WO2023072040A1 - 割草机及割草机的调高方法 - Google Patents

割草机及割草机的调高方法 Download PDF

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Publication number
WO2023072040A1
WO2023072040A1 PCT/CN2022/127276 CN2022127276W WO2023072040A1 WO 2023072040 A1 WO2023072040 A1 WO 2023072040A1 CN 2022127276 W CN2022127276 W CN 2022127276W WO 2023072040 A1 WO2023072040 A1 WO 2023072040A1
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WO
WIPO (PCT)
Prior art keywords
height adjustment
height
cutting
cutting frame
sensor
Prior art date
Application number
PCT/CN2022/127276
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English (en)
French (fr)
Inventor
曹金
高杰
李汪浩
蒲志高
阿尔赞吉米
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.)
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Publication date
Priority claimed from CN202111267827.5A external-priority patent/CN116034712A/zh
Priority claimed from CN202122607246.3U external-priority patent/CN216017814U/zh
Priority claimed from CN202111323544.8A external-priority patent/CN116097971A/zh
Priority claimed from CN202122739295.2U external-priority patent/CN216017823U/zh
Priority claimed from CN202122781368.4U external-priority patent/CN216532637U/zh
Priority claimed from CN202111344924.XA external-priority patent/CN116114458A/zh
Priority claimed from CN202111494153.2A external-priority patent/CN116235680A/zh
Priority claimed from CN202111494155.1A external-priority patent/CN116235681A/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 WO2023072040A1 publication Critical patent/WO2023072040A1/zh

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    • AHUMAN NECESSITIES
    • A01AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01DHARVESTING; MOWING
    • A01D34/00Mowers; Mowing apparatus of harvesters
    • A01D34/01Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/74Cutting-height adjustment

Definitions

  • the invention relates to the technical field of mowing, in particular to a lawnmower and a method for adjusting the height of the lawnmower.
  • a lawn mower is a mechanical tool used to trim lawns, vegetation, etc. It 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 successively on the market, so that users can freely choose the mowing height, thereby controlling the height of the lawn after mowing.
  • the main purpose of the present invention is to provide a lawn mower and a height adjustment method of the lawn mower, and provide a new way to solve the problem in the prior art that the height adjustment of the lawn mower requires manual adjustment.
  • a lawnmower comprising:
  • a cutting device is arranged on the casing, and the cutting device has a cutting tool
  • a height adjustment mechanism capable of driving the cutting device to move relative to the casing along the height adjustment direction
  • the sensing component is used to detect the height adjustment distance of the cutting device moving relative to the casing along the height adjustment direction, the sensing component has a corresponding grating structure and a first sensor, and the grating structure includes alternately distributed hollow parts and a blocking part, the first sensor includes a first signal receiver and a first signal transmitter, and the first signal between the first signal transmitter and the first signal receiver is periodically barrier;
  • control unit controlling the height adjustment mechanism to adjust the height according to the number of times the first signal is blocked
  • one of the grating structure and the first sensor is directly or indirectly arranged on the cutting device, and the other of the grating structure and the first sensor is directly or indirectly on the casing.
  • the height adjustment mechanism also includes:
  • a cutting frame the cutting device is arranged on the cutting frame, and the cutting device also has a cutting motor for driving the cutting tool to perform a cutting action, and the cutting frame is installed on the slide of the casing move in the channel;
  • the transmission structure connects the height adjustment motor and the cutting frame, and the transmission structure is used to convert the rotary motion output by the height adjustment motor into the linear motion of the cutting frame along the sliding channel, through the The height adjustment motor can drive the cutting frame to adjust the height;
  • one of the grating structure and the first sensor is arranged on a cutting frame.
  • the grating structure is strip-shaped, and the hollowed-out parts and the blocking parts of the grating structure are arranged alternately along the height adjustment direction, wherein the grating structure is arranged at the cutting On the frame, the first sensor is arranged on the casing.
  • the grating structure is strip-shaped, and the hollowed-out parts and the blocking parts of the grating structure are alternately arranged along the height adjustment direction, wherein the grating structure is arranged on the machine On the casing, the first sensor is arranged on the cutting frame.
  • the number of the first sensors is two, and the two first sensors are arranged along the length direction of the grating structure.
  • the dimensions of the plurality of hollow parts and the barrier parts in the grating structure are the same.
  • the grating structure is in the shape of a disk, the grating structure is connected to the height-adjusting motor and rotates with the height-adjusting motor, and each of the hollowed out parts of the grating structure and each of the The blocking parts are alternately and uniformly distributed on the grating structure.
  • the height adjustment mechanism is also correspondingly provided with a height adjustment limit structure for limiting the minimum cutting height and the maximum cutting height of the cutting device.
  • the height adjustment limit structure includes a micro switch and a trigger for triggering the micro switch; wherein, one of the micro switch and the trigger is set On the cutting frame, one of the microswitch and the trigger is arranged on the casing;
  • the trigger member triggers the micro switch, and the height adjustment motor stops.
  • the trigger includes a trigger body, a high trigger part protruding from the trigger body, a low trigger part protruding from the trigger body, the high trigger part and the The low-level trigger parts are arranged at intervals along the height direction, and an avoidance space is formed between the high-level trigger parts and the low-level trigger parts;
  • the high trigger part contacts and triggers the micro switch; when the cutting frame is at the lowest height from the ground, the low trigger part contacts and triggers The micro switch.
  • the high-position trigger part is provided with a high-position trigger surface facing the micro switch
  • the low-position trigger part is provided with a low-position trigger surface facing the micro switch
  • the trigger A partition surface facing the avoidance space is set on the part body, the partition surface is separated from the micro switch by the avoidance space, the high-position trigger surface and the partition surface are transitioned through a first transition slope, The transition between the low trigger surface and the spacer surface is through a second transition slope.
  • the casing is provided with a first limiting slot
  • the bottom of the trigger is inserted into the first limiting slot
  • the upper end of the trigger is provided with an elastic locking arm
  • the casing is provided with a slot for the elastic snap-in arm to snap into.
  • a limit riser is provided on the casing, and the limit riser blocks the side of the trigger member facing away from the micro switch, and the limit stand A clamping plate is arranged above, and the clamping groove is formed between the bottom of the clamping plate and the top of the limiting vertical plate,
  • the end of the elastic locking arm is provided with a first limiting portion, the elastic locking arm passes through the locking slot, and the clamping plate locks the first limiting portion.
  • the clamping plate is parallel to the limiting vertical plate and is located outside the limiting vertical plate.
  • the height position limiting assembly further includes a mount connected to the cutting frame, and the micro switch is detachably mounted on the mount.
  • the mounting base is provided with a socket cavity and an elastic clamp arm
  • the micro switch is disposed in the socket cavity
  • the elastic clamp arm is provided with a device for switching the micro switch The switch is limited by the second limiting part in the insertion cavity.
  • the height-adjusting limit structure includes a light-blocking sheet and a second sensor, and the light-blocking sheet includes a blocking portion at the highest cutting height, a blocking portion at the lowest cutting height, and a blocking portion at the lowest cutting height. a hollow portion between two intercepting portions, the intercepting portions are used to block the signal of the second sensor;
  • One of the light blocking sheet and the second sensor is arranged on the cutting frame, and one of the light blocking sheet and the second sensor is arranged on the casing.
  • the mower also includes:
  • a shock absorbing mechanism includes a shock absorbing seat and a first elastic deformation part and a second elastic deformation part arranged on the shock absorbing seat;
  • a guide mechanism, the guide mechanism is connected with the shock absorber, and the guide mechanism and the shock absorber can slide relative to each other along the height adjustment direction of the cutting frame; the shock absorber and the guide One of the mechanisms is installed on the cutting frame, and the other is installed on the casing;
  • the first elastic deformation part elastically resists the guide mechanism to limit the swing and inclination of the cutting frame relative to the height adjustment direction; the second elastic deformation part elastically resists the guide mechanism to limit The cutting frame rocks in the radial direction.
  • the cutting frame is provided with a mounting groove, the guiding mechanism is mounted in the mounting groove, and the shock absorbing mechanism is mounted on the casing; or the shock absorbing The mechanism is installed in the installation groove, and the guide mechanism is installed on the casing.
  • the guide mechanism includes a guide seat, two guide plates are arranged opposite to each other on the guide seat, a guide groove along the height adjustment direction is formed between the two guide plates, and the reduction The first elastic deformation part of the shock mechanism extends into the guide groove and abuts against the inner wall of the guide plate.
  • the first elastic deformation part includes two opposite first elastic plates, one end of the first elastic plate is connected to the shock absorber, and the other end is a suspended end, so The free end of the first elastic plate protrudes into the guide groove and abuts against the inner wall of the guide plate outward.
  • the free end of the first elastic plate is provided with a first protrusion protruding toward the direction of the guide plate, and the first protrusion has a function of contacting with the inner wall of the guide plate. curved surface.
  • a side of the guide plate close to the shock absorbing mechanism is provided with a guide surface for guiding the first elastic deformation part to extend into the guide groove.
  • the guide seat is provided with a limit portion protruding toward the shock absorbing mechanism, the limit portion is located between the two guide plates, and the shock absorber mechanism The second elastic deformation part abuts against the limiting part along the radial direction of the cutting frame.
  • the second elastic deformation part includes two opposite second elastic plates, the first end of the second elastic plate is connected to the shock-absorbing seat, the other end is suspended, and The first end of the second elastic plate is bent, and the suspended end of the second elastic plate abuts against the limiting portion.
  • the bending directions of the two second elastic plates are opposite or opposite to each other.
  • the dangling end of the second elastic plate is provided with a second protrusion protruding toward the direction of the position-limiting part, and the second protrusion has a function of contacting the position-limiting part. curved surface.
  • the limiting portion is formed by arching the guide seat toward the direction where the shock absorbing mechanism is located.
  • the transmission structure includes:
  • it can be driven to rotate by the height adjustment motor
  • the transmission part is arranged on the cutting frame, and the transmission part is provided with screw holes;
  • the transmission rod is passed through the screw hole and threadedly engaged with the screw hole.
  • the transmission structure also includes:
  • the driving gear is connected with the height adjustment motor
  • the driven gear is coaxially fixed with the transmission rod;
  • the driven gear meshes with the driving gear.
  • the height adjustment mechanism includes:
  • the cutting frame is installed in the sliding channel of the casing, and the cutting device is arranged on the cutting frame and moves with the cutting frame;
  • the height-adjusting drum is connected with the height-adjusting motor, and the height-adjusting drum is socketed with the cutting frame;
  • the height-adjusting motor drives the height-adjusting drum to rotate in the first direction
  • the The height adjustment drum drives the cutting frame to slide axially along the sliding channel.
  • the height-adjustment motor drives the height-adjustment drum to rotate in the first direction
  • the cutting frame drops to the lowest position.
  • a guide is provided on the casing, the sliding channel is formed in the guide, and an anti-rotation device is provided between the guide and the height adjustment drum.
  • a guide structure, a one-way locking member is also provided between the guide member and the casing, and the one-way locking member has an unlocked state and a locked state;
  • the one-way locking member When the height-adjusting drum rotates in the first direction, the one-way locking member is in a locked state, the guide member is relatively fixed to the casing, and the cutting frame axially slides along the sliding channel ;
  • the one-way locking member When the height-adjusting drum rotates to the second direction, the one-way locking member is in an unlocked state, the guide member can rotate relative to the casing, and the cutting frame and the guide member are simultaneously connected with the cutting machine.
  • the frame rotates.
  • the helical guide structure includes:
  • the ratchets are arranged on the height-adjusting drum, and the ratchets spirally ascend along the axial direction of the height-adjusting drum;
  • a pawl arranged on the cutting frame, the pawl cooperates with the ratchet
  • the height-adjusting motor drives the height-adjusting drum to rotate in the first direction, the pawl climbs up along the helical direction of the ratchet teeth so that the cutting frame rises along its axial direction;
  • the height-adjusting motor drives the height-adjusting drum to rotate in the second direction
  • the pawl is engaged with the ratchet teeth to make the cutting frame rotate in the second direction.
  • the pawl when the pawl climbs to the top along the helical direction of the ratchet, the pawl breaks away from the top of the ratchet and falls back to the bottom of the ratchet.
  • the anti-rotation guide structure includes:
  • the limiting rib is axially arranged on the outer wall of the cutting frame
  • the second limiting groove is axially arranged on the inner wall of the guide piece, and the second limiting groove cooperates with the limiting edge.
  • the limiting edge is arranged along the circumferential direction of the cutting frame; the second limiting groove is arranged along the circumferential direction of the sliding ring, and the second limiting groove and the limiting edge One to one correspondence.
  • the height-adjusting drum includes:
  • the interior of the cylinder is hollow, and the ratchet is arranged on the outer wall of the cylinder;
  • a limit plate the limit plate is connected to the end of the barrel, the outer diameter of the limit plate is larger than the outer diameter of the barrel, and the end of the ratchet extends to the limit plate.
  • the bottom of the limit plate is provided with a second connection part for connecting the height adjustment motor, the height adjustment motor is arranged in the height adjustment drum, and the output of the height adjustment motor A shaft is connected to the second connection portion.
  • the interior of the cutting frame is hollow, the height-adjusting drum is located in the cutting frame, and the cutting frame includes:
  • the pawl is disposed on the inner wall of the first shaft section
  • the second shaft section, the second shaft section is connected to the end of the first shaft section, and the diameter of the second shaft section is larger than the diameter of the first shaft section, and there is a gap between the second shaft section and the first shaft section A limit step, the limit plate of the height-adjusting drum cooperates with the limit step to limit the position.
  • the present invention also provides a height adjustment method of a lawnmower, the height adjustment method comprising:
  • Control the first signal receiver to continuously receive the first signal, and obtain the actual height adjustment distance according to the number of interruptions in receiving the first signal
  • the height adjustment motor is stopped.
  • the current position of the height adjustment motor is stored, and the current position is used as a relative initial position for the next height adjustment.
  • the height adjustment method also includes:
  • the height-adjusting motor is controlled to stop running, and the cutting device reaches the lowest cutting position or the highest cutting position at this time.
  • the height adjustment method also includes:
  • the height-adjusting electrode is controlled to stop running, and at this time the cutting device reaches the lowest cutting position or the highest cutting position, wherein the second sensor is a photogate sensor.
  • the height adjustment method also includes:
  • the current position of the height adjustment motor is stored, and the current position is used as the absolute initial position of the height adjustment .
  • the height adjustment method further includes: each time the height adjustment is performed, after the height adjustment motor is started,
  • the present invention provides a lawn mower and a height adjustment method for the lawn mower.
  • the height adjustment mechanism is used to adjust the height of the cutting frame from the ground, and the grating mechanism in the sensing component is used to periodically block the signal of the first sensor.
  • the actual height adjustment distance can be obtained according to the number of signal interruptions, not only automatic height adjustment can be realized, but also precise control of the height adjustment distance can be realized.
  • Fig. 1 shows an exemplary overall structure schematic diagram of the lawnmower of the present invention
  • Fig. 2 is a schematic diagram showing the structure of the lawn mower in Fig. 1 after the cover is removed;
  • Fig. 3 shows the top view of support, height-adjusting mechanism and cutting frame in one embodiment of lawnmower of the present invention
  • Fig. 4 shows the explosion diagram of Fig. 3
  • FIG. 5 is a schematic diagram of a partial three-dimensional structure of FIG. 3;
  • Fig. 6 shows the schematic structural view of the support in Fig. 3;
  • Fig. 7 shows the structural representation of the cutting frame, the transmission structure and the first sensor in Fig. 3;
  • Fig. 8 is an enlarged view of part A in Fig. 6;
  • Fig. 9 is an enlarged view of part B in Fig. 7;
  • Fig. 10 shows the structural representation of the support, the height-adjusting mechanism and the cutting frame in another embodiment of the mower of the present invention
  • Fig. 11 is shown as the structural representation of the support, the height adjustment mechanism and the cutting frame identical to Fig. 10;
  • FIG. 12 is a schematic diagram of FIG. 10 at another viewing angle
  • Fig. 13 is shown as the structural representation of cutting frame in Fig. 10;
  • Fig. 14 is an enlarged view of part C in Fig. 11;
  • Fig. 15 shows the assembly diagram of the induction component, the height adjustment limit structure and the cutting frame in Fig. 10;
  • Figure 16 is a schematic view showing the installation positions of the first sensor and the second sensor in Figure 10;
  • Fig. 17 shows the structural representation of the mower of the present invention and the support, the height adjustment mechanism and the cutting frame in another embodiment
  • Fig. 18 corresponds to the schematic diagram of the structure of the cutting frame in Fig. 17 when it is at the lowest height from the ground;
  • Fig. 19 corresponds to Fig. 17, which is a schematic structural view of the embodiment of the present invention when the cutting frame is at the highest height from the ground;
  • FIG. 20 is a schematic structural diagram of the grating structure in FIG. 18;
  • Figure 21 shows the overall cross-sectional view corresponding to Figure 17;
  • Figure 22 is a schematic structural view of the trigger in Figure 18;
  • Fig. 23 is a schematic diagram showing the explosion corresponding to Fig. 17 after removing the support
  • Figure 24 shows an enlarged view of I in Figure 23;
  • Figure 25 is an enlarged schematic view of part D in Figure 2;
  • Fig. 26 shows the sectional view of the lawnmower of the present invention after the cutting frame, the shock absorbing mechanism and the guiding mechanism are assembled in another embodiment
  • Fig. 27 shows the exploded view of the cutting frame, shock absorbing mechanism, guiding mechanism and height adjusting mechanism of the lawnmower of the present invention in yet another embodiment
  • FIG. 28 shows an assembly diagram corresponding to FIG. 27 .
  • Figure 29 is a sectional view of Figure 28;
  • Fig. 30 shows an exemplary structure diagram of an example shock absorbing mechanism
  • Fig. 31 shows an exemplary structural schematic view of the guiding mechanism
  • Fig. 32 shows another exemplary structural schematic view of the guiding mechanism
  • Fig. 33 is a schematic diagram of the assembly relationship of another exemplary height-adjusting mechanism, cutting tool and casing in the mower of the present invention.
  • Figure 34 is a cross-sectional view of Figure 33;
  • Fig. 35 is a schematic structural view of the height-adjusting drum in Fig. 33;
  • Fig. 36 is a schematic structural view of the cutting frame in Fig. 33;
  • Figure 37 is a schematic structural view of the guide in Figure 33;
  • Fig. 38 is a partial structural diagram of the lawn mower adopting the structure of Fig. 33;
  • Fig. 39 is a schematic diagram of the overall structure of the mower corresponding to Fig. 33;
  • Fig. 40 is an exemplary flow chart of the height adjustment method according to the embodiment of the present invention.
  • Fig. 41 is another exemplary flow chart of the height adjustment method according to the embodiment of the present invention.
  • 100-chassis 110-base, 120-cover, 130-support, 131-sliding channel, 132-limiting vertical plate, 133-card plate, 134-first limiting groove; 140-guide, 141-the second limit groove; 150-one-way locking piece;
  • 200-height adjustment mechanism 210-cutting frame, 211-installation groove, 212-first shaft section, 2121-pawl, 213-second shaft section, 2131-limiting edge; 220-height adjustment motor; 230- Transmission structure, 231-driving gear, 232-driven gear, 233-transmission rod, 234-transmission part, 234a-screw hole; 250-height adjustment drum, 251-cylinder body; 252-ratchet, 253-limit Disc, 254-the second connecting part;
  • 300-sensing component 310-grating structure, 311-hollowout part, 312-barrier part, 320-first sensor, 321-first signal receiver, 322-first signal transmitter;
  • 400-height limit structure 400-height limit structure; 410-micro switch, 411-micro switch body, 412-shrapnel, 413-trigger roller; 420-trigger, 421-trigger body, 422-low trigger part, 423-high Trigger part, 420a-avoidance space, 424-elastic locking arm, 424a-first limiting part; 430-mounting seat, 430a-inserting cavity, 430b-opening, 431-elastic locking arm, 431a-second limiting part ; 440-light blocking sheet, 441-intercepting part, 442-hollow part, 450-second sensor, 451-second signal transmitter, 452-second signal receiver; 460-installation plate;
  • 500-shock absorbing mechanism 510-shock absorbing seat, 511-grooving, 520-first elastic deformation part, 521-first elastic plate, 5211-first protrusion, 530-second elastic deformation part, 531-the first Two elastic plates, 5311-the second protrusion;
  • 600-guiding mechanism 610-guiding seat, 620-guiding plate, 621-guiding surface, 630-limiting part, 640-guiding groove, 650-first connecting part;
  • 810-cutting motor 820-cutting knife, 821-cutting knife.
  • the lawn mower provided by the present invention is used for maintaining and trimming lawns, vegetation, etc.
  • the cutting height of the lawn mower provided by the present invention can be adjusted.
  • the technical solution provided by this application is not only applicable to electric lawn mowers, but also applicable to other driving modes such as stepping lawn mowers, hand-push lawn mowers, and riding lawn mowers; in addition, the mowers of this application
  • Each actuator in the grass machine can be directly driven by electric energy, adopt the mode of storage battery or direct plug-in electricity, also can adopt other modes such as gasoline engine drive, solar energy device drive.
  • the present invention provides a lawn mower, including a casing 100, a cutting device, a height adjustment mechanism 200, a sensor assembly 300 and a control unit (not shown); the cutting device has a cutting tool, The cutting device is arranged on the casing 100; the height adjustment mechanism 200 can drive the cutting device to move relative to the casing 100 along the height adjustment direction; the sensing component 300 is used to detect the relative height of the cutting device
  • the height adjustment distance of the housing 100 moving along the height adjustment direction, the sensing component 300 has a corresponding grating structure 310 and a first sensor 320, the grating structure 310 includes alternately distributed hollow parts 311 and blocking parts 312, the
  • the first sensor 320 includes a first signal receiver 321 and a first signal transmitter 322, and the first signal between the first signal transmitter 322 and the first signal receiver 321 is periodically adjusted when it is raised.
  • the control unit controls the height adjustment mechanism to adjust the height according to the number of times the first signal is blocked; wherein, one of the grating structure 310 and the first sensor 320 is directly or indirectly arranged in the cutting On the device, the other one of the grating structure 310 and the first sensor 320 is directly or indirectly connected to the casing 100 .
  • the grating structure 310 is disposed on the cutting device, and the first sensor 320 is disposed on the casing 100;
  • the grating structure 310 is disposed on the casing 100
  • the first sensor 320 is disposed on the cutting device.
  • the first sensor 320 here may be a photogate sensor, and both the first signal transmitter 322 and the first signal receiver 321 are components of the photogate sensor.
  • the height adjustment mechanism When adjusting the height, input the preset height adjustment distance, and the height adjustment mechanism starts to drive the cutting device to move relative to the casing 100 along the height adjustment direction.
  • the height adjustment mechanism automatically stops running; wherein, the principle of the sensing component 300 monitoring the actual height adjustment distance is: during the operation of the height adjustment mechanism, the first signal transmitter 322 continues to emit the first signal, the first signal receiver 321 continues to receive the first signal, and the transmitted first signal is alternately blocked by the blocking portion 312 and passes through the hollow portion 311, so that when the first signal receiver 321 receives the first signal, every time it is blocked by the blocking portion 312 is blocked once, the first signal is interrupted once, every time the first signal passes through the hollow part 311 once, because one of the grating structure 310 and the first sensor 320 is arranged on the cutting frame 210 , the other of which is set on the casing 100, the first signal is blocked once and passed once, and the cutting device is moved relative to the casing 100 along the height adjustment direction
  • the height adjustment mechanism includes a cutting frame 210, a height adjustment motor 220 and a transmission structure 230, the cutting device is arranged on the cutting frame 210, and the The cutting device also has a cutting motor 810 for driving the cutting tool to perform a cutting action, and the cutting frame 210 is installed in the sliding channel 131 of the casing 100; the height-adjusting motor 220 is fixed to the casing 100 Connection; the transmission structure 230 connects the height adjustment motor 220 and the cutting frame 210, and the transmission structure 230 is used to convert the rotary motion output by the height adjustment motor 220 into the cutting frame 210 along the sliding path.
  • the height adjustment motor 220 can drive the cutting frame 210 to slide along the sliding channel 131 to adjust the height; wherein, one of the grating structure 310 and the first sensor 320 It is arranged on the cutting frame 210 , that is to say, one of the grating structure 310 and the first sensor 320 is indirectly arranged on the cutting device through the cutting frame 210 .
  • the power provided by the height adjustment motor 220 is transmitted to the cutting frame 210 through the transmission structure 230 to drive the cutting frame 210 to slide along the sliding channel 131 .
  • the cutting frame 210 is installed in the sliding channel 131 of the casing 100" here means that at least part of the cutting frame 210 is located in the sliding channel 131, along with the cutting machine As the frame 210 moves along the height adjustment direction, some parts of the cutting frame 210 may protrude from the sliding channel 131 .
  • the casing 100 includes a base 110 and a cover 120 matched with the base 110, and a support is also provided on the base 110 130, the sliding channel 131 is provided through the support 130, the cutting frame 210 can slide in the sliding channel 131, and at least partially extend out of the sliding channel 131 in the direction away from the cover 120, so that the cutting frame 210 The cutting device on it can cut lawn, vegetation and so on.
  • the casing 100 is also provided with a traveling mechanism to realize the overall movement of the mower during work.
  • the traveling mechanism includes two driving wheels and two driven wheels, and the two driving wheels can be connected by a rotating shaft; for another example, referring to Fig. 39, the traveling mechanism includes two A driving wheel and a driven wheel; in the actual implementation process, the driving wheel can be connected with the motor or the engine through the rotating shaft, and the driven wheel can be a universal wheel to realize the adjustment of the walking direction; the structures of the driving wheel and the driven wheel belong to The existing structure will not be repeated here.
  • the grating structure 310 is strip-shaped, and the hollowed-out parts 311 and the blocking parts 312 of the grating structure 310 are alternately arranged along the height adjustment direction.
  • the grating structure 310 is disposed on the cutting frame 210
  • the first sensor 320 is disposed on the casing 100 .
  • the first signal receiver 321 and the first signal transmitter 322 of the first sensor 320 are correspondingly distributed on both sides of the grating structure 310 .
  • the dimensions of the plurality of hollow parts 311 and the blocking parts 312 in the grating structure are the same.
  • the dimensions of the hollow part 311 and the blocking part 312 along the height adjustment direction are equal, and the size of the hollow part 311 or the blocking part 312 along the height adjustment direction is equivalent to half a cycle height 1/2h.
  • the cutting frame 210 moves along the height adjustment direction. Since the grating structure 310 is arranged on the cutting frame 210, the grating structure 310 will also move along the height adjustment direction along with the cutting frame 210.
  • the grating structure 310 is strip-shaped, and the hollowed out parts 311 and the blocking parts 312 of the grating structure 310 are arranged alternately along the height adjustment direction.
  • Cloth wherein the grating structure 310 is disposed on the casing 100 , and the first sensor 320 is disposed on the cutting frame 210 .
  • the first signal receiver 321 and the first signal transmitter 322 of the first sensor 320 are still correspondingly distributed on both sides of the grating structure.
  • This kind of structure can also realize the measurement of the actual height adjustment distance.
  • the number of the first sensors 320 is two, and the two first sensors 320 are arranged along the length direction of the grating structure 310 . It should be known that no matter whether the first sensor 320 is arranged on the cutting frame 210 or on the casing 100, when there are two or more first sensors 320, and each first sensor 320 is distributed along the height adjustment direction, compared with using The way of single first sensor 320, this way of using two or two first sensors 320 is beneficial to data noise reduction, that is to say, when the height adjustment is completed, if one of the first sensors is located in the hollow part 311 and the barrier In the vicinity of the intersection of section 312, due to vibration and other reasons, wrong data may be collected, and if at least two first sensors are provided, relatively more accurate data can be obtained from the data collected by another first sensor , which is conducive to more precise control of the height adjustment distance.
  • the grating structure 310 is disc-shaped, the grating structure 310 is connected to the height-adjusting motor 220 and rotates with the height-adjusting motor, and the grating Each hollow part 311 and each barrier part 312 of the structure 310 are alternately and evenly distributed on the grating structure.
  • the height adjustment motor 220 is also connected with the transmission structure 230 .
  • the number of trigger signals is n.
  • the height-adjustment distance corresponding to the circle is h 0 , and the relational formula for obtaining the actual height-adjustment distance according to the number of received signal interruptions is as follows:
  • the height adjustment mechanism is also correspondingly provided with a height adjustment limiting structure 400 for limiting the minimum cutting height and the maximum cutting height of the cutting device.
  • the height-adjusting limit structure 400 includes a light-blocking sheet 440 and a second sensor 450, and the light-blocking sheet 440 includes an intercepting portion at the highest cutting height. 441, an intercepting portion 441 at the lowest cutting height and a hollow portion 442 between the two intercepting portions 441, the intercepting portion 441 is used to block the signal of the second sensor 450; the implementation corresponding to Fig. 10 to Fig. 16
  • the light blocking sheet 440 is disposed on the cutting frame 210
  • the second sensor 450 is disposed on the casing 100 .
  • the light blocking sheet 440 can also be disposed on the casing 100
  • the second sensor 450 is disposed on the cutting frame 210 .
  • a mounting plate 460 is disposed on the support 130 of the casing 100, the second sensor 450 is disposed on the mounting plate 460, the first sensor 320 is also disposed on the mounting plate 460, and the grating
  • the structure 310 and the light blocking sheet 440 are arranged on the cutting frame 210, and the grating structure 310 adopts the strip-shaped grating structure in the above-mentioned embodiment.
  • the second sensor 450 is on the same level as the first sensor 320 located on the mounting plate 460 close to the bottom wall of the support 130 .
  • the second sensor 450 can be a photogate sensor, and the second sensor 450 includes components such as a second signal transmitter 451 and a second signal receiver 452, and the second signal transmitter 451 and the second signal receiver 452 are in phase. Symmetrically arranged, there is a certain gap between the second signal transmitter 451 and the second signal receiver 452 for placing the light blocking sheet 440; the light blocking sheet 440 is fixed on the cutting frame 210, and the length of the light blocking sheet 440 The direction is arranged along the sliding direction of the cutting frame 210.
  • the light blocking sheet 440 is formed with a hollow part 442 for passing signals and an intercepting part 441 for blocking signals. Further, the intercepting part 441 is located at the length direction of the light blocking sheet 440. Both ends, and the length dimension of the hollow part 442 on the light blocking sheet 440 is the same as the sum of the lengths of all the hollow parts 311 and the blocking parts 312 in the grating structure 310 .
  • the height adjustment limit structure 400 includes a micro switch 410 and a trigger 420 for triggering the micro switch 410; wherein, the micro The trigger switch 410 is arranged on the cutting frame 210, and the trigger 420 is arranged on the casing 100.
  • the trigger 420 triggers the micro Switch 410 is activated, and the height-adjusting motor 220 stops.
  • the trigger 420 is disposed on the support 130 , so that the trigger 420 is indirectly disposed on the casing.
  • This kind of structure can limit the extreme position of the height of the cutting frame 210 from the ground, and has a protective effect on the entire height adjustment device. Moreover, this height adjustment limit structure 400 is simpler in structure and lower in cost than the clutch limit method. Low.
  • the micro switch 410 may also be arranged on the casing 100 , and the trigger 420 may be arranged on the cutting frame 210 .
  • the trigger 420 includes a trigger body 421, a high trigger portion 423 protruding from the trigger body 421, a low trigger portion 422 protruding from the trigger body 421, the high trigger
  • the part 423 and the low trigger part 422 are arranged at intervals along the height direction, and an escape space 420 a is formed between the high trigger part 423 and the low trigger part 422 .
  • the microswitch 410 moves with the cutting frame 210 to a position corresponding to the avoidance space 420a, the microswitch 410 and the trigger member 420 are separated from each other without contacting each other. 410 is in the non-triggered state, and the height adjustment motor 220 continues to drive the cutting frame 210 to adjust the height.
  • the high position trigger part 423 contacts and triggers the micro switch 410, and the height adjustment motor 220 stops running; when the cutting frame 210 is at the lowest height from the ground position, the low position trigger part 422 contacts and triggers the micro switch 410, and the height adjustment motor 220 stops running.
  • the high triggering part 423 is provided with a high triggering surface facing the micro switch 410
  • the low triggering part 422 is provided with a low triggering surface facing the micro switch 410
  • the The trigger body 421 is provided with a separation surface facing the avoidance space 420a
  • the separation surface and the micro switch 410 are separated by the avoidance space 420a
  • the high-position trigger surface and the separation surface are transitioned through a first transition slope
  • the transition between the low trigger surface and the spacer surface is through a second transition slope.
  • the support 130 is provided with a first limiting groove 134, the bottom of the triggering piece 420 is inserted into the first limiting groove 134, and the upper end of the triggering piece 420
  • An elastic clamping arm 424 is provided, and the support 130 is provided with a clamping slot for the elastic clamping arm 424 to be clamped into.
  • the trigger piece 420 When disassembling the trigger piece 420, the trigger piece 420 can be taken out from the first limiting groove 134 only by pulling the elastic engaging arm 424 out of the slot, so that the whole trigger piece 420 can be removed from the support 130; At 420, it is only necessary to insert the bottom of the trigger member 420 into the first limiting slot 134, and snap the elastic clamping arm 424 into the slot to complete the installation.
  • the support 130 is provided with a limit vertical plate 132, the limit vertical plate 132 blocks the side of the trigger 420 facing away from the micro switch 410, the limit A clamping plate 133 is arranged on the top of the positioning vertical plate 132, the clamping groove is formed between the bottom of the clamping plate 133 and the top of the limiting vertical plate 132, and the end of the elastic clamping arm 424 is provided with a second A limiting portion 424a, the elastic locking arm 424 passes through the locking slot, and the clamping plate 133 locks the first limiting portion 424a.
  • the clamping plate 133 is parallel to the limit vertical plate 132 and is located outside the limit vertical plate 132 .
  • the cutting frame 210 is located on the limit vertical plate 132 inside.
  • the height position limiting assembly further includes a mounting seat 430 connected to the cutting frame 210, and the micro switch 410 is detachably mounted on the mounting seat 430 .
  • the mounting base 430 is provided with a socket cavity 430a and an elastic clamp arm 431
  • the micro switch 410 is disposed in the socket cavity 430a
  • the elastic clamp arm 431 is provided with a The second limiting portion 431a that limits the micro switch 410 in the insertion cavity 430a.
  • Such a structure can realize quick disassembly and assembly of the micro switch 410 .
  • two elastic clamping arms 431 are arranged symmetrically on the mounting seat 430, and the second limiting part 431a is provided with two positions to facilitate the micro switch 410 to squeeze into the two places.
  • the guide slope between the elastic clamp arms 431 .
  • the micro switch 410 includes a micro switch body 411 and a shrapnel 412 arranged on the micro switch body 411, and the mount 430 is provided with a The opening 430b connected to the socket cavity 430a, one end of the elastic piece 412 is connected with the micro switch body 411, and the other end protrudes from the opening 430b, and is connected with a trigger roller 413, when the trigger piece 420 squeezes the When the roller 413 is triggered, the micro switch 410 is triggered by the elastic piece 412 .
  • any of the above-mentioned induction components and any height-adjusting limit structure can be applied to a lawn mower whose cutting device is raised relative to the casing.
  • Neither the example nor the example corresponding to Figure 33- Figure 39 shows any sensing components and height-adjusting limit structures, but with a little modification, the sensing components and height-adjusting limit structures can also be applied to these examples to realize mowing Precise adjustment of height.
  • the transmission structure 230 includes a transmission rod 233 and a transmission part 234, and the transmission rod 233 can be driven to rotate by the height adjustment motor 220; the transmission part 234 is set On the cutting frame 210, the transmission part 234 is provided with a screw hole 234a, wherein the transmission rod 233 is passed through the screw hole 234a, and threadedly engaged with the screw hole 234a.
  • the transmission structure 230 of such a structure can make each rotation power output by the height adjustment motor 220 correspond to a relatively small height adjustment distance of the cutting frame 210 , and more precise control of the height adjustment distance can be realized.
  • the transmission structure 230 also includes a driving gear 231 and a driven gear 232, the driving gear 231 is connected to the height adjustment motor 220; the driven gear 232 is fixed coaxially with the transmission rod 233; Wherein, the driven gear 232 meshes with the driving gear 231 . It should be noted that, when the number of teeth of the driven gear 232 is greater than that of the driving gear 231 , the accuracy of height adjustment distance control can be further improved.
  • the mower further includes a shock absorbing mechanism 500 and a guiding mechanism 600, the guiding mechanism 600 is connected with the shock absorbing mechanism 500, and the guiding mechanism 600 is connected with the shock absorbing mechanism 500 Relative sliding can occur along the height adjustment direction of the cutting frame 210 to realize height adjustment guidance.
  • One of the shock absorbing mechanism 500 and the guiding mechanism 600 is installed on the cutting frame 210 , and the other is installed on the casing 100 .
  • the shock absorbing mechanism 500 includes a shock absorbing seat 510 and a first elastic deformation portion 520 and a second elastic deformation portion 530 disposed on the shock absorbing seat 510 .
  • the first elastic deformation part 520 elastically resists the guide mechanism 600 to limit the cutting frame 210 from swinging and tilting relative to the height adjustment direction; the second elastic deformation part 530 elastically resists the guiding mechanism 600 to limit the cutting frame 210 in Shake in the radial direction.
  • the cutting frame 210 is provided with an installation groove 211 , the guide mechanism 600 is installed in the installation groove 211 , and the shock absorbing mechanism 500 is installed on the casing 100 ;
  • the shock absorbing mechanism 500 is installed in the installation groove 211
  • the guiding mechanism 600 is installed on the casing 100 .
  • the shock absorbing mechanism 500 and the guiding mechanism 600 may be made of metal materials, such as aluminum profiles.
  • the guide mechanism 600 includes a guide seat 610, on which two guide plates 620 are oppositely arranged, and between the two guide plates 620 is formed a The first elastic deformation part 520 of the shock absorbing mechanism 500 protrudes into the guide groove 640 and abuts against the inner wall of the guide plate 620 .
  • the relative sliding between the guiding mechanism 600 and the shock absorbing mechanism 500 can be realized, and the height adjustment guidance can be realized to prevent the cutting frame 210 from swinging and tilting in the height adjustment direction, so as to avoid the cutting frame 210 from tilting and vibrating during work, and to avoid vibration caused by vibration. And produce noise.
  • the first elastic deformation part 520 includes two first elastic plates 521 oppositely arranged, and the first elastic plates 521 One end of the first elastic plate 521 is connected to the shock-absorbing seat 510 , and the other end is a free end. The free end of the first elastic plate 521 extends into the guide groove 640 and abuts against the inner wall of the guide plate 620 outward.
  • the free end of the first elastic plate 521 is provided with a first protrusion protruding toward the direction where the guide plate 620 is located.
  • the first protrusion 5211 has an arc-shaped surface in contact with the inner wall of the guide plate 620 .
  • the protruding direction of the first protrusion 5211 faces the inner wall of the guide plate 620, so that the first protrusion 5211 entering the guide groove 640 can elastically abut against the inner wall of the corresponding guide plate 620, avoiding swinging and tilting due to gaps ; and through arc surface contact, not only is it beneficial for the relative sliding between the first protrusion 5211 and the guide plate 620, but also avoid damage to the inner wall of the guide plate 620 during the sliding process, prolonging the service life.
  • the first elastic plate 521 may be vertically arranged on the shock-absorbing seat 510 .
  • the first elastic plate 521 can also be arranged obliquely on the shock absorbing seat 510, and the first elastic plate 521 and The included angle formed between the shock-absorbing seats 510 is greater than 90°, so that the distance between the two first elastic plates 521 gradually increases from one end close to the shock-absorbing seat 510 to one end away from the shock-absorbing seat 510 .
  • the cross-section of the channel formed between the two first elastic plates 521 is bell-shaped.
  • At least one end of the shock-absorbing seat 510 is provided with a connecting plate, and the connecting plate protrudes from the shock-absorbing seat 510 toward the guide mechanism 600 and the second elastic deformation portion 530 protrudes from the end of the connection plate, so as to prevent the second elastic deformation portion 530 from elastically contacting the limiting portion 630 due to the interference of the connection plate.
  • the shock-absorbing seat 510 When the shock-absorbing seat 510 is installed on the cutting frame 210 or on the base 110 , it can be connected with the connecting plate through a locking member, so that the shock-absorbing seat 510 is fixed on the cutting frame 210 or the base 110 .
  • the shock absorber 510 is installed on the base 110 .
  • the connecting plate and the shock absorbing seat 510 can be integrally formed.
  • the side of the guide plate 620 close to the shock absorbing mechanism 500 is provided with a guide surface for guiding the first elastic deformation part 520 to extend into the guide groove 640 621.
  • the guide surface 621 may be an arc-shaped surface, which facilitates guiding the first elastic deformation portion 520 to slide into the guide groove 640 along the guide surface 621 .
  • the guide surface 621 can also be an inclined surface, and the cross-section of the channel formed by the guide surfaces on the two guide plates 620 is bell-shaped, close to The width of the opening 430b at one end of the guide seat 610 is smaller than the width of the opening 430b at the end away from the guide seat 610 .
  • the guide seat 610 is provided with a limit portion 630 protruding toward the shock absorbing mechanism 500, and the limit portion 630 is located on the two guide plates Between 620, the second elastic deformation part 530 of the shock absorbing mechanism 500 abuts against the limiting part 630 along the radial direction of the cutting frame 210, preventing the cutting frame 210 from shaking in the radial direction and avoiding noise generated by vibration.
  • the second elastic deformation part 530 can also directly abut against the guide seat 610 in the radial direction of the cutting frame 210, that is, the second elastic deformation part 530 is directly elastically connected to the groove bottom of the guide groove 640. To abut against, to prevent the cutting frame 210 from shaking in the radial direction, and to avoid noise generated by vibration.
  • the second elastic deformation part 530 includes two oppositely disposed second elastic plates 531, and the first ends of the second elastic plates 531 are connected to The shock-absorbing seat 510 is connected, and the other end is suspended in the air, and is bent relative to the first end of the second elastic plate 531 , and the suspended end of the second elastic plate 531 abuts against the limiting portion 630 .
  • the bending directions of the two second elastic plates 531 are opposite or opposite, and the two elastic plates are distributed symmetrically. Referring to FIG. 30 , in this embodiment, the bending directions of the two second elastic plates 531 are opposite.
  • the first end of the second elastic plate 531 is perpendicular to the shock-absorbing seat 510 , and the second end of the second elastic plate 531 is bent in an arc shape.
  • the shock-absorbing seat 510 is also provided with a slot 511 passing through the shock-absorbing seat 510, and the slot 511 is located on the two second elastic plates 531 Between the first ends of the first ends, the slot 511 is provided to improve the deformability of the second elastic plate 531 , so that the second elastic plate 531 elastically contacts with the limiting portion 630 .
  • the slot 511 may also be a blind slot, or in other embodiments, the slot 511 may not be provided.
  • the dangling end of the second elastic plate 531 is provided with a second protrusion protruding toward the direction of the stopper 630 .
  • the second protrusion 5311 has an arc-shaped surface in contact with the limiting portion 630 .
  • the protruding direction of the second protrusion 5311 is toward the limiting portion 630, so that the arc-shaped surface of the second protrusion 5311 elastically abuts against the limiting portion 630, which not only ensures the stability of the contact, but also avoids shaking due to gaps. It also avoids damage to the limiting portion 630 during the sliding process.
  • the second protrusion 5311 can be a cylinder, a half cylinder or a three-quarter cylinder, wherein the second protrusion The arc surface of 5311 is in elastic contact with the limiting part 630 .
  • the cross-sectional width of the second protrusion 5311 is greater than the cross-sectional width of the second end of the second elastic plate 531, which is beneficial to ensure that the second protrusion 5311 is in contact with the limiting portion 6303, and avoids other parts of the second end of the second elastic plate 531 contact with the stopper 630 .
  • the number of the second elastic plate 531 can also be one, the two ends of the second elastic plate 531 are connected with the shock absorbing seat 510, and the position between the two ends of the second elastic plate 531 faces The direction away from the shock-absorbing seat 510 is arched, and can elastically resist against the limiting portion 630 .
  • the limiting portion 630 is formed by arching the guide seat 610 toward the direction of the shock absorbing mechanism 500 .
  • the section of the limiting portion 630 is U-shaped.
  • the guide mechanism 600 is installed in the installation groove 211 , and the shock absorbing mechanism 500 is installed on the base 110 of the casing 100 .
  • a first connection portion 650 is disposed on the guide base 610, and the first connection portion 650 is connected to the cutting frame 210 through fasteners.
  • the fasteners can be screws or bolts.
  • the first end of the first connecting portion 650 is connected to the side of the guide seat 610 facing away from the shock absorbing mechanism 500 , and the first connecting portion 650 A ring is protruded from the second end of the second end, and the ring can be a closed ring or an open ring with an opening 430b.
  • the circular ring is an open circular ring with an opening 430b.
  • the limiting portion 630 is recessed on the side facing the installation groove 211 to form a receiving space, and the first connecting portion 650 can be set in within the containment space.
  • the first connecting portion 650 does not protrude from the receiving space, that is, the first connecting portion 650 does not touch the bottom of the installation groove 211.
  • the guide seat 610 is directly attached to the bottom of the installation groove 211 for assembly. More stable and precise.
  • the accommodating space runs through the guide seat 610 along the cutting height direction, so that the guide mechanism 600 can be elastically deformed under a certain force, so that the guide mechanism 600 can be installed into the installation groove 211 more simply and conveniently.
  • the guide plate 620 , the limiting portion 630 and the guide seat 610 can be integrally formed.
  • the first elastic deformation part 520, the second elastic deformation part 530 and the shock absorbing seat 510 may be integrally formed.
  • At least three sets of guide mechanisms 600 are evenly arranged along the circumferential direction on the cutting frame 210, and the shock absorbing mechanisms 500 correspond to the guide mechanisms 600 one by one.
  • the damping mechanism 500 and the guiding mechanism 600 corresponding to each other are distributed along the radial direction of the cutting frame 210 .
  • three sets of guide mechanisms 600 and three sets of shock absorbing mechanisms 500 are provided.
  • the three sets of guide mechanisms 600 are evenly distributed along the circumference of the cutting frame 210 and installed on In the installation groove 211 , three sets of damping mechanisms 500 are evenly distributed along the circumferential direction of the cutting frame 210 , and are slidably matched with the guiding mechanisms 600 one by one.
  • the height adjustment mechanism includes a height adjustment motor 220, a cutting frame 210, and a height adjustment drum 250; the height adjustment motor 220 is fixed on the casing 100; The frame 210 is installed in the sliding channel 131 of the casing 100, and the cutting device is arranged on the cutting frame 210 and moves with the cutting frame 210; the height adjustment drum 250 is connected with the height adjustment motor 220 , and the height-adjusting drum 250 is socketed with the cutting frame 210; wherein, a spiral guide structure is provided between the cutting frame 210 and the height-adjusting drum 250, and spirally ascends in the axial direction, When the height adjustment motor 220 drives the height adjustment drum 250 to rotate in the first direction, the height adjustment drum 250 drives the cutting frame 210 to slide axially along the sliding channel.
  • the height-adjustment motor 220 drives the height-adjustment drum 250 to rotate in the first direction, after the cutting frame 210 slides and rises beyond the highest position, the cutting frame 210 descends to the lowest position. Then, during height adjustment, the height adjustment drum 250 is always controlled to rotate in the first direction, and the height adjustment motor 220 can be adjusted to any position.
  • the height-adjusting motor 220 is directly connected to the height-adjusting drum 250; in actual implementation, the height-adjusting motor 220 can also be indirectly connected to the height-adjusting drum 250 through a reduction mechanism , can be considered according to demand whether to set a deceleration mechanism, the deceleration mechanism can use a gear box to adjust the output speed and torque, so that the power is transmitted to the height-adjusting drum 250 after the motor output speed is adjusted.
  • the housing 100 is provided with a guide 140, the sliding channel is formed in the guide 140, and the guide 140 and An anti-rotation guide structure is provided between the height-adjustment drum 250, and a one-way locking member 160 is also provided between the guide member 140 and the casing 100, and the one-way locking member 160 has an unlocked state and a locked state. state.
  • the guide member 140 When the height-adjusting drum 250 rotates in the first direction, the one-way locking member 160 is in a locked state, the guide member 140 is relatively fixed to the casing 100, and the cutting frame 210 moves along the slide The shift channel slides axially; when the height-adjusting drum 250 rotates to the second direction, the one-way locking member 160 is in an unlocked state, the guide member 140 can rotate relative to the casing 100, and the cutting machine The frame 210 and the guide 140 rotate with the cutting frame 210 at the same time.
  • first direction is one of clockwise or counterclockwise
  • second direction is the other of clockwise and counterclockwise.
  • the one-way locking member 160 can restrict the rotation of the guide member 140 to the first direction, and the guide member 140 can only rotate to the second direction. Since the cutting frame 210 and the guide member 140 rotate together, the The cutting frame 210 rotates in the first direction, and the cutting frame 210 can only rotate in the second direction.
  • the cutting action and the height adjustment action share the same height adjustment motor 220, that is, the selection of the cutting action and the height adjustment action can be realized by controlling the height adjustment motor 220 to rotate in the opposite direction, which reduces product costs and saves
  • the height-mowing system takes up less space, and has the advantages of simple structure and convenient operation.
  • the one-way locking member 160 includes an inner ring part and an outer ring part, the inner ring part is fixed to the outer wall of the guide part 140 , and the outer ring part is used to be fixed on the casing 100 .
  • the one-way locking member 160 may adopt a one-way bearing, the inner ring of the one-way bearing is fixed to the guide member 140 , and the outer ring of the one-way bearing is used to be fixed to the casing 100 .
  • Such a structure can prevent the guide member 140 from rotating in the first direction, and allow the guide member 140 to rotate in the second direction.
  • the helical guide structure includes pawls 2121 arranged on the height-adjusting drum 250 and on the cutting frame 210;
  • the ratchet 252 ascends spirally along the axial direction of the height-adjusting drum 250; the pawl 2121 cooperates with the ratchet 252;
  • the height-adjusting motor 220 drives the height-adjusting drum 250 to rotate in the first direction, the The pawl 2121 climbs along the helical direction of the ratchet 252 so that the cutting frame 210 rises along its axial direction;
  • the height-adjusting motor 220 drives the height-adjusting drum 250 to rotate in the second direction, the The ratchets 252 are engaged to rotate the cutting frame 210 in the second direction.
  • the cutting frame 210 can be adjusted in height or cut in rotation according to different needs.
  • the pawl 2121 when the pawl 2121 climbs to the top along the helical direction of the ratchet 252 , the pawl 2121 breaks away from the top of the ratchet 252 and falls back to the bottom of the ratchet 252 .
  • This structure ensures that the cutting machine frame 210 can automatically return to the initial position after being adjusted to the limit height, and the height adjustment operation can be repeated when it needs to be adjusted next time.
  • the pawls 2121 are disposed on the inner wall of the cutting frame 210 , and there are at least two pawls 2121 arranged circumferentially along the inner wall of the cutting frame 210 .
  • two pawls 2121 are arranged oppositely along the inner wall of the cutting frame 210 in the circumferential direction. In this way, it can play a role of balance adjustment, ensure that the cutting frame 210 moves up smoothly with the ratchet 2121 , and ensure the stability and reliability of the height adjustment operation.
  • the anti-rotation guide structure since the anti-rotation guide structure is provided between the guide piece 140 and the cutting frame 210 , the cutting frame 210 can only slide relative to the guide piece 140 without relative rotation.
  • the anti-rotation guide structure includes: a limiting edge 2131 and a second limiting groove 141, the limiting edge 2131 is arranged on the outer wall of the cutting frame 210 in the axial direction, and the second limiting groove 141 is axially disposed on the inner wall of the guide member 140 , and the second limiting groove 141 cooperates with the limiting edge 2131 .
  • This kind of structure ensures that the cutting frame 210 can slide up and down along the second limiting groove 141 of the guide 140 through the limiting edge 2131 clamped in the second limiting groove 141, and at the same time, prevents the cutting frame 210 from contacting the guide. Circumferential rotation takes place between 140.
  • a plurality of limiting ribs 2131 are arranged along the circumferential direction of the cutting frame 210; a plurality of second limiting grooves 141 are arranged along the circumferential direction of the guide member 140, and the The second limiting groove 141 corresponds to the limiting edge 2131 one by one.
  • Such a structure ensures that the cutting machine frame 210 can maintain a smooth sliding process along the axial direction in the guide member 140, thereby ensuring the stability and reliability of the height adjustment operation.
  • four limiting ribs 2131 are evenly distributed along the circumferential direction of the cutting frame 210
  • four second limiting grooves 141 are evenly distributed along the circumferential direction of the guide member 140 .
  • the limiting edge 2131 may be disposed on the inner wall of the guide member 140 , and correspondingly, the second limiting groove 141 may be disposed on the outer wall of the cutting frame 210 .
  • the anti-rotation guiding structure can also be set in other structural forms, as long as it can play the role of circumferential anti-rotation and axial guidance.
  • the height-adjusting drum 250 includes: a cylinder body 251 and a limit plate 253, the interior of the cylinder body 251 is hollow, and the ratchet 252 is arranged on the cylinder body 251 on the outer wall; the limit disc 253 is connected to the end of the cylinder 251, the outer diameter of the limit disc 253 is larger than the outer diameter of the cylinder 251, and the end of the ratchet 252 extends to the limit disc 253.
  • the top end of the cylinder body 251 is open so that the height-adjusting motor 220 can be placed in the cylinder body 251 ; the limit plate 253 at the end of the cylinder body 251 is used to limit the axial position of the cutting frame 210 .
  • the bottom of the limit plate 253 is provided with a second connection portion 254 for connecting the height adjustment motor 220, the height adjustment motor 220 is arranged in the height adjustment drum 250, and the height adjustment The output shaft of the high motor 220 is connected to the second connection part 254 .
  • the second connecting portion 254 has a cylindrical structure, and a connecting hole is opened inside the second connecting portion 254 along its axial direction, and the output shaft of the height-adjusting motor 220 is installed in the connecting hole. In this way, an installation space can be provided for the height adjustment motor 220 without occupying external space.
  • the interior of the cutting frame 210 is hollow for placing the height adjustment drum 250
  • the cutting frame 210 includes: a first shaft section 212 , and the pawl 2121 Set on the inner wall of the first shaft section 212; and a second shaft section 213, the second shaft section 213 is connected to the end of the first shaft section 212, and the diameter of the second shaft section 213 is larger than the first shaft
  • the diameter of the segment 212 there is a limit step between the second shaft segment 213 and the first shaft segment 212, and the limit plate 253 of the height adjustment drum 250 cooperates with the limit step to limit.
  • the first shaft section 212 and the second shaft section 213 are integrally formed, and when the cutting frame 210 is assembled with the height adjustment drum 250, the limiting step and the limiting plate 253 can function as an axial limit. position, thereby ensuring the axial position when the cutting frame 210 descends to the initial position.
  • the ratchet 2121 is close to the limit step. At the initial position, the ratchet 2121 begins to climb from the bottom end of the ratchet 252; the limit edge 2131 is arranged on the outer wall of the second shaft section 213, and the second shaft section 213 is on the guide member Slide back and forth in 140.
  • the cutting tool 820 is a cutting disc
  • the cutting disc is connected to the bottom of the cutting frame 210
  • a plurality of cutting knives 821 are arranged on the cutting disc along the circumferential direction.
  • three cutting knives 821 are evenly distributed in the axial direction on the cutting disc, and the heads of the cutting knives 821 protrude from the outer edge of the cutting disc.
  • the cutting operation is realized by driving the movement of the cutting disc through the height-adjusting motor 220 . Since the cutting frame 210 is connected to the cutting disc, the height of the cutting disc from the ground can be adjusted by adjusting the height of the cutting frame 210 .
  • the specific operation process of the lawn mower corresponding to the embodiment is as follows: when the height adjustment operation is required, the height adjustment motor 220 is controlled to drive the height adjustment drum 250 to rotate in the first direction, and at this time, the one-way locking Part 160 is in a locked state, which will prevent the guide 140 and the cutting frame 210 from rotating in the first direction, so that the ratchet 2121 climbs up along the helical direction of the ratchet 252, and the anti-rotation between the cutting frame 210 and the guide 140
  • the guide structure enables the cutting frame 210 and the guide 140 to only slide axially without relative rotation, so that the cutting frame 210 rises together with the pawl 2121 to realize the function of height adjustment; when cutting operations are required, Control the height adjustment motor 220 to drive the height adjustment drum 250 to rotate in the second direction, and the second direction is opposite to the first direction.
  • the locking member 160 is now in an unlocked state, so that the cutting frame 210 and the height adjustment roller rotate together, and the rotation
  • the lawn mower with this structure controls the height adjustment operation and cutting operation through the control unit according to different working conditions.
  • the height adjustment motor 220 is controlled to drive the height adjustment drum 250 to the first direction. Rotate to make the cutting frame 210 rise along its axial direction; when performing cutting operations, control the height-adjusting motor 220 to drive the height-adjusting drum 250 to rotate in the second direction, so that the cutting frame 210 rotates in the second direction.
  • it can be realized by remote control, or through the electric control panel that comes with the device.
  • the present invention provides a method for height adjustment of a lawn mower.
  • the described height adjustment method includes:
  • the height adjustment method further includes S500: when the height adjustment motor 220 stops running, record and store the current position of the height adjustment motor 220, and use the current position as the relative position of the next height adjustment. initial position.
  • a height adjustment method is provided, which is suitable for the above-mentioned lawn mower provided with the micro switch 410 and the trigger 420.
  • the height adjustment method further includes S610: when the trigger 420 triggers the micro switch When the switch 410 is turned on, the height-adjusting motor 220 is controlled to stop running, and the cutting device reaches the lowest cutting position or the highest cutting position at this time.
  • a height adjustment method is provided, which is suitable for the lawn mower provided with the light blocking sheet 440 and the second sensor 450, and the height adjustment method further includes S620: when the light blocking sheet 440 blocks When the second signal of the second sensor 450 is transmitted, the height-adjusting electrode is controlled to stop running, and at this time the cutting device reaches the lowest cutting position or the highest cutting position, wherein the second sensor 450 is a photogate sensor.
  • the height adjustment method further includes S700: when the trigger member 420 triggers the micro switch 410 or when the light blocking sheet 440 blocks the second signal transmission of the second sensor 450 , store the current position of the height adjustment motor 220, and use the current position as the absolute initial position for height adjustment.
  • the height adjustment method further includes: each time when the height is adjusted, after the height adjustment motor 220 is started, firstly control the height adjustment motor 220 to run, so that the trigger 420 triggers the micro switch 410 or make the light-blocking sheet 440 block the second signal transmission of the second sensor 450, turn up the motor 220 and stop, and keep the current position as the absolute initial position; then start measuring with the absolute initial position as the base point
  • the first signal receiver 321 receives the number of times the first signal is interrupted, and obtains the actual elevation adjustment distance.
  • the present invention judges the actual height adjustment distance by the number of times the first signal receiver 321 receives signal interruptions.
  • the height adjustment motor 220 is controlled to stop running without manual height adjustment. It is beneficial to realize remote control; and the height adjustment motor 220 is protected by using the height adjustment limit structure 400, which improves the reliability and safety of the height adjustment.

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Abstract

提供一种割草机及割草机的调高方法。割草机包括:机壳(100)、设置在机壳(100)上的切割装置、调高机构(200)、感应组件(300)和控制单元。其中调高机构(200)能够驱动切割装置相对机壳(100)沿调高方向移动;感应组件(300)具有相对应的光栅结构(310)和第一传感器(320),光栅结构(310)包括交替分布的多个镂空部(311)和多个阻隔部(312),第一传感器(320)包括第一信号接收器(321)和第一信号发射器(322),光栅结构(310)和第一传感器(320)的其中之一直接或间接的设置于切割装置上;控制单元根据第一信号被阻隔的次数控制调高机构(200)调高。通过调高机构(200)调节切割机架(210)的离地高度,利用感应组件(300)中光栅机构(310)周期性的阻隔第一传感器(320)的信号,能够根据信号中断的次数能够获取实际调高距离,实现对调高距离自动且精准的控制。

Description

割草机及割草机的调高方法 技术领域
本发明涉及割草技术领域,尤其涉及割草机及割草机的调高方法。
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。
现有的割草机多采用纯机械结构的手动调高装置来实现割草高度调节,需要手动调节割草高度,影响用户体验,不够智能化;也有出现了自动调高的割草机,但现有自动调高装置结构复杂,成本高。
发明内容
有鉴于此,本发明的主要目的在于提供一种割草机及割草机的调高方法,提供一种新的方式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。
为实现上述目的及其他相关目的,本发明提供一种割草机,包括:
机壳;
切割装置,设置在所述机壳上,所述切割装置具有切割刀具;
调高机构,能够驱动所述切割装置相对所述机壳沿调高方向移动;
感应组件,用于检测所述切割装置相对所述机壳沿调高方向移动的调高距离,所述感应组件具有相对应的光栅结构和第一传感器,所述光栅结构包括交替分布的镂空部和阻隔部,所述第一传感器包括第一信号接收器和第一信号发 射器,所述第一信号发射器和所述第一信号接收器之间的第一信号在调高时被周期性的阻隔;
控制单元,根据所述第一信号被阻隔的次数控制所述调高机构调高;
其中,所述光栅结构和所述第一传感器的其中之一直接或间接的设置于切割装置上,所述光栅结构和所述第一传感器中的另一个直接或间接于机壳上。
在一些可选的实施例中,所述调高机构还包括:
切割机架,所述切割装置设置于所述切割机架上,所述切割装置还具有用于驱动所述切割刀具执行切割动作的切割电机,所述切割机架安装在所述机壳的滑移通道内;
调高电机,与所述机壳固定连接;
传动结构,连接所述调高电机与所述切割机架,所述传动结构用于将所述调高电机输出的旋转运动转换为所述切割机架沿滑移通道的线性运动,通过所述调高电机能够驱动所述切割机架以调节高度;
其中,所述光栅结构和所述第一传感器的其中之一设置于切割机架上。
在一些可选的实施例中,所述光栅结构为条状,所述光栅结构的各所述镂空部和各所述阻隔部沿调高方向交替排布,其中,所述光栅结构设置于切割机架上,所述第一传感器设置于所述机壳上。
在一些可选的实施例中,所述光栅结构为条状,所述光栅结构的各所述镂空部和各所述阻隔部沿调高方向交替排布,其中,所述光栅结构设置于机壳上,所述第一传感器的设置于所述切割机架上。
在一些可选的实施例中,所述第一传感器的数量为两个,且两个所述第一传感器沿光栅结构的长度方向设置。
在一些可选的实施例中,所述光栅结构中多个镂空部和阻隔部的尺寸相同。
在一些可选的实施例中,所述光栅结构为圆盘状上,所述光栅结构与所述调高电机连接并随调高电机转动,所述光栅结构的各所述镂空部和各所述阻隔部圆周交替均布在所述光栅结构上。
在一些可选的实施例中,所述调高机构还对应设置用于限制所述切割装置 的最低切割高度和最高切割高度的调高限位结构。
在一些可选的实施例中,所述调高限位结构包括微动开关和用于触发所述微动开关的触发件;其中,所述微动开关和所述触发件的其中之一设置在所述切割机架上,所述微动开关和所述触发件的其中之一设置在所述机壳上;
当所述切割机架调节至最高离地高度或最低离地高度时,所述触发件触发所述微动开关,所述调高电机停止。
在一些可选的实施例中,所述触发件包括触发件本体、凸设在触发件本体上的高位触发部、凸设在触发件本体上的低位触发部,所述高位触发部和所述低位触发部沿高度方向间隔布置,且所述高位触发部和所述低位触发部之间形成有避让空间;
当所述微动开关运动至与所述避让空间对应的位置时,所述微动开关与所述触发件之间间隔,所述微动开关处于非触发状态;
当所述切割机架处于最高离地高度位置时,所述高位触发部接触并触发所述微动开关;当所述切割机架处于最低离地高度位置时,所述低位触发部接触并触发所述微动开关。
在一些可选的实施例中,所述高位触发部上设置有朝向所述微动开关的高位触发面,所述低位触发部上设置有朝向所述微动开关的低位触发面,所述触发件本体上设置面向所述避让空间的间隔面,所述间隔面与所述微动开关被所述避让空间隔开,所述高位触发面与所述间隔面之间通过第一过渡斜面过渡,所述低位触发面与所述间隔面之间通过第二过渡斜面过渡。
在一些可选的实施例中,所述机壳上设置有第一限位槽,所述触发件的底部插入所述第一限位槽内,所述触发件的上端设置有弹性卡接臂,所述机壳上设置有供所述弹性卡接臂卡入的卡槽。
在一些可选的实施例中,所述机壳上设置有限位立板,所述限位立板挡在所述触发件背对所述微动开关的一侧,所述限位立板的上方设置有卡板,所述卡板的底部与所述限位立板的顶部之间形成所述卡槽,
所述弹性卡接臂的端部设置有第一限位部,所述弹性卡接臂穿过所述卡槽, 且所述卡板卡住所述第一限位部。
在一些可选的实施例中,所述卡板与所述限位立板平行,并位于限位立板的外侧。
在一些可选的实施例中,所述高度位置限位组件还包括与所述切割机架连接的安装座,所述微动开关可拆卸地安装在所述安装座上。
在一些可选的实施例中,所述安装座上设置有插接腔和弹性卡臂,所述微动开关设置于所述插接腔内,所述弹性卡臂上设置有用于将所述微动开关限位在所述插接腔内的第二限位部。
在一些可选的实施例中,所述调高限位结构包括挡光片和第二传感器,所述挡光片包含一个位于最高切割高度的拦截部、一个位于最低切割高度的拦截部和位于两个拦截部之间的中空部,所述拦截部用于阻隔所述第二传感器的信号;
所述挡光片和第二传感器的其中之一设置于所述切割机架上,所述挡光片和第二传感器的其中之一设置于所述机壳上。
在一些可选的实施例中,所述割草机还包括:
减震机构,所述减震机构包括减震座以及设置在所述减震座上的第一弹性变形部和第二弹性变形部;
引导机构,所述引导机构与所述减震机构连接,且所述引导机构与所述减震机构能够沿所述切割机架的调高方向发生相对滑动;所述减震机构和所述引导机构中的其中一个安装在所述切割机架上,另一个安装在所述机壳上;
其中,所述第一弹性变形部与所述引导机构弹性相抵,以限制所述切割机架相对于调高方向摆动和倾斜;所述第二弹性变形部与所述引导机构弹性相抵,以限制所述切割机架在径向方向晃动。
在一些可选的实施例中,所述切割机架上设有安装槽,所述引导机构安装在所述安装槽内,所述减震机构安装在所述机壳上;或者所述减震机构安装在所述安装槽内,所述引导机构安装在所述机壳上。
在一些可选的实施例中,所述引导机构包括引导座,所述引导座上相对设 置有两个引导板,两个所述引导板之间形成沿调高方向的引导槽,所述减震机构的第一弹性变形部伸入所述引导槽内,并与所述引导板的内壁相抵。
在一些可选的实施例中,所述第一弹性变形部包括两个相对设置的第一弹性板,所述第一弹性板的一端与所述减震座连接,另一端为悬空端,所述第一弹性板的悬空端伸入所述引导槽内并向外抵在所述引导板的内壁。
在一些可选的实施例中,所述第一弹性板的悬空端设置有向所述引导板所在方向凸出的第一凸起,所述第一凸起具有与所述引导板的内壁接触的弧形面。
在一些可选的实施例中,所述引导板靠近所述减震机构的一边设置有用于引导所述第一弹性变形部伸入所述引导槽的导向面。
在一些可选的实施例中,所述引导座上设置有朝向所述减震机构凸出的限位部,所述限位部位于两个所述引导板之间,所述减震机构的第二弹性变形部沿所述切割机架的径向抵在所述限位部上。
在一些可选的实施例中,所述第二弹性变形部包括两个相对设置的第二弹性板,所述第二弹性板的第一端与所述减震座连接,另一端悬空,并相对于第二弹性板的第一端弯曲,所述第二弹性板的悬空端抵在所述限位部上。
在一些可选的实施例中,两个所述第二弹性板的弯曲方向相对或者相背。
在一些可选的实施例中,所述第二弹性板的悬空端设置有向所述限位部所在方向凸出的第二凸起,所述第二凸起具有与所述限位部接触的弧形面。
在一些可选的实施例中,所述限位部由所述引导座向减震机构所在方向拱起形成。
在一些可选的实施例中,所述传动结构包括:
在一些可选的实施例中,能够被所述调高电机驱动旋转;
传动部,设置于所述切割机架上,所述传动部上设置有螺孔;
其中,所述传动杆穿设在所述螺孔内,并与所述螺孔螺纹配合。
在一些可选的实施例中,所述传动结构还包括:
主动齿轮,与所述调高电机连接;
从动齿轮,与所述传动杆同轴固定;
其中,所述从动齿轮与所述主动齿轮啮合。
在一些可选的实施例中,所述调高机构包括:
调高电机,固定在所述机壳上;
切割机架,安装在所述机壳的滑移通道内,所述切割装置设置于所述切割机架上随切割机架动作;
调高转筒,与所述调高电机连接,且所述调高转筒与所述切割机架相套接;
其中,所述切割机架与所述调高转筒之间设置有沿轴向螺旋攀升的螺旋导向结构,当所述调高电机驱动所述调高转筒向第一方向转动时,所述调高转筒带动所述切割机架沿所述滑移通道轴向滑动。
在一些可选的实施例中,当所述调高电机驱动所述调高转筒向第一方向转动时,所述切割机架滑动上升到超过最高位置后,所述切割机架下降到最低位置。
在一些可选的实施例中,所述机壳上设置有导向件,所述滑移通道形成于所述导向件内,且所述导向件与所述调高转筒之间设置有防转导向结构,所述导向件与所述机壳之间还设置有单向锁定件,所述单向锁定件具有解锁状态和锁定状态;
当所述调高转筒向第一方向转动时,所述单向锁定件处于锁定状态,所述导向件与所述机壳相对固定,所述切割机架沿所述滑移通道轴向滑动;
当所述调高转筒向第二方向转动时,所述单向锁定件处于解锁状态,所述导向件能够相对所述机壳转动,所述切割机架、所述导向件同时随切割机架转动。
在一些可选的实施例中,所述螺旋导向结构包括:
棘齿,设置于所述调高转筒上,且所述棘齿沿调高转筒的轴向螺旋攀升;
棘爪,设置于所述切割机架上,所述棘爪与所述棘齿相配合;
当所述调高电机驱动调高转筒向第一方向转动时,所述棘爪沿棘齿的螺旋方向攀升以使切割机架沿其轴向上升;
当所述调高电机驱动调高转筒向第二方向转动时,所述棘爪与棘齿相扣合 以使切割机架向第二方向转动。
在一些可选的实施例中,当所述棘爪沿棘齿的螺旋方向攀升至顶端时,所述棘爪脱离棘齿的顶端并回落至棘齿的底端。
在一些可选的实施例中,所述防转导向结构包括:
限位棱,沿轴向设置于所述切割机架的外壁上;和
第二限位槽,沿轴向设置于所述导向件的内壁上,且所述第二限位槽与限位棱配合。
在一些可选的实施例中,所述限位棱沿切割机架的周向布置;所述第二限位槽沿滑动环的周向布置,且所述第二限位槽与限位棱一一对应。
在一些可选的实施例中,所述调高转筒包括:
筒体,所述筒体的内部中空,所述棘齿设置于所述筒体的外壁上;和
限位盘,所述限位盘连接于筒体末端,所述限位盘的外径大于筒体的外径,所述棘齿的末端延伸至限位盘上。
在一些可选的实施例中,所述限位盘的底部设置有用于连接调高电机的第二连接部,所述调高电机设置于调高转筒内,且所述调高电机的输出轴连接至所述第二连接部。
在一些可选的实施例中,所述切割机架的内部中空,所述调高转筒位于切割机架内,所述切割机架包括:
第一轴段,所述棘爪设置于所述第一轴段的内壁上;和
第二轴段,所述第二轴段连接于第一轴段末端,且所述第二轴段的直径大于第一轴段的直径,所述第二轴段与第一轴段之间具有限位台阶,所述调高转筒的限位盘与所述限位台阶配合限位。
为实现上述目的及其他相关目的,本发明还提供一种割草机的调高方法,所述调高方法包括:
获取预设调高距离以及调高电机的启动信号;
控制第一信号接收器持续接收第一信号,根据接收第一信号中断的次数, 获取实际调高距离;
若所述实际调高距离达到所述预设调高距离,则停止所述调高电机。
可选的,当所述调高电机停止运转时,存储调高电机的当前位置,并将当前位置作为下一次高度调节的相对初始位置。
可选的,所述调高方法还包括:
当触发件触发微动开关时,控制调高电机停止运转,且此时切割装置达到最低切割位置或者最高切割位置。
可选的,所述调高方法还包括:
当挡光片阻隔第二传感器的第二信号传输时,控制所述调高电极停止运转,且此时切割装置达到最低切割位置或者最高切割位置,其中,所述第二传感器为光电门传感器。
可选的,所述调高方法还包括:
当所述触发件触发所述微动开关或当所述挡光片阻隔所述第二传感器的第二信号传输时,存储调高电机的当前位置,并将当前位置作为高度调节的绝对初始位置。
可选的,所述调高方法还包括:每次调高时,待调高电机启动后,
先控制调高电机运转,使所述触发件触发所述微动开关或使所述挡光片阻隔所述第二传感器的第二信号传输,调高电机停转,并保持当前位置为绝对初始位置;
再以所述绝对初始位置为基点,开始计量第一信号接收器接收第一信号被中断的次数,获取实际调高距离。
如上所述,本发明提供的一种割草机及割草机的调高方法,通过调高机构调节切割机架的离地高度,利用感应组件中光栅机构周期性的阻隔第一传感器的信号,能够根据信号中断的次数能够获取实际调高距离,不仅能实现自动调高,且能够实现对调高距离的精准控制。
附图说明
图1显示为本发明的割草机的一示例性的整体结构示意图;
图2显示为图1的割草机拆下盖体后的结构示意图;
图3显示为本发明的割草机于一实施例中支架、调高机构及切割机架的俯视图;
图4显示为图3的爆炸示意图;
图5显示为图3的局部立体结构示意图;
图6显示为图3中支架的结构示意图;
图7显示为图3中切割机架、传动结构及第一传感器的结构示意图;
图8为图6中局部A的放大图;
图9为图7中局部B的放大图;
图10显示为本发明的割草机于另一实施例中支架、调高机构及切割机架的结构示意图;
图11显示为与图10相同的支架、调高机构及切割机架的结构示意图;
图12显示为图10在另一视角下的示意图;
图13显示为图10中切割机架的结构示意图;
图14为图11中局部C的放大图;
图15显示为图10中的感应组件、调高限位结构及切割机架的装配图;
图16显示为图10中第一传感器和第二传感器的安装位置示意图;
图17显示为本发明的割草机与再一实施例中支架、调高机构及切割机架的结构示意图;
图18对应图17中切割机架处于最低离地高度位置时的结构示意图;
图19对应图17中为本发明实施例在切割机架处于最高离地高度位置时的结构示意图;
图20显示为图18中光栅结构的结构示意图;
图21显示为图17对应的整体剖视图;
图22显示为图18中触发件的结构示意图;
图23显示为图17对应拆除支座后的爆炸示意图;
图24显示为图23中Ⅰ处放大视图;
图25显示为图2中局部D的放大示意图;
图26显示为本发明的割草机于又一实施例中切割机架、减震机构、引导机构完成装配后的剖视图;
图27显示为本发明的割草机于再一实施例中的切割机架、减震机构、引导机构、调高机构的爆炸示意图;
图28显示为对应图27的装配示意图。
图29显示为图28的剖视图;
图30显示为例减震机构的一示例性结构示意图;
图31显示为引导机构的一示例性结构示意图;
图32显示为引导机构的另一示例性结构示意图;
图33为本发明的割草机中另一示例性的调高机构、切割刀具及机壳的装配关系示意图;
图34为图33的剖视图;
图35为图33中调高转筒的结构示意图;
图36为图33中切割机架的结构示意图;
图37为图33中导向件的结构示意图;
图38为采用图33的结构的割草机部分结构示意图;
图39为与图33对应的割草机整体结构示意图;
图40为本发明实施例的调高方法的一示例性的流程图;
图41为本发明实施例的调高方法的另一示例性的流程图。
零件标号说明
100-机壳、110-底座、120-盖体、130-支座、131-滑移通道、132-限位立板、133-卡板、134-第一限位槽;140-导向件、141-第二限位槽;150-单向锁定件;
200-调高机构;210-切割机架、211-安装槽、212-第一轴段、2121-棘爪、213-第二轴段、2131-限位棱;220-调高电机;230-传动结构、231-主动齿轮、 232-从动齿轮、233-传动杆、234-传动部、234a-螺孔;250-调高转筒、251-筒体;252-棘齿、253-限位盘、254-第二连接部;
300-感应组件、310-光栅结构、311-镂空部、312-阻隔部、320-第一传感器、321-第一信号接收器、322-第一信号发射器;
400-调高限位结构;410-微动开关、411-微动开关本体、412-弹片、413-触发滚轮;420-触发件、421-触发件本体、422-低位触发部、423-高位触发部、420a-避让空间、424-弹性卡接臂、424a-第一限位部;430-安装座、430a-插接腔、430b-开口、431-弹性卡臂、431a-第二限位部;440-挡光片、441-拦截部、442-中空部、450-第二传感器、451-第二信号发射器、452-第二信号接收器;460-安装板;
500-减震机构、510-减震座、511-开槽、520-第一弹性变形部、521-第一弹性板、5211-第一凸起、530-第二弹性变形部、531-第二弹性板、5311-第二凸起;
600-引导机构、610-引导座、620-引导板、621-导向面、630-限位部、640-引导槽、650-第一连接部;
700-行走装置;
810-切割电机、820-切割刀具、821-切割刀。
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,参阅图1-10,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。
请参阅图1和图2,本发明提供的割草机,用于对草坪、植被等进行维护修剪,为了适用于不同的地理环境,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、坐骑式割草机等其他行进方式;另外,本申请的割草机中各执行机构可以直接通过电能驱动,采用蓄电池或直插电的方式,也可以采用汽油发动机驱动、太阳能装置驱动等其他方式。
结合参阅图1至图39,本发明提供一种割草机,包括机壳100、切割装置、调高机构200、感应组件300和控制单元(图未示);所述切割装置具有切割刀具,切割装置设置在所述机壳100上;所述调高机构200能够驱动所述切割装置相对所述机壳100沿调高方向移动;所述感应组件300用于检测所述切割装置相对所述机壳100沿调高方向移动的调高距离,所述感应组件300具有相对应的光栅结构310和第一传感器320,所述光栅结构310包括交替分布的镂空部311和阻隔部312,所述第一传感器320包括第一信号接收器321和第一信号发射器322,所述第一信号发射器322和所述第一信号接收器321之间的第一信号在调高时被周期性的阻隔;所述控制单元根据所述第一信号被阻隔的次数控制所述调高机构调高;其中,所述光栅结构310和所述第一传感器320的其中之一直接或间接的设置于切割装置上,所述光栅结构310和所述第一传感器320的中的另一个直接或间接于机壳100上。譬如,参见图10至图16对应的实施例,光栅结构310设置于切割装置上,第一传感器320设置于机壳100上;又譬如,参见图3-图9对应的实施例和图17-图24对应的实施例,光栅结构310设置于机壳100上,第一传感器320设置于切割装置上。
为便于理解,须知,图1至图16对应的各实施例中,均并未示出任何与切割装置相关的结构;图17-图32对应的各实施例中,仅示出了切割装置中的切割电机810,而并未示出切割刀具等部件;图33-图39对应的各实施例中,展示了用作切割装置的切割刀具820。
需要说明的是,此处的第一传感器320可以采用光电门传感器,第一信号 发射器322和第一信号接收器321都属于该光电门传感器的部件。
调高时,输入预设调高距离,调高机构开始驱动切割装置相对机壳100沿调高方向移动,同时,感应组件300检测切割装置相对机壳100沿调高方向移动的调高距离待实际调高距离达到预设高度距离时,调高机构自动停止运转;其中,感应组件300监测实际调高距离的原理为:在调高机构运转过程中,第一信号发射器322持续发射第一信号,第一信号接收器321持续接收第一信号,发射的第一信号交替的被阻隔部312阻断和通过镂空部311,使得第一信号接收器321接收第一信号时,每被阻隔部312阻断一次,第一信号就中断一次,每经过镂空部311一次,第一信号就通过一次,由于所述光栅结构310和所述第一传感器320的其中之一设置于切割机架210上,其中之另一设置于机壳100上,第一信号被阻断一次和通过一次,切割装置也就相对机壳100沿调高方向移动了单个周期对应的高度,因此,可以通过第一信号发射器322和第一信号接收器321之间第一信号被阻断和通过的次数计量切割装置相对机壳100沿调高方向产生的实际调高距离。此种割草机不仅能实现自动调高,且能够实现对调高距离的精准控制。
在一些实施例中,结合参阅图3至图32,所述调高机构包括切割机架210、调高电机220和传动结构230,所述切割装置设置于所述切割机架210上,所述切割装置还具有用于驱动所述切割刀具执行切割动作的切割电机810,所述切割机架210安装在所述机壳100的滑移通道131内;调高电机220与所述机壳100固定连接;传动结构230连接所述调高电机220与所述切割机架210,所述传动结构230用于将所述调高电机220输出的旋转运动转换为所述切割机架210沿滑移通道131的线性运动,通过所述调高电机220能够驱动所述切割机架210沿所述滑移通道131滑动以调节高度;其中,所述光栅结构310和所述第一传感器320的其中之一设置于切割机架210上,也就是说光栅结构310和第一传感器320的其中之一通过切割机架210间接的设置于切割装置上。
调高时,调高电机220提供的动力经传动结构230传递给切割机架210,以驱动切割机架210沿滑移通道131滑动。
需要说明的是,此处的“所述切割机架210安装在所述机壳100的滑移通道131内”是指切割机架210至少有部分部位位于滑移通道131内,随着切割机架210沿调高方向的移动,切割机架210可能会有部分部位伸出该滑移通道131。
结合参见图1-图3、图10、图17,本发明的一些可选的实施例中,机壳100包括底座110以及与底座110相配合的盖体120,底座110上还设置有支座130,滑移通道131贯穿设置在支座130上,切割机架210可以在滑移通道131内滑动,并在背离盖体120的方向至少部分伸出滑移通道131,以使切割机架210上的切割装置能够进行切割草坪、植被等。
参见图1、图2、图39,本发明的一些可选的实施例中,机壳100部还设置有行走机构,以实现割草机在工作过程中的整体移动。为便于理解,譬如,参阅图1、图2,该行机构包括两个主动轮及两个从动轮,两个主动轮之间可以通过转轴连接;又譬如,参阅图39,该行走机构包括两个主动轮和一个从动轮;在实际实施过程中,该主动轮可通过转轴与电机或发动机连接,从动轮可以采用万向轮,以实现行走方向的调整;主动轮和从动轮的结构均属于现有结构,此处不做赘述。
为便于理解,以下将对光栅结构310可采用的实施方式进行说明:
在一具体的实施例中,参见图10至图16,所述光栅结构310为条状,所述光栅结构310的各所述镂空部311和各所述阻隔部312沿调高方向交替排布,其中,所述光栅结构310设置于切割机架210上,所述第一传感器320设置于所述机壳100上。此时,第一传感器320的第一信号接收器321和第一信号发射器322对应分布在光栅结构310的两侧。
可选的,所述光栅结构中多个镂空部311和阻隔部312的尺寸相同。此种结构中,镂空部311和阻隔部312在沿调高方向上的尺寸是相等的,镂空部311或阻隔部312沿调高方向上的尺寸相当于半个周期高度1/2h。
调高时,切割机架210沿调高方向移动,由于光栅结构310设置于切割机架210上,则光栅结构310也会随着切割机架210沿调高方向移动,那么光栅 结构310中沿调高交替排布的各镂空部311和各阻隔部312则会依序经过第一传感器320,使得第一传感器320中第一信号接收器321交替的接收到第一信号,第一信号交替性的被阻断,则可通过第一信号被阻断和接收的次数之和n乘以半个周期高度1/2h得到实际调高距离H,也就是H=n*(1/2h)。
在另一具体的实施例中,参见图3至图9,所述光栅结构310为条状,所述光栅结构310的各所述镂空部311和各所述阻隔部312沿调高方向交替排布,其中,所述光栅结构310设置于机壳100上,所述第一传感器320的设置于所述切割机架210上。此时,第一传感器320的第一信号接收器321和第一信号发射器322仍然对应分布在光栅结构的两侧。此种结构,也能够实现对实际调高距离的测量。
当用上述条状的光栅结构时可选的,所述第一传感器320的数量为两个,且两个所述第一传感器320沿光栅结构310的长度方向设置。需知,无论第一传感器320设置于切割机架210上还是机壳100上,当第一传感器320为两个或两个以上,且各第一传感器320沿调高方向分布时,相较采用单个第一传感器320的方式,这种采用两个或两个第一传感器320的方式有利于对数据降噪,也就是说在调高完成时,若其中一个第一传感器位于镂空部311和阻隔部312的交汇处附近时,由于振动等原因,可能会采集到错误的数据,而若设置至少两个第一传感器,则还可以通过另一个第一传感器采集的数据得到相对更为精确的数据,有利于更精准的控制调高距离。
在还有一具体的实施例中,结合参见图17至图24,所述光栅结构310为圆盘状,所述光栅结构310与所述调高电机220连接并随调高电机转动,所述光栅结构310的各所述镂空部311和各所述阻隔部312圆周交替均布在所述光栅结构上。此时,调高电机220还与传动结构230连接。
采用此种结构时,若光栅结构中沿周向设置有y个镂空部311和y个阻隔部312,触发信号的次数为n,对于整个传动结构230,调高电机220的输出端每转动一圈对应的调高距离为h 0,则根据接收信号中断的次数获取实际调高距离的关系式如下:
H=n h 0/y
图20中,y=5,在实际实施过程中,该镂空部311的数量也可以为只有一个,使得电机每转动一圈,信号被阻隔部312阻隔一次,信号就穿过镂空部311一次,也就是y=1。
在一些可选的实施例中,结合参阅图10-图24,所述调高机构还对应设置用于限制所述切割装置的最低切割高度和最高切割高度的调高限位结构400。
在一具体的实施例中,结合参见图10至图16,所述调高限位结构400包括挡光片440和第二传感器450,所述挡光片440包含一个位于最高切割高度的拦截部441、一个位于最低切割高度的拦截部441和位于两个拦截部441之间的中空部442,所述拦截部441用于阻隔所述第二传感器450的信号;图10至图16对应的实施例中,挡光片440设置于切割机架210上,第二传感器450设置于机壳100上。在实际实施过程中,该挡光片440也可以设置于机壳100上,而第二传感器450设置于切割机架210上。
图10至图16对应的示例中,机壳100的支座130上设置有安装板460,第二传感器450设置于该安装板460上,第一传感器320也设置于该安装板460上,光栅结构310和挡光片440设置于切割机架210上,光栅结构310采用上述实施例中条状的光栅结构方式。其中,第二传感器450与位于安装板460靠近支座130底壁的第一传感器320处于同一水平面上。需要说明的是,第二传感器450可以为光电门传感器,第二传感器450包括第二信号发射器451、第二信号接收器452等部件,第二信号发射器451与第二信号接收器452相对称设置,第二信号发射器451与第二信号接收器452之间存在一定的空隙,用于放置挡光片440;挡光片440固定在切割机架210上,且挡光片440的长度方向沿切割机架210的滑移方向布置,挡光片440上形成有用于信号通过的中空部442以及用于阻隔信号的拦截部441,进一步的,拦截部441位于挡光片440长度方向的两端,且挡光片440上中空部442的长度尺寸与光栅结构310中所有镂空部311和阻隔部312长度的总和相同。
需要说明的是,每次第二信号发射器451与第二信号接收器452之间信号 中断,都说明割草高度已经到达了允许的最大割草高度或者最低割草高度,从而保护整套调高系统不会因为控制不及时而导致割草机设备损坏。
结合参阅图17-图24,在另一具体的实施例中,所述调高限位结构400包括微动开关410和用于触发所述微动开关410的触发件420;其中,所述微动开关410设置于切割机架210上,触发件420设置于机壳100上,当所述切割机架210调节至最高离地高度或最低离地高度时,所述触发件420触发所述微动开关410,所述调高电机220停止。图21中,该触发件420设置于支座130上,使得触发件420间接设置于机壳上。
此种结构,能够限制切割机架210的离地高度的极限位置,对整个调高装置具有保护作用,并且,这种调高限位结构400相较离合限位的方式结构更简单,成本更低。在实际实施过程中,也可以将所述微动开关410设置在所述机壳100,将所述触发件420设置在所述切割机架210上。
结合参阅21、图22,所述触发件420包括触发件本体421、凸设在触发件本体421上的高位触发部423、凸设在触发件本体421上的低位触发部422,所述高位触发部423和所述低位触发部422沿高度方向间隔布置,且所述高位触发部423和所述低位触发部422之间形成有避让空间420a。
当所述微动开关410随切割机架210运动至与所述避让空间420a对应的位置时,所述微动开关410与所述触发件420之间间隔而互不接触,所述微动开关410处于非触发状态,调高电机220继续带动切割机架210进行高度调高。
当所述切割机架210处于最高离地高度位置时,所述高位触发部423接触并触发所述微动开关410,调高电机220停止运转;当所述切割机架210处于最低离地高度位置时,所述低位触发部422接触并触发所述微动开关410,调高电机220停止运转。
请继续参阅图22,所述高位触发部423上设置有朝向所述微动开关410的高位触发面,所述低位触发部422上设置有朝向所述微动开关410的低位触发面,所述触发件本体421上设置面向所述避让空间420a的间隔面,间隔面与微动开关410被所述避让空间420a隔开,所述高位触发面与所述间隔面之间通过 第一过渡斜面过渡,所述低位触发面与所述间隔面之间通过第二过渡斜面过渡。此种结构,使得切割机架210的高度位置达到最高或最低离地高度位置时,微动开关410能够顺畅的接触高位触发面或低位触发面,从而被可靠的触发,提高设备可靠性。
请再结合参阅图21、图22,所述支座130上设置有第一限位槽134,所述触发件420的底部插入所述第一限位槽134内,所述触发件420的上端设置有弹性卡接臂424,所述支座130上设置有供所述弹性卡接臂424卡入的卡槽。此种结构,能够实现触发件420的快捷拆装。在拆卸触发件420时,只需要将弹性卡接臂424退出卡槽,就可以将触发件420从第一限位槽134取出,使整个触发件420从支座130上拆下;安装触发件420时,只需要将触发件420底部插入第一限位槽134,将弹性卡接臂424卡入卡槽中,即可完成安装。
结合参阅图21、图22,所述支座130上设置有限位立板132,所述限位立板132挡在所述触发件420背对所述微动开关410的一侧,所述限位立板132的上方设置有卡板133,所述卡板133的底部与所述限位立板132的顶部之间形成所述卡槽,所述弹性卡接臂424的端部设置有第一限位部424a,所述弹性卡接臂424穿过所述卡槽,且所述卡板133卡住所述第一限位部424a。
参阅图21,在本发明的一些实施例中,所述卡板133与所述限位立板132平行,并位于限位立板132的外侧,相应的,切割机架210位于限位立板132的内侧。此种结构,使得卡槽的尺寸足够大,能够提供足够的空间供弹性卡接臂424变形卡入。
结合参阅图18、图19、图23、图24,在本发明的一些实施例中,所述高度位置限位组件还包括与所述切割机架210连接的安装座430,所述微动开关410可拆卸地安装在所述安装座430上。
可选的,参阅图24,所述安装座430上设置有插接腔430a和弹性卡臂431,所述微动开关410设置于所述插接腔430a内,所述弹性卡臂431上设置有用于将所述微动开关410限位在所述插接腔430a内的第二限位部431a。此种结构,能够实现微动开关410的快捷拆装。
参阅图23、图24,在本发明的一些实施例中,所述安装座430上对称设置两处所述弹性卡臂431,第二限位部431a上设置有便于微动开关410挤入两弹性卡臂431之间的导向斜面。
参阅图23、图24,在本发明的一些实施例中,所述微动开关410包括微动开关本体411及设置在微动开关本体411上的弹片412,所述安装座430上开设有与所述插接腔430a连通的开口430b,所述弹片412的一端与微动开关本体411连接,另一端伸出所述开口430b,并连接有触发滚轮413,当所述触发件420挤压所述触发滚轮413时,通过所述弹片412触发所述微动开关410。
在实际实施过程中,须知,上述任一种感应组件和任一种调高限位结构都可以应用于切割装置相对机壳调高的割草机中,譬如,虽然图25-图32对应的示例和图33-图39对应的示例中均未展示任何感应组件和调高限位结构,但只需稍加改动,感应组件和调高限位结构也能够应用于这些示例中,实现割草高度的精准调节。
为便于理解,以下将对传动结构230的实施方式进行说明:
在一些实施例中,结合参与图3至图32,所述传动结构230包括传动杆233和传动部234,所述传动杆233能够被所述调高电机220驱动旋转;所述传动部234设置于所述切割机架210上,所述传动部234上设置有螺孔234a,其中,所述传动杆233穿设在所述螺孔234a内,并与所述螺孔234a螺纹配合。此种结构的传动结构230能够使得调高电机220的每输出一圈转动动力,对应切割机架210较小的调高距离,也就能够实现对调高距离更为精准的控制。
可选的,所述传动结构230还包括主动齿轮231和从动齿轮232,所述主动齿轮231与所述调高电机220连接;所述从动齿轮232与所述传动杆233同轴固定;其中,所述从动齿轮232与所述主动齿轮231啮合。需要说明的是,当从动齿轮232大于主动齿轮231的齿数时,也能够进一步提高调高距离控制的精准度。
在一具体的实施例中,参见图25至图32,所述割草机还包括减震机构500和引导机构600,引导机构600与减震机构500连接,且引导机构600与减震 机构500能够沿切割机架210的调高方向发生相对滑动,以实现调高导向。减震机构500和引导机构600中的其中一个安装在切割机架210上,另一个安装在机壳100上。减震机构500包括减震座510以及设置在减震座510上的第一弹性变形部520和第二弹性变形部530。其中,第一弹性变形部520与引导机构600弹性相抵,以限制切割机架210相对于调高方向摆动和倾斜;第二弹性变形部530与引导机构600弹性相抵,以限制切割机架210在径向方向晃动。
请继续参见图25至图32,在本发明的一些实施例中,切割机架210上设有安装槽211,引导机构600安装在安装槽211内,减震机构500安装在机壳100上;或者减震机构500安装在安装槽211内,引导机构600安装在机壳100上。通过在切割机架210上设置安装槽211,不仅使得减震机构500、引导机构600能够根据需求进行拆装更换,便于维护;而且减震机构500、引导机构600作为独立的零部件,能够单独生产加工以及选择合适的生产材料,保证了配合精度以及降低了加工难度。
须知,图3至图24对应的各实施例中,也设置有未标识的安装槽,此处的引导机构和减震机构也可以应用于这些实施例的割草机中。
可选的,减震机构500和引导机构600可以由金属材料制成,例如可以由铝型材制成。
可选的,参见图26至图28、图30至图32,引导机构600包括引导座610,引导座610上相对设置有两个引导板620,两个引导板620之间形成沿调高方向的引导槽640,减震机构500的第一弹性变形部520伸入引导槽640内,并与引导板620的内壁相抵。使得引导机构600和减震机构500之间能够发生相对滑动,实现调高导向,防止切割机架210在调高方向产生摆动及倾斜,从而避免切割机架210在工作时倾斜震动,避免因震动而产生噪音。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第一弹性变形部520包括两个相对设置的第一弹性板521,第一弹性板521的一端与减震座510连接,另一端为悬空端,第一弹性板521的悬空端伸入引导槽640内并向外抵在引导板620的内壁。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第一弹性板521的悬空端设置有向引导板620所在方向凸出的第一凸起5211,第一凸起5211具有与引导板620的内壁接触的弧形面。第一凸起5211的凸出方向朝向引导板620的内壁,使得进入引导槽640内的第一凸起5211能够与对应的引导板620的内壁弹性抵靠,避免因具有间隙而发生摆动和倾斜;并且通过弧形面接触,不仅有利于第一凸起5211与引导板620发生相对滑动,还能避免滑动过程中对引导板620的内壁造成损坏,延长使用寿命。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第一弹性板521可以垂直设置于减震座510上。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第一弹性板521还可以倾斜设置于减震座510上,且第一弹性板521与减震座510之间形成的夹角大于90°,使得两个第一弹性板521之间的间距由靠近减震座510的一端至远离减震座510的一端逐渐增大。具体的,两个第一弹性板521之间形成的通道的截面呈喇叭口状。
可选的,参见图25至图28以及图30,在本发明的一具体实施例中,减震座510的至少一端上设有连接板,连接板凸设在减震座510朝向引导机构600的一侧上,且第二弹性变形部530的凸出于连接板的端部,避免因连接板干扰而造成第二弹性变形部530无法与限位部630弹性抵触。当减震座510安装在切割机架210或者安装在底座110上时,可以通过锁紧件与连接板连接,以使减震座510固定在切割机架210或者底座110上。在本实施例中,减震座510安装在底座110上。其中,连接板与减震座510可以一体成型。
参见图26至图28、图30和图31,在本发明的一些实施例中,引导板620靠近减震机构500的一边设置有用于引导第一弹性变形部520伸入引导槽640的导向面621。
可选的,参见图26和图31,在本发明的一具体实施例中,导向面621可以为弧形面,有利于引导第一弹性变形部520沿导向面621滑入引导槽640。可选的,参见图4和图9,在本发明的一具体实施例中,导向面621还可以为 斜面,且两个引导板620上的引导面形成的通道的截面呈喇叭口状,靠近引导座610一端的开口430b宽度小于远离引导座610一端的开口430b宽度。
参见图4至图6、图8和图9,在本发明的一些实施例中,引导座610上设置有朝向减震机构500凸出的限位部630,限位部630位于两个引导板620之间,减震机构500的第二弹性变形部530沿切割机架210的径向抵在限位部630上,防止切割机架210在径向方向晃动,避免震动产生噪音。
在本发明的一些实施例中,还可以通过第二弹性变形部530沿切割机架210的径向直接抵在引导座610上,即第二弹性变形部530直接与引导槽640的槽底弹性抵靠,以防止切割机架210在径向方向晃动,避免震动产生噪音。
参见图26至图28、图30和图31,在本发明的一些实施例中,第二弹性变形部530包括两个相对设置的第二弹性板531,第二弹性板531的第一端与减震座510连接,另一端悬空,并相对于第二弹性板531的第一端弯曲,第二弹性板531的悬空端抵在限位部630上。
可选的,在本发明的一些实施例中,两个第二弹性板531的弯曲方向相对或者相背,两个弹性板对称分布。参见图30,在本实施例中,两个第二弹性板531的弯曲方向相对。
可选的,参见图30,在本发明的一具体实施例中,第二弹性板531的第一端与减震座510垂直,第二弹性板531的第二端弯曲呈弧形状。
可选的,参见图27和图30,在本发明的一具体实施例中,减震座510上还设有贯穿减震座510的开槽511,开槽511位于两个第二弹性板531的第一端之间,通过设置开槽511,有利于提高第二弹性板531的形变能力,以便第二弹性板531与限位部630弹性接触。其中,开槽511也可以为盲槽,或者在其他实施例中,也可以不设置开槽511。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第二弹性板531的悬空端设置有向限位部630所在方向凸出的第二凸起5311,第二凸起5311具有与限位部630接触的弧形面。第二凸起5311的凸出方向朝向限位部630,使得第二凸起5311的弧形面直接与限位部630弹性抵靠,既保 证了接触的稳定性,避免因具有间隙而晃动,又避免滑动过程中对限位部630造成损伤。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,当两个第二弹性板5314的弯曲方向相对时,两个第二凸起5311之间留设有间隙,为发生弹性形变提供空间。
可选的,参见图26至图28、图30和图31,在本发明的一具体实施例中,第二凸起5311可以为圆柱、半圆柱或四分之三圆柱,其中第二凸起5311的弧形面与限位部630弹性接触。其中,第二凸起5311的截面宽度大于第二弹性板531的第二端的截面宽度,有利于保证第二凸起5311与限位部6303接触,避免第二弹性板531的第二端的其它部位与限位部630接触。
在本发明的一些实施例中,第二弹性板531的数量还可以为1个,第二弹性板531的两端与减震座510相连接,第二弹性板531两端之间的部位向背离减震座510的方向拱起,并能够与限位部630弹性相抵。
参见图26至图28、图30和图31,在本发明的一些实施例中,限位部630由引导座610向减震机构500所在方向拱起形成。
可选的,在本发明的一具体实施例中,限位部630的截面呈U型。
可选的,在本发明的一些实施例中,引导机构600安装在安装槽211内,减震机构500安装在机壳100的底座110上。引导座610上设置有第一连接部650,第一连接部650与切割机架210通过紧固件连接。其中,紧固件可以为螺钉或螺栓。
可选的,参见图26和图32,在本发明的一具体实施例中,第一连接部650的第一端与引导座610背向减震机构500的一侧相连,第一连接部650的第二端凸设有一圆环,圆环可以为封闭圆环或为设有开口430b的敞口圆环。在本实施例中,圆环为设有开口430b的敞口圆环,连接时,紧固件与圆环配合使得引导机构600固定安装在切割机架210上。
可选的,参见图25至图27以及图32,在本发明的一具体实施例中,限位部630朝向安装槽211的一侧凹设形成一容纳空间,第一连接部650可以设置 在该容纳空间内。其中,第一连接部650未伸出该容纳空间,即第一连接部650未抵触安装槽211的槽底,采用该结构设计,使得引导座610直接与安装槽211的槽底贴合,装配更加稳定和精准。而且该容纳空间沿切割高度方向贯穿引导座610,使得引导机构600在受到一定作用力下能够产生弹性变形,使得引导机构600在装入安装槽211时更加简单方便。
参见图1、图2、图25至图32,在本发明的一些实施例中,引导板620、限位部630和引导座610可以一体成型。
参见图2、图25至图32,,在本发明的一些实施例中,第一弹性变形部520、第二弹性变形部530和减震座510可以一体成型。
参见图2、图26至图28,在本发明的一些实施例中,切割机架210上沿周向均匀布置有至少三组引导机构600,减震机构500与引导机构600一一对应。其中,相互对应配合的减震机构500与引导机构600沿切割机架210的径向分布。
可选的,参见图28,在本发明的一具体实施例中,设有三组引导机构600和三组减震机构500,三组引导机构600沿切割机架210的周向均匀分布,安装在安装槽211内,三组减震机构500也沿切割机架210的周向均匀分布,并与引导机构600一一对应滑动配合。
以下将对应图33至图39示例的割草机进行说明:
在一实施例中,结合参见图33至图39,所述调高机构包括调高电机220、切割机架210、调高转筒250;调高电机220固定在所述机壳100上;切割机架210安装在所述机壳100的滑移通道131内,所述切割装置设置于所述切割机架210上随切割机架210动作;调高转筒250与所述调高电机220连接,且所述调高转筒250与所述切割机架210相套接;其中,所述切割机架210与所述调高转筒250之间设置有沿轴向螺旋攀升的螺旋导向结构,当所述调高电机220驱动所述调高转筒250向第一方向转动时,所述调高转筒250带动所述切割机架210沿所述滑移通道轴向滑动。
并且,当所述调高电机220驱动所述调高转筒250向第一方向转动时,所 述切割机架210滑动上升到超过最高位置后,所述切割机架210下降到最低位置。则调高时,一直控制调高转筒250向第一方向转动,则能够将调高电机220调节至任意位置。
须知,图33至图39对应示例的割草机中,并未示出感应组件和调高限位结构,但相同原理的感应组件和调高限位结构在此种割草机中同样是适用的。
图33、图34、图37中,所述调高电机220直接与调高转筒250连接;在实际实施过程中,所述调高电机220也可以通过减速机构间接与调高转筒250连接,可根据需求考虑是否设置减速机构,减速机构可以采用齿轮箱调整输出转速和扭矩,以便对电机输出速度调速后再将动力传递给调高转筒250。
结合参见图33至图37,在一些可选的实施例中,所述机壳100上设置有导向件140,所述滑移通道形成于所述导向件140内,且所述导向件140与所述调高转筒250之间设置有防转导向结构,所述导向件140与所述机壳100之间还设置有单向锁定件160,所述单向锁定件160具有解锁状态和锁定状态。
当所述调高转筒250向第一方向转动时,所述单向锁定件160处于锁定状态,所述导向件140与所述机壳100相对固定,所述切割机架210沿所述滑移通道轴向滑动;当所述调高转筒250向第二方向转动时,所述单向锁定件160处于解锁状态,所述导向件140能够相对所述机壳100转动,所述切割机架210、所述导向件140同时随切割机架210转动。
需要说明的是,第一方向为顺时针或逆时针的中的一种,第二方向为顺时针和逆时针中的另一种,通过控制调高电机220的正反转,即可控制调高转筒250向第一方向或第二方向的转动。
此种结构,采用单向锁定件160能够限制导向件140向第一方向转动,并使导向件140仅能向第二方向转动,由于切割机架210与导向件140是一同转动的,从而限制切割机架210向第一方向转动,且切割机架210仅能够向第二方向转动。此种结构中,切割动作和调高动作共用同一个调高电机220,也就是控制调高电机220向相反的方向转动就能够实现切割动作和调高动作的选择,降低了产品成本,节省了调高-割草系统的占用空间,具有结构简单、操作 便捷的优点。
可选的,所述单向锁定件160包括内圈部和外圈部,所述内圈部与所述导向件140的外壁固定,所述外圈部用于固定在机壳100上。具体的,单向锁定件160可采用单向轴承,单向轴承的内圈与导向件140固定,单向轴承的外圈用于与机壳100固定。此种结构,能够阻止导向件140向第一方向的转动,允许导向件140向第二方向的转动。
在一具体的实施例中,结合参见图33至图37,所述螺旋导向结构包括设置于所述调高转筒250上的和设置于所述切割机架210上的棘爪2121;所述棘齿252沿调高转筒250的轴向螺旋攀升;所述棘爪2121与所述棘齿252相配合;当所述调高电机220驱动调高转筒250向第一方向转动时,所述棘爪2121沿棘齿252的螺旋方向攀升以使切割机架210沿其轴向上升;当所述调高电机220驱动调高转筒250向第二方向转动时,所述棘爪2121与棘齿252相扣合以使切割机架210向第二方向转动。如此,即可通过棘爪2121与棘齿252的相互作用,对应于不同需求,以使切割机架210实现调高作业或者转动切割作业。
在本发明一些实施例中,当所述棘爪2121沿棘齿252的螺旋方向攀升至顶端时,所述棘爪2121脱离棘齿252的顶端并回落至棘齿252的底端。此种结构,保证切割机架210在调节至极限高度后,可自动回到初始位,当下次需要调节时,可重复调高作业。
在本发明一些实施例中,参见图36,棘爪2121设置于切割机架210的内壁上,且所述棘爪2121沿切割机架210的内壁周向布置为至少两个。图36中,所述棘爪2121沿切割机架210的内壁周向相对布置为两个。如此,可以起到平衡调节的作用,保证切割机架210随棘爪2121攀升的动作平稳,保证调高作业的稳定可靠性。
参阅图36和图37,由于导向件140与切割机架210之间设置有防转导向结构,使得切割机架210仅能够相对于导向件140滑动,而不会相对转动。在一些实施例中,所述防转导向结构包括:限位棱2131和第二限位槽141,限位棱2131沿轴向设置于所述切割机架210的外壁上,第二限位槽141沿轴向设置 于所述导向件140的内壁上,且所述第二限位槽141与限位棱2131配合。此种结构,通过限位棱2131卡设在第二限位槽141中,保证切割机架210能够沿导向件140的第二限位槽141上下滑动,同时,防止切割机架210与导向件140之间发生周向转动。
在本发明一些实施例中,所述限位棱2131沿切割机架210的周向布置为多个;所述第二限位槽141沿导向件140的周向布置为多个,且所述第二限位槽141与限位棱2131一一对应。此种结构,保证切割机架210在导向件140内能够保持沿轴向的滑动过程平稳,从而保证调高作业的稳定可靠性。本实施例中,所述限位棱2131沿切割机架210的周向均布为四个,所述第二限位槽141沿导向件140的周向均布为四个。
在其他实施例中,所述限位棱2131可设置于所述导向件140的内壁上,相应地,所述第二限位槽141可设置于所述切割机架210的外壁上。在其他实施例中,所述防转导向结构还可以设置为其他结构形式,只要能够起到周向防转和轴向导向的作用即可。
参阅图35,在本发明一些实施例中,所述调高转筒250包括:筒体251和限位盘253,所述筒体251的内部中空,所述棘齿252设置于所述筒体251的外壁上;所述限位盘253连接于筒体251末端,所述限位盘253的外径大于筒体251的外径,所述棘齿252的末端延伸至限位盘253上。具体的,所述筒体251的顶端开口,以便于调高电机220能够放置在筒体251内;所述筒体251末端的限位盘253用于限定切割机架210的轴向位置。
在本发明一些实施例中,所述限位盘253的底部设置有用于连接调高电机220的第二连接部254,所述调高电机220设置于调高转筒250内,且所述调高电机220的输出轴连接至所述第二连接部254。具体的,所述第二连接部254呈柱形结构,第二连接部254内部沿其轴向开设有连接孔,所述调高电机220的输出轴安装于连接孔中。如此,可为调高电机220提供安装空间,不占用外部空间。
参阅图36,在本发明一些实施例中,所述切割机架210的内部中空,用于 放置调高转筒250,所述切割机架210包括:第一轴段212,所述棘爪2121设置于所述第一轴段212的内壁上;和第二轴段213,所述第二轴段213连接于第一轴段212末端,且所述第二轴段213的直径大于第一轴段212的直径,所述第二轴段213与第一轴段212之间具有限位台阶,所述调高转筒250的限位盘253与所述限位台阶配合限位。具体的,所述第一轴段212与第二轴段213一体成型,所述切割机架210与调高转筒250装配时,所述限位台阶与限位盘253可起到轴向限位的作用,从而保证切割机架210下降至初始位时的轴向位置。并且,棘爪2121靠近限位台阶,初始位时,棘爪2121从棘齿252的底端开始攀升;限位棱2131设置于第二轴段213的外壁上,第二轴段213在导向件140内往复滑动。
在本发明一些实施例中,切割刀具820为切割刀盘,所述切割刀盘连接于切割机架210的底部,所述切割刀盘上沿周向设置有多个切割刀821。本实施例中,所述切割刀盘上沿轴向均布有三个切割刀821,且切割刀821的头部凸出于切割刀盘的外缘。通过调高电机220驱动切割刀盘运动,实现切割作业。由于切割机架210连接切割刀盘,通过调整切割机架210的高度,即可调整切割刀盘的离地高度。
图33至图39中,对应实施例的割草机的具体进行作业过程如下:当需要调高作业时,控制调高电机220驱动调高转筒250向第一方向转动,此时单向锁定件160为锁定状态,其会阻止导向件140及切割机架210向第一方向转动,从而使棘爪2121沿棘齿252的螺旋方向攀升,切割机架210与导向件140之间的防转导向结构使切割机架210与导向件140之间仅能作轴向滑动而不会发生相对转动,从而使切割机架210随棘爪2121一同上升,实现调高功能;当需要切割作业时,控制调高电机220驱动调高转筒250向第二方向转动,第二方向与第一方向反向,此时,棘爪2121与棘齿252相扣合,二者无相对运动,并且由于单向锁定件160此时处于解锁状态,使得切割机架210与调高滚筒一同转动,将调高电机220的转动动力传递至切割刀具820上,使切割系统正常运作,实现切割功能。
此种结构的割草机,根据用户的不同需求,通过控制单元根据不同工况控制调高作业和切割作业,执行调高作业时,控制调高电机220驱动调高转筒250向第一方向转动,以使切割机架210沿其轴向上升;执行切割作业时,控制调高电机220驱动调高转筒250向第二方向转动,以使切割机架210向第二方向转动。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。
对应的,本发明提供一种割草机的调高方法,参阅图1至图8,所述割草机为上述任一种设置有调高电机220和感应组件300的割草机,结合参阅图9,所述调高方法包括:
S100、输入预设调高距离和调高电机220启动信号;
S200、控制第一信号接收器321持续接收第一信号,根据接收第一信号中断的次数,获取实际调高距离;
S300、若所述实际调高距离达到预设调高距离,则控制调高电机220停转;否则,控制调高电机220继续运转。
本发明的一些实施例中,所述调高方法还包括S500:当所述调高电机220停止运转时,记录并存储调高电机220的当前位置,并将当前位置作为下一次高度调节的相对初始位置。
在本发明的一些实施例中,提供一种调高方法,适用于上述设置有微动开关410和触发件420的割草机,所述调高方法还包括S610:当触发件420触发微动开关410时,控制调高电机220停止运转,且此时切割装置达到最低切割位置或者最高切割位置。
本发明的另一些实施例中,提供一种调高方法,适用于上述设置有挡光片440和第二传感器450的割草机,所述调高方法还包括S620:当挡光片440阻隔第二传感器450的第二信号传输时,控制所述调高电极停止运转,且此时切割装置达到最低切割位置或者最高切割位置,其中,所述第二传感器450为光电门传感器。
本发明的一些实施例中,所述调高方法还包括S700:当所述触发件420触 发所述微动开关410或当所述挡光片440阻隔所述第二传感器450的第二信号传输时,存储调高电机220的当前位置,并将当前位置作为高度调节的绝对初始位置。
本发明的一些实施例中,所述调高方法还包括:每次调高时,待调高电机220启动后,先控制调高电机220运转,使所述触发件420触发所述微动开关410或使所述挡光片440阻隔所述第二传感器450的第二信号传输,调高电机220停转,并保持当前位置为绝对初始位置;再以所述绝对初始位置为基点,开始计量第一信号接收器321接收第一信号被中断的次数,获取实际调高距离。
综上,本发明通过第一信号接收器321接收信号中断的次数判断实际调高距离,当实际调高距离达到预设调高距离时,控制调高电机220停止运转,无需人工调高,有利于实现远程控制;并利用调高限位结构400对调高电机220进行保护,提高了调高可靠性和安全性。
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 (19)

  1. 一种割草机,其特征在于,包括:
    机壳;
    切割装置,设置在所述机壳上,所述切割装置具有切割刀具;
    调高机构,能够驱动所述切割装置相对所述机壳沿调高方向移动;
    感应组件,用于检测所述切割装置相对所述机壳沿调高方向移动的调高距离,所述感应组件具有相对应的光栅结构和第一传感器,所述光栅结构包括交替分布的镂空部和阻隔部,所述第一传感器包括第一信号接收器和第一信号发射器,所述第一信号发射器和所述第一信号接收器之间的第一信号在调高时被周期性的阻隔;
    控制单元,根据所述第一信号被阻隔的次数控制所述调高机构调高;
    其中,所述光栅结构和所述第一传感器的其中之一直接或间接的设置于切割装置上,所述光栅结构和所述第一传感器的另一个直接或间接于机壳上。
  2. 根据权利要求1所述的割草机,其特征在于,所述调高机构还包括:
    切割机架,所述切割装置设置于所述切割机架上,所述切割装置还具有用于驱动所述切割刀具执行切割动作的切割电机,所述切割机架安装在所述机壳的滑移通道内;
    调高电机,与所述机壳固定连接;
    传动结构,连接所述调高电机与所述切割机架,所述传动结构用于将所述调高电机输出的旋转运动转换为所述切割机架沿滑移通道的线性运动,通过所述调高电机能够驱动所述切割机架以调节高度;
    其中,所述光栅结构和所述第一传感器的其中之一设置于切割机架上。
  3. 根据权利要求2所述的割草机,其特征在于:所述光栅结构为条状,所述光栅结构的各所述镂空部和各所述阻隔部沿调高方向交替排布,其中,所述光栅结构设置于切割机架上,所述第一传感器设置于所述机壳上。
  4. 根据权利要求2所述的割草机,其特征在于:所述光栅结构为条状,所述光栅结构的各所述镂空部和各所述阻隔部沿调高方向交替排布,其中,所述光栅结构设置于机壳上,所述第一传感器的设置于所述切割机架上。
  5. 根据权利要求3或4所述的割草机,其特征在于:所述第一传感器的数量为两个,且两个所述第一传感器沿光栅结构的长度方向设置。
  6. 根据权利要求3或4所述的割草机,其特征在于:所述光栅结构中多个镂空部和阻隔部的尺寸相同。
  7. 根据权利要求2所述的割草机,其特征在于:所述光栅结构为圆盘状,所述光栅结构与所述调高电机连接并随高电机转动,所述光栅结构的各所述镂空部和各所述阻隔部圆周交替均布在所述光栅结构上。
  8. 根据权利要求2所述的割草机,其特征在于:所述调高机构还对应设置用于限制所述切割装置的最低切割高度和最高切割高度的调高限位结构。
  9. 根据权利要求8所述的割草机,其特征在于:所述调高限位结构包括挡光片和第二传感器,所述挡光片包含一个位于最高切割高度的拦截部、一个位于最低切割高度的拦截部和位于两个拦截部之间的中空部,所述拦截部用于阻隔所述第二传感器的信号;
    所述挡光片和第二传感器的其中之一设置于所述切割机架上,所述挡光片和第二传感器的其中之一设置于所述机壳上。
  10. 根据权利要求8所述的割草机,其特征在于:所述调高限位结构包括微动开关和用于触发所述微动开关的触发件;其中,所述微动开关和所述触发 件的其中之一设置在所述切割机架上,所述微动开关和所述触发件的其中之一设置在所述机壳上;
    当所述切割机架调节至最高离地高度或最低离地高度时,所述触发件触发所述微动开关,所述调高电机停止。
  11. 根据权利要求2所述的割草机,其特征在于,所述割草机还包括:
    减震机构,所述减震机构包括减震座以及设置在所述减震座上的第一弹性变形部和第二弹性变形部;
    引导机构,所述引导机构与所述减震机构连接,且所述引导机构与所述减震机构能够沿所述切割机架的调高方向发生相对滑动;所述减震机构和所述引导机构中的其中一个安装在所述切割机架上,另一个安装在所述机壳上;
    其中,所述第一弹性变形部与所述引导机构弹性相抵,以限制所述切割机架相对于调高方向摆动和倾斜;所述第二弹性变形部与所述引导机构弹性相抵,以限制所述切割机架在径向方向晃动。
  12. 根据权利要求2所述的割草机,其特征在于,所述传动结构包括:
    传动杆,能够被所述调高电机驱动旋转;
    传动部,设置于所述切割机架上,所述传动部上设置有螺孔;
    其中,所述传动杆穿设在所述螺孔内,并与所述螺孔螺纹配合。
  13. 根据权利要求12所述的割草机,其特征在于,所述传动结构还包括:
    主动齿轮,与所述调高电机连接;
    从动齿轮,与所述传动杆同轴固定;
    其中,所述从动齿轮与所述主动齿轮啮合。
  14. 一种割草机的调高方法,其特征在于,所述调高方法包括:
    获取预设调高距离以及调高电机的启动信号;
    控制第一信号接收器持续接收第一信号,根据接收第一信号中断的次数,获取实际调高距离;
    若所述实际调高距离达到所述预设调高距离,则停止所述调高电机。
  15. 根据权利要求14所述的调高方法,其特征在于,所述调高方法还包括:当所述调高电机停止运转时,存储调高电机的当前位置,并将当前位置作为下一次高度调节的相对初始位置。
  16. 根据权利要求14所述的调高方法,其特征在于,所述调高方法还包括:
    当触发件触发微动开关时,控制调高电机停止运转,且此时切割装置达到最低切割位置或者最高切割位置。
  17. 根据权利要求14所述的调高方法,其特征在于,所述调高方法还包括:
    当挡光片阻隔第二传感器的第二信号传输时,控制所述调高电极停止运转,且此时切割装置达到最低切割位置或者最高切割位置,其中,所述第二传感器为光电门传感器。
  18. 根据权利要求16或17所述的调高方法,其特征在于,所述调高方法还包括:
    当所述触发件触发所述微动开关或当所述挡光片阻隔所述第二传感器的第二信号传输时,存储调高电机的当前位置,并将当前位置作为高度调节的绝对初始位置。
  19. 根据权利要求16或17所述的调高方法,其特征在于,所述调高方法还包括:每次调高时,待调高电机启动后,
    先控制调高电机运转,使所述触发件触发所述微动开关或使所述挡光片阻隔所述第二传感器的第二信号传输,调高电机停转,并保持当前位置为绝对初 始位置;
    再以所述绝对初始位置为基点,开始计量第一信号接收器接收第一信号被中断的次数,获取实际调高距离。
PCT/CN2022/127276 2021-10-28 2022-10-25 割草机及割草机的调高方法 WO2023072040A1 (zh)

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CN202122607246.3U CN216017814U (zh) 2021-10-28 2021-10-28 割草机
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CN202111323544.8A CN116097971A (zh) 2021-11-09 2021-11-09 割草机
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CN202122781368.4U CN216532637U (zh) 2021-11-12 2021-11-12 割草机
CN202111344924.XA CN116114458A (zh) 2021-11-12 2021-11-12 割草机及割草机的高度调节控制方法
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