单元400，且顶端由机架盖250固定。切割机架200作线性运动时，带动与其固连的减震单元400一同运动。
参阅图8，在本发明一些实施例中，所述减震单元400呈拱桥形，包括本体部410和对称设置的两个拱起部420，每个所述拱起部420的一端连接于本体部410上，另一端设置有所述导槽部421，所述本体部410与所述切割机架200固定连接，所述导槽部421与所述支座100滑动连接。此种结构，不仅利用了减震单元400自身弹性实现减震作用，同时可利用导槽部421与支座100上设置的导轨部122滑动配合实现导向作用。
并且，可以理解的，所述导槽部421上可安装导轮(图中未示出)，所述 导轮转动地连接于导槽部421上，并能够绕自身轴线转动。所述导轮与支座100上设置的导轨部122滑动配合，实现导向作用。如此，能够减少减震单元400与支座100之间滑动导向时的摩擦。
在本发明一些实施例中，所述切割机架200与支座100的底部之间连接有密封护罩500，所述密封护罩500上设置有多个相连接的折叠段，所述切割机架200作往复线性运动时，所述密封护罩500伸展或收缩。密封护罩500底部开设有供切割原动机600的输出端伸出的护罩底孔，密封护罩500起到对切割机架200的防尘防水保护作用。
在本发明一些实施例中，所述密封护罩500与支座100底部连接的一端外部尺寸大于与切割机机架底部连接的一端外部尺寸，且密封护罩500呈圆台形。密封护罩500通过固定环510与支座100底部连接，固定环510上沿周向设置有多个安装孔511，支座100的座体110上对应设置有多个安装柱腔111，安装柱腔111与支撑环130的外壁之间通过加强肋140连接，以增强安装柱腔111的强度。采用螺栓穿过安装孔511并置于安装柱腔111中，使密封护罩500与支座100底部连接固定。
本发明还提供了一种割草机，包括上述电动调高装置。在一些实施例中，割草机包括：
机壳；
电动调高装置，安装在机壳上，用于调节切割原动机600的离地高度；
切割组件，与切割原动机600连接，用于执行切割作业；
行走组件，位于机壳底部；和
控制组件，用于控制所述电动调高装置作业；
其中，所述电动调高装置包括：
支座100，设置有容纳腔121；
切割机架200，设置于所述支座100的容纳腔121内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机600；
驱动组件300，包括固定在所述支座100上的电驱动单元310以及与切割 机架200连接的传动结构330，所述传动结构330将电驱动单元310的旋转运动转换为切割机架200的线性运动，所述传动结构330包括与电驱动单元310连接的旋转运动部件331和与切割机架200固定的线性运动部件332，所述旋转运动部件331上设置有第一齿部，所述线性运动部件332上设置有第二齿部，且所述第一齿部与第二齿部相互啮合；通过所述驱动组件300能够调节所述切割原动机600的离地高度。
在本发明一些实施例中，所述行走组件包括移动轮，所述移动轮至少设置三个，并安装在所述机壳上，以便于割草机行走，并且，行走组件还包括用于驱动移动轮转动的电机。
在本发明一些实施例中，所述切割组件包括切割盘和安装在切割盘上的多个切割刀片，切割刀片沿切割盘的周向均布，通过切割原动机600驱动切割组件运动，实现切割作业。由于切割原动机600的输出端连接切割组件，通过电动调高装置调整切割机架200的高度，即可调整切割原动机600的离地高度，从而实现对切割组件离地高度的调节。
根据用户的不同需求，通过控制组件控制电动调高装置作业，以调节不同的切割高度。其中，通过电控系统控制电驱动单元310动作，即可实现切割原动机600的离地高度调节。具体可依靠远程控制来实现，也可以通过设备自带的电控面板来实现。
综上，在本发明实施例提供的电动调高装置及割草机中，通过传动结构330将电驱动单元310的旋转运动转换为切割机架200的线性运动，从而能够调整切割机架200的离地高度，依靠电驱动单元310即可实现切割原动机600的高度调节，无需人工近距离操作调整切割高度，便于提高割草机的自动化，同时也利于实现远程操作。
请结合参见图9至图11和图13，本发明提供一种电动调高装置，包括：
支座100，设置有容纳腔121；
切割机架200，设置于所述支座100的容纳腔121内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机600；
驱动组件300，包括固定在所述支座100上的电驱动单元310、与所述切割机架200连接的第二传动结构350以及连接在所述电驱动单元310与所述第二传动结构350之间的第一传动结构340，所述第一传动结构340包括相配合的蜗杆341和蜗轮342，所述蜗杆341与所述电驱动单元310的输出端连接，所述蜗轮342与所述第二传动结构350连接，所述第二传动结构350用于将所述蜗轮342的旋转运动转换为所述切割机架200沿垂直于作业平面方向的线性运动；通过所述驱动组件300能够调节所述切割原动机600的离地高度。本实施例中，所述转动组件390包括传动杆351、蜗轮342和蜗杆341，所述蜗杆341与所述电驱动单元310的输出端连接，所述蜗轮342与所述传动杆351的第一端连接，所述传动杆351的第二端与所述线性运动部件352连接，所述线性运动部件352用于将所述蜗轮342的旋转运动转换为所述切割机架200沿垂直于作业平面方向的线性运动。
参阅图13和图14，在本发明的一些实施例中，所述第二传动结构350包括与所述蜗轮342连接的传动杆351和固定在所述切割机架200上的线性运动部件352，所述线性运动部件352上设置有螺孔3522a，所述传动杆351穿设在所述螺孔3522a内，并与所述螺孔3522a螺纹配合。所述电驱动单元310具体可以为驱动电机。
参阅图13，在本发明一些实施例中，所述蜗轮342同轴套设于所述传动杆351上，且传动杆351和蜗轮342的旋转轴线沿竖直方向，所述蜗杆341的旋转轴线沿水平方向。
结合参阅图9、图13，在本发明一些实施例中，所述支座100上设置有立座700，所述电驱动单元310、所述蜗杆341均设置在所述支座100上，所述传动杆351的一端与所述支座100连接，所述传动杆351的另一端与所述立座700连接，所述蜗轮342处于所述线性运动部件352的下方。此种结构中，电驱动单元310和第一传动结构340的重心高度更接近支座100，有利于降低整个高度调节结构的重心，也就有利于稳定的进行割草作业。
结合参阅图10和图12，在本发明的一些实施例中，所述支座100包括座 体110和容置筒体120，所述切割机架200设置于所述容置筒体120内，而容置筒体120包括上部筒体120a和下部筒体120b，上部筒体120a处于座体110的上方，下部筒体120b处于座体110的下方。相较直接将整个容置筒体120设置于支座110上方的方式，此种结构的支座重心更低，有利于更稳定的进行割草作业。
结合参阅图9、图17，在本发明的一些实施例中，所述立座700包括设置在支座100上的底板710、设置在底板710上方的顶板730和连接在底板710和顶板730之间的连接弧板720，所述底板710呈半环型，所述顶板730上设置有轴承座740，所述传动杆351的上端通过第一轴承定位在所述轴承座740内，所述传动杆351的下端贯穿底板710后，通过第二轴承定位在所述支座100上。
可选的，参阅图17，所述立座700还包括防护环形板750，所述防护环形板750设置在所述连接弧板720上；且所述防护环形板750处于所述底板710的上方，并处于所述顶板730的下方，使所述防护环板750、所述底板710和所述连接弧板720共同围成保护所述蜗轮342的防护空间。图17中，所述立座700还包括加强筋，该加强筋可以增强立座700的力学性能。
参阅图14所示，在本发明一些实施例中，所述线性运动部件352包括与所述切割机架200固定连接的安装座3521和可拆卸的设置在所述安装座3521上的螺套3522，所述螺套3522的内孔为所述螺孔3522a。采用此种结构时，若螺套3522的螺孔3522a过度磨损，可以直接更换螺套3522，而无需更换整个线性运动部件352，更无须更换与线性运动部件352连接的切割机架200，有利于减少维护成本。
参阅图14所示，在本发明一些实施例中，所述安装座3521上设置有定位孔3522d，所述螺套3522设置在所述定位孔3522d内，所述螺套3522的外壁与所述定位孔3522d的内壁之间通过防转结构配合，所述防转结构限制所述螺套3522相对于所述安装座3521转动。
可选的，参阅图14所示，所述防转结构的横截面轮廓呈六边形，也就是 该定位孔3522d的横截面为六边形，该螺套3522具有与该定位孔3522d匹配的六边形截面轮廓。在实际实施过程中，该防回转结构的横截面也可以是其他数量的多边形；当然，螺套的横截面轮廓和所述定位孔的横截面也可以采用圆形，而为了限制螺套相对于安装座转动，螺套与定位孔可以采用过盈配合的方式，或者在螺套与定位孔之间设置键等连接件。
结合参阅图13、图14，在本发明一些实施例中，所述螺套3522的两端分别设置有用于限制所述螺套3522相对于所述安装座3521的轴向位置的第一限位部件3522b和第二限位部件3523，所述第一限位部件3522b抵在安装座3521的第一端外，所述第二限位部件3523抵在安装座3521的第二端外。图14中，第一端为安装座3521的上端，第二端为安装座3521的下端。
可选的，参阅图14所示，所述第一限位部件3522b为设置在所述螺套3522上的外凸缘，所述第二限位部件3523为可拆卸的设置在所述螺套3522上的卡簧。所述第二限位部件3523(如卡簧)可拆卸的卡接在所述螺套3522的卡槽3522c内。拆卸螺套3522时，只需要拆除卡簧，即可将螺套3522从安装部3521上拆除。
可选的，所述定位孔3522d的内壁与所述螺套3522的外壁之间设置有减震元件(图未示)。譬如，该减震元件可以为橡胶套，该橡胶套配合套置于螺套3522外，并与定位孔3522d的内部轮廓匹配；又譬如，该减震元件可以为多个橡胶片，该螺套3522具有多边形截面轮廓时，该螺套3522的各外侧壁上一一对应的粘接有该橡胶片，当螺套(3522)安装于定位孔3522d内，该橡胶片位于定位孔3522d的内壁与所述螺套3522的外壁之间。
参阅图9、图10所示，在本发明一些实施例中，所述电动调高装置还包括设置在所述切割机架200与所述支座100之间的减震单元400，所述减震单元400卡在所述支座100上，并能够相对于所述切割机架200的外壁滑动。通过在支座100上设置减震单元400，使切割机架200相对减震单元400作往复的线性运动，借由减震单元400的弹力，能够保证切割机架200做往复运动时的运动过程平稳，可起到减震的作用。
结合参阅图9、图10和图11，在本发明一些实施例中，所述容纳腔121的腔壁上开设有若干定位槽124，所述减震单元400设置于所述定位槽124内。
在本发明一些实施例中，参阅图11所示，所述定位槽124为条形槽，参阅图16所示，所述减震单元400为条形弹簧片，所述减震单元400沿长度方向设置有至少一个拱起部420。
可选的，参阅图16，所述拱起部420为两个，两个拱起部420之间圆滑过渡，此时，两个拱起部420的拱顶区域与切割机架200的外壁接触。在实际实施过程中，也可以设置一个或多个拱起部420。
在本发明一些实施例中，结合参阅图10、图16，所述支座100包括座体110和容置筒体120，所述切割机架200设置于所述容置筒体120内，所述减震单元400的一端弯折形成第一钩部430，所述减震单元400的另一端弯折形成第二钩部440，所述第一钩部430钩在所述容置筒体120一端的边缘上，所述第二钩部440钩在所述容置筒体120另一端的边缘上。此种结构中，减震单元400无需额外设置其他零件就能定位在支座100上。
相应的，结合参阅图11，所述定位槽124的长度方向大致平行于容置筒体120的轴线方向，使得减震单元400的长度方向与容置筒体120的轴向方向大致一致，使得切割机架200相对减震单元400作线性运动的阻力小。
在实际实施过程中，定位槽124也可以为设在容纳腔腔壁上的环形槽或弧形槽；当定位槽124为环形槽时，减震单元对应采用环形弹片，该环形弹片沿周向方向包括多个拱起部，各拱起部的拱顶区域与切割机架200的外壁接触；当定位槽124为弧形槽时，弧形槽的长边沿容置筒体120的周向方向，减震单元对应采用与弧形槽相应的圆弧条状弹簧片，该圆弧条状弹簧片也包括至少一个沿周向方向的拱起部，且拱起部的拱顶区域与切割机架200的外壁接触。
在本发明一些实施例中，所述减震单元400设置为多个，并沿所述切割机架200的周向间隔布置。本实施例中，所述减震单元400沿着切割机架200的周向布置3个。
在本发明一些实施例中，参见图19，所述电动调高装置还包括用于感应切割机架200调节高度的测量结构，该测量结构包括信号触发部270和至少两个第一传感器172，所述信号触发部270上设置有多个镂空区271和多个遮挡区272，各所述镂空区271和遮挡区272沿高度方向交替分布，所述第一传感器172用于感应所述镂空区271和所述遮挡区272，各所述第一传感器172沿所述高度方向间隔分布，至少两个所述第一传感器172采集的信号具有相位差，所述高度方向为所述切割机架200的升降方向。
调高时，两个第一传感器获取的信号波形实质是一致的，但是两者之间的相位不同，可以根据两个传感器之间的相位差的正负值确定切割机架的运动方向。
此种测量结构相较利用单个传感器测量调节高度的方式，能够通过各第一传感器的采集的信号共同确定割机架200的运动方向。
另外，若利用单个传感器测量调节高度，当传感器正好停止在遮挡区272和镂空区271的分界处附近时，由于切割过程中传感器可能会轻微振动，根据单个传感器采集的数据无法判断传感器对应的位置是处于遮挡区272还是镂空区271，测量精度偏低；若利用上述的至少两个第一传感器采集测量调节高度，当其中一个第一传感器对应在遮挡区272和镂空区271的分界处附近时，还可以根据另一个第一传感器确定当前的调高位置，相较利用单个传感器采集信号的方式，本实施例中利用至少两个第一传感器采集信号的方式能够达去噪效果，测量精度更高。
在本发明一些实施例中，所述第一传感器172为两个，所述镂空区271和所述遮挡区272在高度方向上的尺寸均为1/2h，则h为一个镂空区271和一个遮挡区272在高度方向的尺寸之和，两个所述第一传感器172在所述高度方向上的间距等于nh+1/4h，其中，n为自然数。此时，两个传感器获取的高度数据最多有1/4h的误差。
若信号触发部270设置于所述切割机架200上，各所述第一传感器172设置于所述支座100上时，再将图19中的在视图方向偏上的第一传感器定义为 传感器a，偏下的第一传感器172定义为传感器b，则切割机架200上行时，传感器a和传感器b采集的信号波形图参见图20，切割机架200下行时，传感器a和传感器b采集的信号波形图参见图21。
可选的，结合参见图10、图14、图15和图19，所述切割机架200包括机架本体260，所述信号触发部270设置于所述机架本体260上，并能够随所述切割机架200作线性运动；各所述第一传感器172设置于所述支座100上。
可选的，所述第一传感器172、第二传感器171均为对射型光电传感器。
可选的，参阅图12所示，支座100上设置有传感器支架170，信号发射器和信号接收器都设置在该传感器支架170上。
结合参阅图9、图11、图14，在本发明一些实施例中，所述容纳腔121的内壁设置有避让槽123，所述信号触发部270设置在所述避让槽123内。
结合参阅图13、图19，所述支座100上设置有用于感应调高极限位置的第二传感器171。实际实施过程中，调高极限位置通常包括最高极限位置和最低极限位置，最该极限位置和最高极限位置可以为镂空和遮挡的变换位置，且该变化位置避开上述的镂空区271和遮挡区272，譬如，参阅图19，最高极限位置和最低极限位置之间都是镂空的，但最高极限位置上方和最低底线位置下方都是非镂空的。
参阅图10所示，在本发明一些实施例中，所述切割机架200与所述支座100的底部之间连接有密封护罩500，所述密封护罩500上设置有多个相连接的折叠段，所述切割机架200作往复线性运动时，所述密封护罩500伸展或收缩。密封护罩500底部开设有供切割原动机600的输出端伸出的护罩底孔，密封护罩500起到对切割机架200的防尘防水保护作用另外，密封护罩500不仅可以沿竖直方向(切割机架的运动方向)伸展和收缩，密封护罩500在水平方向上也能够起到减震的作用。
参阅图10所示，在本发明一些实施例中，所述支座100的底部设置有用于承载所述支座100的支撑护板800，所述密封护罩500设置于所述支撑护板800的底部与所述切割机架200之间。所述支撑护板800和密封护罩500，能 够阻挡飞溅的泥土、水珠等杂质，对支座100、切割机架200、驱动组件300都起到防护作用。
结合参阅图10、图12、图18，在本发明一些实施例中，支撑护板800上设置有通孔801，下部筒体120b贯穿所述通孔801。
参阅图10所示，在本发明一些实施例中，所述密封护罩500与支撑护板800底部连接的一端外部尺寸大于与切割机机架200底部连接的一端外部尺寸，且密封护罩500呈圆台形。
参见图10，在本发明的一些实施例中，所述密封护罩500的上端通过固定环900压紧在支撑护板800底面，所述密封护罩500的下端连接在所述切割机架200的下部，固定环900通过螺栓安装在支撑护板800底部。
本发明一实施例还提供了一种割草机，包括：
机壳；
电动调高装置，安装在机壳上，用于调节切割原动机600的离地高度；
切割组件，与切割原动机600连接，用于执行切割作业；
行走组件，位于机壳底部；
控制组件，用于控制所述电动调高装置作业；
其中，所述电动调高装置包括：
电动调高装置，包括：
支座100，设置有容纳腔121；
切割机架200，设置于所述支座100的容纳腔121内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机600；
驱动组件300，包括固定在所述支座100上的电驱动单元310、与所述切割机架200连接的第二传动结构350以及连接在所述电驱动单元310与所述第二传动结构350之间的第一传动结构340，所述第一传动结构340包括相配合的蜗杆341和蜗轮342，所述蜗杆341与所述电驱动单元310的输出端连接，所述蜗轮342与所述第二传动结构350连接，所述第二传动结构350用于将所述蜗轮342的旋转运动转换为所述切割机架200沿垂直于作业平面方向的线性 运动；通过所述驱动组件300能够调节所述切割原动机600的离地高度。
在本发明一些实施例中，所述行走组件包括移动轮，所述移动轮至少设置三个，并安装在所述机壳上，以便于割草机行走，并且，行走组件还包括用于驱动移动轮转动的电机。
在本发明一些实施例中，所述切割组件包括切割盘和安装在切割盘上的多个切割刀片，切割刀片沿切割盘的周向均布，通过切割原动机600驱动切割组件运动，实现切割作业。由于切割原动机600的输出端连接切割组件，通过电动调高装置调整切割机架200的高度，即可调整切割原动机600的离地高度，从而实现对切割组件离地高度的调节。
根据用户的不同需求，通过控制组件控制电动调高装置作业，以调节不同的切割高度。其中，通过电控系统控制电驱动单元310动作，即可实现切割原动机600的离地高度调节。具体可依靠远程控制来实现，也可以通过设备自带的电控面板来实现。
综上，在本发明实施例提供的电动调高装置及割草机中，通过第一传动结构340和第二传动结构350将电驱动单元310的旋转动力转换为切割机架200的线性运动，从而能够调整切割机架200的离地高度，依靠控制电驱动单元310即可实现切割原动机600的高度调节，无需人工近距离操作调整切割高度，便于提高割草机的自动化，同时也利于实现远程操作。
请参阅图22和图23，本发明提供一种割草机，用于对草坪、植被等进行维护修剪。为了适用于不同的地形环境，本发明提供的割草机的切割高度可以调节。本申请提供的技术方案，不仅能够适用于电动式割草机，同样适用于步进式割草机、手推式割草机、坐骑式割草机等其它行进方式的割草机或者由汽油发动机驱动、太阳能驱动等其它动力驱动的割草机。
请参阅图22和图23，在本发明中，割草机包括机壳1、切割装置(图中未标示)、电动调高装置2和行走装置3。其中，切割装置至少部分安装在机壳1内部，其与零部件延伸在机壳1外侧，且切割装置相对于机壳1升降设置；电动调高装置2安装在机壳1内，用于调节切割装置的切割高度，且机壳 1内形成有滑移通道21，切割装置升降连接在滑移通道21内；行走装置3设置在机壳1的底部，实现割草机在工作过程中的整体移动。
请参阅图22和图23，在本实施例中，机壳1包括底座11以及可相对于底座11活动的盖体12，且底座11上形成一腔体，该腔体可用于安装割草机中的各零部件；机壳还包括支座，支座用于安装电动调高装置，其中，底座11和支座100上与切割装置对应的位置均设有一开口(图中未标示)，且该开口与电动调高装置2中的滑移通道21连通，此外，切割装置可以在滑移通道21内滑动，且切割装置在背离盖体12的方向至少部分伸出至底座外侧，以使切割装置能够进行切割草坪、植被等。需要说明的是，滑移通道21与切割装置的轴向平行，即调高方向与切割装置的轴向平行。
请参阅图22和图23，行走装置3安装在底座11上，便于割草机移动；在本实施例中，行走装置3包括两个主动轮以及两个从动轮，两个主动轮之间可以通过转轴进行连接，在一些实施例中，主动轮可通过转轴与电机或者发动机连接，从而使得主动轮具有驱动力；此外，从动轮可采用万向轮，已实现移动方向的调整；主动轮与从动轮的具体结构均属于现有技术，于此不再赘述。
请参阅图22和图23，在本发明的一些实施例中，切割装置包括动力机和切割刀片。其中，动力机安装在电动调高装置2中的切割机架200上，并随着切割机架200沿滑移通道21的往复升降，需要说明的是，动力机可为电动机、汽油发动机或者其它动力机构，在本实施例中，动力机为电动机；此外，动力机的输出轴依次穿过切割机架200和底座11，并位于底座11的外侧；切割刀片与动力机的输出轴朝向地面的一端同轴固定，并与动力机的输出轴存在一定的夹角，以实现割草机的割草作业。
请参阅图24至图27，以下对电动调高装置2进行详细描述。在本实施例中，电动调高装置2包括切割机架200和传动组件370，传动组件370包括电驱动单元310及传动结构330，传动结构330包括线性运动部件332及转动组件390。所述线性运动部件332包括与所述切割机架固定连接的丝杆372，所述转动组件390包括螺纹管371、主动齿轮373与从动齿轮374，所述主动齿 轮373与所述电驱动单元310的输出轴同轴固定，所述从动齿轮374同轴套设在所述螺纹管371的外侧并与所述螺纹管371连接，所述丝杆372的外螺纹与所述螺纹管371的内螺纹啮合，所述螺纹管371被所述电驱动单元310驱动旋转并带动线性运动部件332线性运动。其中，支座100安装在底座11上，并位于底座11上形成的腔体内，且支座100可用于安装电驱动单元310、传动组件370和切割机架200，需要说明的是，切割机架200与支座100滑移连接，电驱动单元310通过传动组件370与切割机架200传动连接，从而可实现切割机架200往复升降。
请参阅图24和图25，在本实施例中，支座100的顶部呈开口设置，支座100的底部开设有供动力机的输出轴穿过的通孔(图中未标示)，滑移通道21则形成在支座100内部；切割机架200滑移连接在滑移通道21内。进一步的，切割机架200呈中空圆柱状设置，其内部中空处用于安装切割电机以及穿设与切割电机相连的线束；切割机架200上还一体成型有第一耳板221和第二耳板222，第一耳板221位于切割机架200顶部位置的侧壁上，第二耳板222位于切割机架200底部位置的侧壁上，且第一耳板221和第二耳板222的中心位于同一直线上，第一耳板221和第二耳板222之间用于安装传动组件370中的丝杆372。
此外，切割机架200的外侧壁上开设有安装槽223，安装槽223内可安装引导机构(图中未标示)或者减震机构(图中未标示)，引导机构与减震机构能够沿安装槽223的长度方向发生相对滑动，以实现对切割机架200的调高导向，此外，减震机构通过弹性缓冲的原理，以降低割草机在移动过程中多产生的震动对切割机架200的影响，保证切割机架200的稳定性，需要说明的是，安装槽223沿切割机架200的周向开设有三个，引导机构或者减震机构与安装槽223一一对应；在本发明一些实施例中，减震机构和引导机构可由金属材料制成，例如由铝制型材制成。
请参阅图25和图26，在本实施例中，电驱动单元310固定在支座100上，并位于支座100和切割机架200之间；传动组件370将电驱动单元310和 切割机架200之间进行传动连接，并将电驱动单元310输出轴的旋转运动转换为切割机架200的线性运动。
进一步的，传动组件370包括螺纹管371、丝杆372、主动齿轮373和从动齿轮374。其中，主动齿轮373与电驱动单元310的输出轴同轴固定，且主动齿轮373与从动齿轮374相互啮合，需要说明的是，从动齿轮374的齿数大于主动齿轮373的齿数。在本实施例中，从动齿轮374为中空圆柱设置，且从动齿轮374的外侧壁上形成有与主动齿轮373相啮合的齿牙，从动齿轮374同轴套设在螺纹管371的外侧，螺纹管371通过筋板375与从动齿轮374连接，且筋板375位于螺纹管371和从动齿轮374之间，且筋板375沿螺纹管371的周向间隔设置有多个，筋板375可增加螺纹管371与从动齿轮374之间的连接强度，且采用该种连接方式，相比于将螺纹管371直接穿插在从动齿轮374上，可降低从动齿轮374和螺纹管371的整体重量，从而降低割草机整体的重量。在本申请的其他实施例中，也可在从动齿轮374的内部直接设置内螺纹，所述内螺纹可与丝杠372的外螺纹啮合。
请参阅图25、图26和图27，丝杆372的一端与第一耳板221固定，另一端穿过第二耳板222并向外延伸一部分，需要说明的是，切割机架200的高度调节范围由丝杆372在第一耳板221和第二耳板222之内的部分所限制，具体的高度调节范围，可根据割草机实际运用中的情况进行调节。丝杆372与螺纹管371螺纹连接，连接方式为丝杆372的外螺纹与螺纹管371的内螺纹啮合，需要说明的是，丝杆372不可转动，通过螺纹管371的转动以实现切割机架200的往复升降。此外，支座100的底壁上对应螺纹管371的位置成形一固定槽位(图中未标示)，螺纹管371的一端嵌入固定槽位内，且螺纹管371可在固定槽位内转动。
通过将螺纹管371直接与从动齿轮374固定，采用螺纹管371的内螺纹与丝杆372的外螺纹的传动方式，可提高传动效率，减少在传动过程中的动量损失，降低对电驱动单元的功耗，从而减少割草机整体的使用成本。
对割草机中切割刀片离地高度调节工作进行简述，在实际工作中，电驱动 单元310启动，电驱动单元310的输出轴带动主动齿轮373旋转，主动齿轮373的旋转带动从动齿轮374的转动，从而带动与从动齿轮374固定的螺纹管371转动，由于丝杆372不可转动，丝杆372在螺纹管371的传动下实现往复升降，进而使得切割机架200往复升降，切割机架200的往复升降实现切割刀片离地高度调节工作。
综上所述，本发明通过将螺纹管371直接与从动齿轮374固定，采用螺纹管371的内螺纹与丝杆372的外螺纹的传动方式，可提高传动效率，减少在传动过程中的动量损失，降低对电驱动单元的功耗，从而减少割草机整体的使用成本。所以，本发明有效克服了现有技术中的种种缺点而具高度产业利用价值。
上述实施例仅例示性说明本发明的原理及其功效，而非用于限制本发明。任何熟悉此技术的人士皆可在不违背本发明的精神及范畴下，对上述实施例进行修饰或改变。因此，举凡所属技术领域中具有通常知识者在未脱离本发明所揭示的精神与技术思想下所完成的一切等效修饰或改变，仍应由本发明的权利要求所涵盖。

Claims (20)

  1. 一种电动调高装置，其特征在于，包括：
    支座(100)，设置有容纳腔(121)；
    切割机架(200)，设置于所述支座(100)的容纳腔(121)内并能够沿垂直于作业平面方向作往复线性运动，用于承载切割原动机(600)；
    驱动组件(300)，包括固定在所述支座(100)上的电驱动单元(310)以及与切割机架(200)连接的传动结构(330)，所述传动结构(330)将电驱动单元(310)的旋转运动转换为线性运动以带动切割机架(200)线性运动，通过所述驱动组件(300)能够调节所述切割原动机(600)的离地高度；以及
    用于感应切割机架(200)调节高度的测量结构，所述测量结构包括：
    信号触发部(270)，所述信号触发部(270)上设置有多个镂空区(271)和多个遮挡区(272)，各所述镂空区(271)和遮挡区(272)沿高度方向交替分布，所述高度方向为所述切割机架(200)的升降方向，和
    至少两个第一传感器(172)，用于感应所述镂空区(271)和所述遮挡区(272)，各所述第一传感器(172)沿所述高度方向间隔分布，至少两个所述第一传感器(172)采集的信号具有相位差。
  2. 根据权利要求1所述的电动调高装置，其特征在于：
    所述第一传感器(172)为两个，所述镂空区(271)和所述遮挡区(272)在高度方向上的尺寸均为1/2h，两个所述第一传感器(172)在所述高度方向上的间距等于nh+1/4h，其中，n为自然数。
  3. 根据权利要求1所述的电动调高装置，其特征在于：
    所述切割机架(200)包括机架本体(260)，所述信号触发部(270)设置于所述机架本体(260)上，并能够随所述切割机架(200)作线性运动；；各所述第一传感器(172)设置于所述支座(100)上。
  4. 根据权利要求3所述的电动调高装置，其特征在于：
    所述容纳腔(121)的内壁设置有避让槽(123)，所述信号触发部(270)设置在所述避让槽(123)内。
  5. 根据权利要求1所述的电动调高装置，其特征在于：
    所述支座(100)上设置有用于感应调高极限位置的第二传感器(171)。
  6. 根据权利要求1-5任一项所述的电动调高装置，其特征在于：
    所述传动结构(330)包括与切割机架(200)连接且运动方向垂直于作业平面方向的线性运动部件(332、352)以及连接在线性运动部件(332、352)与所述电驱动单元(310)之间的转动组件(390)，所述电驱动单元(310)通过转动组件与所述线性运动部件(332、352)传动连接，所述转动组件将电驱动单元(310)的旋转运动转换为线性运动部件(332、352)的线性运动以带动切割机架(200)线性运动。
  7. 根据权利要求6所述的电动调高装置，其特征在于：
    所述线性运动部件(332)包括与所述切割机架(200)固定连接的丝杆(372)，所述转动组件(390)包括螺纹管(371)，所述螺纹管(371)被所述电驱动单元(310)驱动旋转，所述丝杆(372)的外螺纹与所述螺纹管(371)的内螺纹啮合，所述丝杆固定在所述切割机架(200)上。
  8. 根据权利要求7所述的电动调高装置，其特征在于：所述转动组件(390)还包括：
    主动齿轮(373)，与所述电驱动单元(310)的输出轴同轴固定，及
    从动齿轮(374)，同轴套设在所述螺纹管(371)的外侧并与所述螺纹管(371)连接。
  9. 根据权利要求8所述的割草机，其特征在于：
    所述螺纹管(371)通过筋板与所述从动齿轮(374)连接，所述筋板(375)位于所述螺纹管(371)和所述从动齿轮(374)之间，且所述筋板(375)沿所述螺纹管(371)的周向间隔设置有多个。
  10. 根据权利要求7所述的电动调高装置，其特征在于：
    所述切割机架(200)一体成型有第一耳板(221)和第二耳板(222)，所述第一耳板(221)位于所述切割机架(200)侧壁的顶部，所述第二耳板(222)位于所述切割机架(200)侧壁的底部，且所述第一耳板(221)和第二耳板(222)的中心位于同一直线上，并用于安装所述丝杆(372)。
  11. 根据权利要求10所述的电动调高装置，其特征在于：
    所述丝杆(372)的第一端与所述第一耳板(221)固定，所述丝杆(372)的第二端穿过所述第二耳板(222)与所述螺纹管(371)螺纹连接，且所述螺纹管(371)位于所述第一耳板(221)与所述第二耳板(222)之间。
  12. 根据权利要求6所述的电动调高装置，其特征在于：
    所述转动组件(390)包括与电驱动单元(310)连接的旋转运动部件(331)，所述旋转运动部件(331)上设置有第一齿部，所述线性运动部件(332)上设置有第二齿部，且所述第一齿部与第二齿部相互啮合。
  13. 根据权利要求12所述的电动调高装置，其特征在于：
    所述传动结构(330)与电驱动单元(310)的输出端之间通过传动轴(321)连接，所述传动轴(321)水平设置。
  14. 根据权利要求12所述的电动调高装置，其特征在于：
    所述转动组件(390)还包括调速机构(320)，所述传动结构(330)与电驱动单元(310)的输出端之间通过所述换向调速机构(320)连接，所述换向调速机构(320)包括与电驱动单元(310)输出端连接的第一旋转部件和与旋转运动部件(331)连接的第二旋转部件，且所述第一旋转部件与第二旋转部件配合运动，所述第一旋转部件与第二旋转部件的旋转轴线相互垂直，所述旋转运动部件(331)与第二旋转部件的旋转轴线同轴。
  15. 根据权利要求12-14中任一项所述的电动调高装置，其特征在于：
    所述旋转运动部件(331)为齿轮，所述线性运动部件(332)为齿条。
  16. 根据权利要求6所述的电动调高装置，其特征在于：
    所述转动组件(390)包括连接在所述电驱动单元(310)与所述线性运动部件(352)之间的传动杆(351)及第一传动结构(340)，所述第一传动结构(340)包括相配合的蜗轮(342)和蜗杆(341)，所述蜗杆(341)与所述电驱动单元(310)的输出端连接，所述蜗轮(342)与所述传动杆(351)的第一端连接，所述传动杆(351)的第二端与所述线性运动部件(352)连接，所述线性运动部件(352)用于将所述蜗轮(342)的旋转运动转换为所述切割机架(200)沿垂直于作业平面方向的线性运动。
  17. 根据权利要求16所述的电动调高装置，其特征在于：
    所述线性运动部件(352)上设置有螺孔(3522a)，所述传动杆(351)穿设在所述螺孔(3522a)内，并与所述螺孔(3522a)螺纹配合。
  18. 根据权利要求16所述的电动调高装置，其特征在于：
    所述蜗轮(342)同轴套设于所述传动杆(351)上，且传动杆(351)和蜗轮(342)的旋转轴线沿竖直方向，所述蜗杆(341)的旋转轴线沿水平方 向。
  19. 根据权利要求6所述的电动调高装置，其特征在于：
    所述电动调高装置还包括设置于所述切割机架(200)与支座(100)之间的减震单元(400)，所述减震单元(400)具有弹性，所述减震单元(400)的一侧卡设于所述切割机架(200)外壁上，另一侧相对于所述支座(100)内壁滑动；
    所述切割机架(200)与支座(100)的底部之间连接有密封护罩(500)，所述密封护罩(500)上设置有多个相连接的折叠段，所述切割机架(200)作往复线性运动时，所述密封护罩(500)伸展或收缩。
  20. 一种割草机，其特征在于，包括：
    机壳；
    如权利要求1-19任一项所述的电动调高装置，安装在机壳上，用于调节切割原动机(600)的离地高度；
    切割组件，与切割原动机(600)连接，用于执行切割作业；
    行走组件，位于机壳底部；和
    控制组件，用于控制所述电动调高装置作业。
PCT/CN2023/093821 2022-05-18 2023-05-12 电动调高装置及割草机 WO2023221889A1 (zh)

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Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207911892U (zh) * 2018-03-06 2018-09-28 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） 智能农药喷洒车
CN111492805A (zh) * 2019-01-31 2020-08-07 创科无线普通合伙 具有可变高度或速度的动力工具
CN216087671U (zh) * 2021-11-09 2022-03-22 格力博(江苏)股份有限公司 电动调高装置和割草机
DE102021127915A1 (de) * 2020-11-04 2022-05-05 Honda Motor Co., Ltd. Arbeitsgerät
CN216532637U (zh) * 2021-11-12 2022-05-17 格力博(江苏)股份有限公司 割草机
CN217936535U (zh) * 2022-05-18 2022-12-02 格力博(江苏)股份有限公司 一种割草机
CN218244490U (zh) * 2022-10-10 2023-01-10 格力博(江苏)股份有限公司 电动调高装置及割草机
CN218244491U (zh) * 2022-10-10 2023-01-10 格力博(江苏)股份有限公司 电动调高装置及割草机

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN207911892U (zh) * 2018-03-06 2018-09-28 山东省农业科学院玉米研究所（山东省农业科学院玉米工程技术研究中心） 智能农药喷洒车
CN111492805A (zh) * 2019-01-31 2020-08-07 创科无线普通合伙 具有可变高度或速度的动力工具
DE102021127915A1 (de) * 2020-11-04 2022-05-05 Honda Motor Co., Ltd. Arbeitsgerät
CN216087671U (zh) * 2021-11-09 2022-03-22 格力博(江苏)股份有限公司 电动调高装置和割草机
CN216532637U (zh) * 2021-11-12 2022-05-17 格力博(江苏)股份有限公司 割草机
CN217936535U (zh) * 2022-05-18 2022-12-02 格力博(江苏)股份有限公司 一种割草机
CN218244490U (zh) * 2022-10-10 2023-01-10 格力博(江苏)股份有限公司 电动调高装置及割草机
CN218244491U (zh) * 2022-10-10 2023-01-10 格力博(江苏)股份有限公司 电动调高装置及割草机

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