CN116235680A - Mower and height adjusting method - Google Patents

Mower and height adjusting method Download PDF

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Publication number
CN116235680A
CN116235680A CN202111494153.2A CN202111494153A CN116235680A CN 116235680 A CN116235680 A CN 116235680A CN 202111494153 A CN202111494153 A CN 202111494153A CN 116235680 A CN116235680 A CN 116235680A
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CN
China
Prior art keywords
height
mower
heightening
sensor
grating structure
Prior art date
Legal status (The legal status 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 status listed.)
Pending
Application number
CN202111494153.2A
Other languages
Chinese (zh)
Inventor
曹金
高杰
蒲志高
李汪浩
吉米·阿尔赞
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Globe Jiangsu Co Ltd
Original Assignee
Globe Jiangsu Co Ltd
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Globe Jiangsu Co Ltd filed Critical Globe Jiangsu Co Ltd
Priority to CN202111494153.2A priority Critical patent/CN116235680A/en
Priority to PCT/CN2022/127276 priority patent/WO2023072040A1/en
Publication of CN116235680A publication Critical patent/CN116235680A/en
Pending legal-status Critical Current

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    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/006—Control or measuring arrangements
    • A01D34/008—Control or measuring arrangements for automated or remotely controlled operation
    • A—HUMAN NECESSITIES
    • A01—AGRICULTURE; FORESTRY; ANIMAL HUSBANDRY; HUNTING; TRAPPING; FISHING
    • A01D—HARVESTING; MOWING
    • A01D34/00—Mowers; Mowing apparatus of harvesters
    • A01D34/01—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus
    • A01D34/412—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters
    • A01D34/63—Mowers; Mowing apparatus of harvesters characterised by features relating to the type of cutting apparatus having rotating cutters having cutters rotating about a vertical axis
    • A01D34/74—Cutting-height adjustment
    • G—PHYSICS
    • G01—MEASURING; TESTING
    • G01D—MEASURING NOT SPECIALLY ADAPTED FOR A SPECIFIC VARIABLE; ARRANGEMENTS FOR MEASURING TWO OR MORE VARIABLES NOT COVERED IN A SINGLE OTHER SUBCLASS; TARIFF METERING APPARATUS; MEASURING OR TESTING NOT OTHERWISE PROVIDED FOR
    • G01D5/00—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable
    • G01D5/26—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light
    • G01D5/32—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light
    • G01D5/34—Mechanical means for transferring the output of a sensing member; Means for converting the output of a sensing member to another variable where the form or nature of the sensing member does not constrain the means for converting; Transducers not specially adapted for a specific variable characterised by optical transfer means, i.e. using infrared, visible, or ultraviolet light with attenuation or whole or partial obturation of beams of light the beams of light being detected by photocells
    • G01D5/36—Forming the light into pulses
    • G01D5/38—Forming the light into pulses by diffraction gratings
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P60/00—Technologies relating to agriculture, livestock or agroalimentary industries
    • Y02P60/12—Technologies relating to agriculture, livestock or agroalimentary industries using renewable energies, e.g. solar water pumping

Abstract

The invention provides a mower and a heightening method, comprising the following steps: a housing; a cutter frame movable in a height adjustment direction along the housing; the cutting motor is arranged in the cutting frame and drives the cutting blade to rotate; the height-adjusting motor is arranged in the shell and can drive the cutter frame to move; the sensing component can detect the relative distance between the cutter frame and the machine shell, is provided with a grating structure, the grating structure is provided with a blocking part and a hollowed-out part, and at least one first sensor can calculate the number of blocking parts or hollowed-out parts passing through the first sensor when the grating structure moves, so that the moving distance of the grating structure is calculated; and the control unit is used for controlling the start and stop of the height-adjusting motor according to the output information of the sensing component. The invention can realize remote control and has the effect of accurate adjustment.

Description

Mower and height adjusting method
Technical Field
The invention relates to the technical field of garden tools, in particular to a mower and a height adjusting method.
Background
The mower is a mechanical tool for trimming lawns, vegetation and the like, can effectively improve weeding efficiency of an operation worker and reduce labor intensity of the operation worker. However, the requirements of different users on the lawn height are not the same. For this reason, mowers capable of adjusting mowing height have been continuously appeared on the market, so that users can freely select mowing height, thereby controlling the height of the mowed lawn.
However, when the mowing height of the existing mower is adjusted, the mowing height is manually adjusted by a user through a pure mechanical height adjusting mechanism arranged on the mower, or the mowing height is rotated through a motor, and the upper and lower positions of the mowing assembly are adjusted through a transmission structure, so that the automatic height adjustment is realized.
In the manual adjustment mode, the pure mechanical height adjustment mechanism needs to be manually operated by a user, so that the user experience is affected, the intelligent degree is low, and the setting of intelligent products cannot be met. The existing automatic adjusting mode is complicated in overall structure, high in purchasing cost, low in production efficiency, high in manufacturing cost, complex in after-sale maintenance and capable of increasing after-sale cost.
Disclosure of Invention
In view of the above-mentioned drawbacks of the prior art, an object of the present invention is to provide a mower and a height adjusting method for solving the problem of complex structure of a height adjusting mechanism of the mower in the prior art.
To achieve the above and other related objects, the present invention provides a lawn mower comprising: a housing; a cutter frame movable in a height adjustment direction along the housing; the cutting motor is arranged in the cutting frame and drives the cutting blade to rotate; the height-adjusting motor is arranged in the shell and can drive the cutter frame to move; the sensing component can detect the relative distance between the cutter frame and the machine shell, is provided with a grating structure, the grating structure is provided with a blocking part and a hollowed-out part, and at least one first sensor can calculate the number of blocking parts or hollowed-out parts passing through the sensor when the grating structure moves, so that the moving distance of the grating structure is calculated; and the control unit is used for controlling the start and stop of the height-adjusting motor according to the output information of the sensing component.
In one embodiment of the present invention, the mower further comprises a limiting assembly, the limiting assembly comprising: the light blocking sheet comprises a blocking part positioned at the highest cutting height, a blocking part positioned at the lowest cutting height and a hollow part positioned between the two blocking parts, and the blocking part is used for blocking signals of the second sensor.
In an embodiment of the invention, the first sensor is a photogate sensor, and the photogate sensor includes a first signal transmitter and a first signal receiver, where the first signal transmitter and the first signal receiver are located on two sides of the grating structure, and the grating structure can periodically block signal connection between the first signal transmitter and the first signal receiver.
In an embodiment of the present invention, a mounting plate is fixed on the housing, and the mounting plate is used for mounting the first sensor and the second sensor.
In an embodiment of the invention, two first sensors are disposed on the mounting plate, and the two first sensors are disposed along a length direction of the grating structure.
In one embodiment of the invention, a guiding mechanism is fixed on the housing, and the guiding mechanism is arranged between the housing and the cutter frame and is used for guiding the movement direction of the cutter frame.
In an embodiment of the present invention, a screw sleeve is fixed on the top of the cutter frame, and the screw sleeve is in transmission connection with the height-adjusting motor through a transmission structure, so as to realize reciprocating lifting of the cutter frame.
In an embodiment of the present invention, the transmission structure includes: one end of the screw rod is rotationally connected with the support through a bearing, and the other end of the screw rod is in threaded connection with the threaded sleeve; the driven gear is coaxially fixed with the screw rod and is positioned at one end of the screw rod far away from the screw sleeve; the driving gear is coaxially fixed with the output shaft of the height-adjusting motor and meshed with the driven gear.
The invention also provides a heightening method, which comprises the following steps: the electric height adjusting device is the electric height adjusting device; the heightening method comprises the following steps: acquiring a preset heightening distance and a starting signal of a heightening motor; the first signal receiver is controlled to continuously receive signals, and the actual heightening distance is obtained according to the interruption times of the received signals; and stopping the height-adjusting motor if the actual height-adjusting distance reaches a preset height-adjusting distance.
In an embodiment of the invention, the method for adjusting height further includes: and when the height-adjusting motor stops running, storing the current position of the height-adjusting motor, and taking the current position as the relative initial position of the next height adjustment.
In an embodiment of the invention, the method for adjusting height further includes: when the light barrier blocks signal transmission between the photoelectric door sensors, the height-adjusting motor is controlled to stop running, and at the moment, the cutter frame reaches the lowest ground clearance height or the highest ground clearance height, the current position of the cutter frame is stored, and the current position is used as the relative initial position for next height adjustment.
In an embodiment of the invention, the method for adjusting height further includes: and controlling the output shaft of the height-adjusting motor to rotate forward or reversely according to the position relation between the preset height-adjusting distance and the relative initial position, so that the cutter frame correspondingly ascends or descends.
As described above, the electric heightening device, the heightening method and the mower have the following beneficial effects:
1. the triggering signal is obtained through the sensing component, the actual height-adjusting distance is judged by utilizing the frequency of signal interruption received by the signal receiver, and when the actual height-adjusting distance reaches the preset height-adjusting distance, the height-adjusting motor is controlled to stop running, on one hand, manual height adjustment is not needed, and remote control is facilitated; on the other hand, can realize the accurate control of cutting frame altitude mixture control.
2. The trigger signal is obtained through the limiting component, and each time the second signal receiver receives signal interruption, the mowing height reaches the allowed maximum mowing height or the allowed minimum mowing height, so that the whole set of height adjusting system is protected from being damaged by mower equipment caused by untimely control.
Drawings
FIG. 1 is an isometric view of a mower according to an embodiment of the present invention;
FIG. 2 is a schematic view showing an internal structure of a mower according to an embodiment of the present invention;
FIG. 3 is an isometric view of an electric height adjustment device of a mower according to an embodiment of the present invention;
FIG. 4 is a schematic view showing a stand of an electric height adjusting device of a mower according to an embodiment of the present invention;
FIG. 5 is a schematic view showing a driving assembly of an electric height adjusting device of a mower according to an embodiment of the present invention;
FIG. 6 is a schematic view showing a cutter frame of an electric height adjusting device of a mower according to an embodiment of the present invention;
FIG. 7 is an enlarged view of part A of FIG. 4, mainly showing the structure of the slot;
FIG. 8 is a diagram showing an assembly of a sensing assembly, a limiting assembly and a cutter frame of an electric height adjustment device of a mower according to an embodiment of the present invention;
FIG. 9 is a schematic view showing a sensing assembly and a limiting assembly of an electric height adjusting device of a mower according to an embodiment of the present invention;
FIG. 10 is a block diagram of a system for powering up a mower according to an embodiment of the present invention;
FIG. 11 is a flow chart illustrating a method for tuning up according to an embodiment of the present invention;
FIG. 12 is a flowchart illustrating a method for tuning up according to an embodiment of the present invention.
Description of element reference numerals
100. A housing; 110. a base; 120. a cover body; 200. an electric heightening device; 210. a support; 211. a slip path; 212. a slot; 213. a mounting plate; 220. a cutter frame; 221. a mounting groove; 222. a screw sleeve; 230. a drive assembly; 231. a motor is heightened; 232. a screw rod; 233. a drive gear; 234. a driven gear; 240. an induction assembly; 241. a first sensor; 2411. a first signal transmitter; 2412. a first signal receiver; 242. a grating structure; 2421. a hollowed-out part; 2422. a blocking portion; 250. a limit component; 251. a second sensor; 2511. a second signal transmitter; 2512. a second signal receiver; 252. a light blocking sheet; 2521. an interception part; 2522. a hollow portion; 260. a control unit; 270. an input unit; 300. and a walking device.
Detailed Description
Other advantages and effects of the present invention will become apparent to those skilled in the art from the following disclosure, which describes the embodiments of the present invention with reference to specific examples. The invention may be practiced or carried out in other embodiments that depart from the specific details, and the details of the present description may be modified or varied from the spirit and scope of the present invention. It should be noted that the following embodiments and features in the embodiments may be combined with each other without conflict. It is also to be understood that the terminology used in the examples of the invention is for the purpose of describing particular embodiments only, and is not intended to limit the scope of the invention. The test methods in the following examples, in which specific conditions are not noted, are generally conducted under conventional conditions or under conditions recommended by the respective manufacturers.
Please refer to fig. 1 to 12. It should be understood that the structures, proportions, sizes, etc. shown in the drawings are for illustration purposes only and should not be construed as limiting the invention to the extent that it can be practiced, since modifications, changes in the proportions, or otherwise, used in the practice of the invention, are not intended to be critical to the essential characteristics of the invention, but are intended to fall within the spirit and scope of the invention. Also, the terms such as "upper," "lower," "left," "right," "middle," and "a" and the like recited in the present specification are merely for descriptive purposes and are not intended to limit the scope of the invention, but are intended to provide relative positional changes or modifications without materially altering the technical context in which the invention may be practiced.
Referring to fig. 1 and 2, the present invention provides a mower for maintenance trimming of lawns, vegetation, etc. In order to be suitable for different terrain environments, the cutting height of the mower provided by the invention can be adjusted. The technical scheme provided by the application not only can be suitable for electric mowers, but also can be suitable for mowers with other advancing modes such as stepping mowers, hand-push mowers, riding mowers and the like or mowers driven by other power such as a gasoline engine, solar energy and the like.
Referring to fig. 1 and 2, in the present invention, a mower includes a housing 100, a cutting device (not shown), an electric height adjusting device 200 and a walking device 300. Wherein, the cutting device is at least partially arranged in the casing 100, extends outside the casing 100 with the parts, and is arranged in a lifting way relative to the casing 100; the electric heightening device 200 is installed in the casing 100 and used for adjusting the cutting height of the cutting device, a sliding channel 211 is formed in the electric heightening device 200, and the cutting device is connected in the sliding channel 211 in a lifting manner; the running gear 300 is disposed at the bottom of the housing 100 to realize the overall movement of the mower during operation.
Referring to fig. 1 and 2, in the present embodiment, the housing 100 includes a base 110 and a cover 120 cooperating with the base 110, and a cavity is formed between the base 110 and the cover 120, the cavity can be used for installing each part in a mower, an opening (not shown) is disposed on the base 110 at a position corresponding to the cutting device, and the opening is in communication with a sliding channel 211 in the electric height adjusting device 200, in addition, the cutting device can slide in the sliding channel 211, and the cutting device at least partially extends to the outside of the base in a direction away from the cover 120, so that the cutting device can cut lawns, vegetation, etc. It should be noted that the sliding channel 211 is parallel to the axial direction of the cutting device, i.e., the height adjusting direction is parallel to the axial direction of the cutting device.
Referring to fig. 1 and 2, the walking device 300 is mounted on the base 110 to facilitate movement of the mower; in this embodiment, the running gear 300 includes two driving wheels and two driven wheels, the two driving wheels may be connected by a rotating shaft, and in some embodiments, the driving wheels may be connected to a motor or an engine by the rotating shaft, so that the driving wheels have driving force; in addition, the driven wheel can adopt a universal wheel, so that the adjustment of the moving direction is realized; the specific structures of the driving wheel and the driven wheel belong to the prior art, and are not repeated here.
Referring to fig. 1 and 2, in some embodiments of the invention, a cutting apparatus includes a power machine and a cutter. The power machine is mounted on the cutter frame 220 in the electric height-adjusting device 200, and can be an electric motor, a gasoline engine or other power mechanism along with the reciprocating lifting of the cutter frame 220 along the sliding channel 211, in this embodiment, the power machine is an electric motor; in addition, the output shaft of the power machine sequentially passes through the cutter frame 220 and the base 110, and is located at the outer side of the base 110; the cutting blade and one end of the output shaft of the power machine facing the ground are coaxially fixed, and a certain included angle is formed between the cutting blade and the output shaft of the power machine, so that mowing operation of the mower is realized.
Referring to fig. 3 to 9, the following describes the electric height adjusting device in detail. In this embodiment, the motorized height adjustment device 200 includes a support 210, a cutter frame 220, a drive assembly 230, a sense assembly 240, a limit assembly 250, and a control unit 260. The support 210 is mounted on the base 110 and is located in a cavity formed between the base 110 and the cover 120, and the support 210 can be used for mounting the driving component 230 and the cutting machine frame 220, it should be noted that the cutting machine frame 220 is slidingly connected with the support 210, and the driving component 230 is in transmission connection with the cutting machine frame 220, so that the cutting machine frame 220 can be lifted up and down reciprocally; the sensing assembly 240 is used to monitor the actual height of the cutter frame 220; the limiting assembly 250 indirectly controls the driving assembly 230 to stop running when the cutting device is adjusted to the highest position or the lowest position; the control unit 260 is electrically connected with the driving assembly 230, the sensing assembly 240 and the limiting assembly 250, and can control the start and stop of the driving assembly 230.
Referring to fig. 4, 5 and 6, in the present embodiment, the shape and structure of the support 210 are similar to that of a barrel, the top of the support 210 is provided with an opening, the bottom of the support 210 is provided with a through hole (not labeled in the drawings) for the output shaft of the power machine to pass through, and the sliding channel 211 is formed inside the support 210; the cutter frame 220 is slidably connected in the sliding channel 211, further, a mounting groove 221 is formed in the outer side wall of the cutter frame 220, a guide mechanism (not shown) or a damping mechanism (not shown) can be mounted in the mounting groove 221, the guide mechanism and the damping mechanism can slide relatively along the length direction of the mounting groove 221 so as to realize height adjustment and guide of the cutter frame 220, in addition, the damping mechanism reduces the influence of vibration generated by the cutter in the moving process on the cutter frame 220 by virtue of an elastic buffering principle, the stability of the cutter frame 220 is ensured, and it is required to say that three guide mechanisms or damping mechanisms are formed in the mounting groove 221 along the circumferential direction of the cutter frame 220 and are in one-to-one correspondence with the mounting groove 221; in some embodiments of the invention, the shock absorbing mechanism and the guide mechanism may be made of a metallic material, such as an aluminum profile.
Referring to fig. 4 and 5, in the present embodiment, the driving assembly 230 includes a height adjusting motor 231 and a transmission structure. Wherein the height adjustment motor 231 is fixed on the support 210 and is located between the support 210 and the cutter frame 220; the transmission structure connects the height-adjusting motor 231 and the cutter frame 220 in a transmission manner, and converts the rotation motion of the output shaft of the height-adjusting motor 231 into the linear motion of the cutter frame 220. Further, the transmission structure comprises a screw 232, a driving gear 233 and a driven gear 234; the screw rod 232 is vertically disposed on the support 210, and one end of the screw rod 232 is rotatably connected with the support 210 through a bearing, it should be noted that a screw sleeve 222 is fixed at the top of the outer sidewall of the cutter frame 220 and is in threaded connection with the other end of the screw rod 232, so as to realize reciprocating lifting of the cutter frame 220 through rotation of the screw rod 232. The driven gear 234 and one end of the screw rod 232 far away from the screw sleeve 222 are coaxially fixed, the driving gear 233 and the output shaft of the height-adjusting motor 231 are coaxially fixed, and the driving gear 233 and the driven gear 234 are mutually meshed, and it is noted that the number of teeth of the driven gear 234 is larger than that of the driving gear 233.
Referring to fig. 6, 7, 8 and 9, in the present embodiment, the sensing component 240 includes a first sensor 241 and a grating structure 242. The first sensor 241 is fixed on the support 210, further, a slot 212 is formed at the bottom of the sidewall of the support 210, and a mounting plate 213 is fixed in the slot 212, where the mounting plate 213 is used for mounting the first sensor 241 and also used for mounting the second sensor 251 in the limiting component 250; in addition, two first sensors 241 are provided on the mounting board, and the two first sensors 241 are provided along the length direction of the grating structure 242; the first sensor 241 includes a first signal emitter 2411, a first signal receiver 2412, and other components, where the first signal emitter 2411 and the first signal receiver 2412 are symmetrically disposed, and a certain gap exists between the first signal emitter 2411 and the first signal receiver 2412 for placing the grating structure 242. The grating structure 242 is fixed on the dicing frame 220, the length direction of the grating structure 242 is arranged along the sliding direction of the dicing frame 220, the grating structure 242 is further formed with a hollowed-out portion 2421 for signal passing and a blocking portion 2422 for blocking the signal along the length direction, the hollowed-out portion 2421 and the blocking portion 2422 in the grating structure 242 are arranged at intervals along the length direction of the grating structure 242, and the sizes of the hollowed-out portion 2421 and the blocking portion 2422 in the grating structure 242 are the same. In this embodiment, the first sensor 241 and the second sensor 251 are both photogate sensors.
Referring to fig. 6, 7, 8 and 9, in the present embodiment, the limiting assembly 250 includes a second sensor 251 and a light blocking sheet 252. Wherein the second sensor 251 is fixed on the mounting plate 213 and is on the same horizontal plane as the first sensor 241 located on the mounting plate 213 near the bottom wall of the support 210; the second sensor 251 includes a second signal emitter 2511, a second signal receiver 2512, and other components, where the second signal emitter 2511 and the second signal receiver 2512 are symmetrically arranged, and a certain gap exists between the second signal emitter 2511 and the second signal receiver 2512, so as to place the light blocking piece 252; the light blocking sheet 252 is fixed on the cutter frame 220, the length direction of the light blocking sheet 252 is arranged along the sliding direction of the cutter frame 220, a hollow portion 2522 for passing signals and an interception portion 2521 for intercepting signals are formed on the light blocking sheet 252, further, the interception portion 2521 is located at two ends of the length direction of the light blocking sheet 252, and the length dimension of the hollow portion 2522 on the light blocking sheet 252 is the same as the sum of the lengths of all the hollowed portions 2421 and the interception portions 2422 in the grating structure 242.
It should be noted that, each time the signal between the second signal transmitter 2511 and the second signal receiver 2512 is interrupted, the mowing height has reached the allowed maximum mowing height or the minimum mowing height, so as to protect the whole set of height-adjusting system from damage to mower equipment caused by untimely control.
When the height is adjusted, a preset height adjusting distance is input, the height adjusting motor 231 is started, the height adjusting motor 231 starts to operate, and the rotary motion output by the height adjusting motor 231 is converted into linear motion of the cutter frame 220 through the transmission structure, so that the height adjustment of the ground is realized. In the operation process of the height-adjusting motor 231, the first signal emitter 2411 in the first sensor 241 continuously emits signals, the first signal receiver 2412 continuously receives signals, the emitted signals are blocked by the blocking part 2422 and pass through the hollowed part 2421 alternately, so that when the first signal receiver 2412 receives signals, the signals are interrupted once every time the signals are blocked by the blocking part 2422, and in view of the fact that the output end of the height-adjusting motor 231 rotates for every round by a height-adjusting distance corresponding to a certain value, and the number of times of signal blocking is equal to the number of the blocking parts 2422, the control unit 260 can acquire the actual height-adjusting distance according to the number of times of signal interruption, and when the actual height-adjusting distance reaches the preset height distance, the height-adjusting motor 231 automatically stops operating; in addition, during the operation of the elevation motor 231, the second signal emitter 2511 in the second sensor 251 continuously emits signals, the corresponding second signal receiver 2512 continuously receives signals, the emitted signals pass through the hollow portion 2522 of the light blocking sheet 252 or are blocked by the blocking portion 2521, when the emitted signals are blocked, the corresponding cutter frame 220 moves to the highest position or the lowest position, at this time, the control unit 260 acquires signals of signal interruption of the second sensor 251, and controls the elevation motor 231 to stop operation.
In practical implementation, the signals emitted by the first signal emitter 2411 and the second signal emitter 2511 may be photoelectric signals. In addition, the number of times the signal is received through the hollowed portion 2421, the number of times the received signal is changed from receiving the interrupt, and the number of times the received signal is changed from interrupting to receiving may be equal to the number of times the received signal is interrupted, which may be used as a basis for obtaining the actual raising distance.
Referring to fig. 10, in the present invention, the mower further includes an input unit 270, wherein the input unit 270 is electrically connected to the control unit 260, and is used for inputting a preset elevation distance and a start signal for adjusting to the motor 231; the input unit 270 and the control unit 260 are functional modules, and these functional modules may be integrated into one physical entity in whole or in part or may be physically separated. And these units may all be implemented in the form of software calls through the processing element; or can be realized in hardware; the method can also be realized in a form that a part of units are called by processing elements to be software, and the other part of units are realized in a form of hardware. Furthermore, all or part of these units may be integrated together or may be implemented independently. The processing element described herein may be an integrated circuit having signal processing capabilities. In implementation, each step of the above method or each module above may be implemented by an integrated logic circuit of hardware in a processor element or an instruction in a software form.
In some embodiments of the present invention, the control unit 260 includes a processor and a memory that records and stores the current position of the cutter carriage 220 when the elevation motor 231 is deactivated, the control unit 260 taking the current position as the relative initial position for the next elevation adjustment.
In some embodiments of the present invention, the control unit 260 includes a processor, when the elevation adjustment motor completes one elevation adjustment operation and needs to perform the next elevation adjustment operation, the elevation adjustment motor 231 rotates, so that the cutter frame 220 is reciprocally lifted, and the second sensor 251 reciprocally lifts along with the cutter frame 220, when the signal in the second sensor 251 is interrupted, so that the cutter frame 220 reaches the lowest or highest elevation, and the position of the cutter frame 220 is the relative initial position. In this manner, accumulated errors resulting from storing the current position of cutter frame 220 multiple times may be avoided, resulting in inaccurate adjustment of the mowing height.
It should be noted that, the input unit 270 may be directly disposed on the mower, or other remote terminals may be used; the control unit 260 may be disposed on the electric height-adjusting device 200, or may be directly disposed on another part of the mower, and when communication with the outside is required, the control unit 260 further includes a communicator connected to the processor, and remote control can be implemented using the communicator.
The processor may be a general-purpose processor, including a Central Processing Unit (CPU), a Network Processor (NP), and the like; but also digital signal processors (Digital Signal Processing, abbreviated as DSP), application specific integrated circuits (Application Specific Integrated Circuit, abbreviated as ASIC), field-programmable gate arrays (Field-Programmable Gate Array, abbreviated as FPGA) or other programmable logic devices, discrete gate or transistor logic devices, discrete hardware components; the memory may include random access memory (Random Access Memory, simply RAM) and may also include nonvolatile memory (Non volatile Memory), such as at least one magnetic disk memory.
Referring to fig. 11 and 12, the present invention further provides a method for adjusting height, which provides the electric height adjusting device 220 as described above, and includes the following steps:
s01, acquiring a preset heightening distance and a starting signal of a heightening motor 231;
s02, controlling the first signal receiver 2411 to continuously receive signals, and acquiring an actual heightening distance according to the number of times of interruption of the received signals;
and S03, stopping the height-adjusting motor 231 if the actual height-adjusting distance reaches a preset height-adjusting distance.
In some embodiments of the present invention, the method for heightening further includes S04: when the elevation motor 231 is stopped, the current position of the cutter frame 220 is stored and taken as the relative initial position for the next elevation adjustment.
In some embodiments of the present invention, when the electric elevating device 200 is further configured with the second sensor 251 and the light barrier 252, the elevating method further includes S05: when the light barrier 252 blocks signal transmission between the second sensors 251, the elevation motor 231 is controlled to stop operation.
In some embodiments of the present invention, the heightening method further includes S06: when the light barrier 252 blocks signal transmission between the second sensors 251, the cutter carriage 220 reaches the lowest or highest elevation, the current position of the cutter carriage 220 is stored, and the current position is taken as the relative initial position of the next elevation adjustment.
In some embodiments of the present invention, a signal is given to the control unit 260 when the signal in the second sensor 251 is interrupted, so that the control unit 260 clears the accumulated mowing height, thereby avoiding inaccurate mowing height due to accumulated error caused by multiple adjustments of mowing height.
Referring to fig. 12, in some embodiments of the present invention, the method for heightening further includes S01.1: according to the positional relationship between the preset elevation distance and the relative initial position, the output shaft of the elevation motor 231 is controlled to rotate forward or backward, so that the cutter frame 220 is correspondingly lifted or lowered.
In summary, the sensing component 240 of the present invention obtains the trigger signal, determines the actual height adjustment distance by using the number of times of signal interruption received by the first signal receiver 2412, and controls the height adjustment motor 231 to stop operating when the actual height adjustment distance reaches the preset height adjustment distance; the trigger signal is also captured by the limit assembly 250, and each time the second signal receiver 2512 receives a signal interruption, it indicates that the mowing height has reached the maximum mowing height or the minimum mowing height allowed, thereby protecting the entire set of the raising system from damage to mower equipment due to untimely control. Therefore, the invention effectively overcomes various defects in the prior art and has high industrial utilization value.
The above embodiments are merely illustrative of the principles of the present invention and its effectiveness, and are not intended to limit the invention. Modifications and variations may be made to the above-described embodiments by those skilled in the art without departing from the spirit and scope of the invention. Accordingly, it is intended that all equivalent modifications and variations of the invention be covered by the claims, which are within the ordinary skill of the art, be within the spirit and scope of the present disclosure.

Claims (12)

1. A mower, comprising:
a housing;
a cutter frame movable in a height adjustment direction along the housing;
the cutting motor is arranged in the cutting frame and drives the cutting blade to rotate;
the height-adjusting motor is arranged in the shell and can drive the cutter frame to move;
the sensing component can detect the relative distance between the cutter frame and the machine shell, is provided with a grating structure, the grating structure is provided with a blocking part and a hollowed-out part, and at least one first sensor can calculate the number of blocking parts or hollowed-out parts passing through the first sensor when the grating structure moves, so that the moving distance of the grating structure is calculated;
and the control unit is used for controlling the start and stop of the height-adjusting motor according to the output information of the sensing component.
2. The mower of claim 1, further comprising a spacing assembly comprising: the light blocking sheet comprises a blocking part positioned at the highest cutting height, a blocking part positioned at the lowest cutting height and a hollow part positioned between the two blocking parts, and the blocking part is used for blocking signals of the second sensor.
3. The mower of claim 2 wherein the first sensor is a photogate sensor comprising a first signal transmitter and a first signal receiver, the first signal transmitter and the first signal receiver being located on either side of the grating structure, the grating structure periodically blocking signal connection between the first signal transmitter and the first signal receiver.
4. A lawnmower as claimed in claim 3 wherein: the shell is fixed with a mounting plate, and the mounting plate is used for mounting the first sensor and the second sensor.
5. The mower of claim 4, wherein: the first sensors are arranged on the mounting plate in two, and the two first sensors are arranged along the length direction of the grating structure.
6. The mower of claim 1, wherein: the machine shell is fixedly provided with a guide mechanism, and the guide mechanism is arranged between the machine shell and the cutting machine frame and is used for guiding the movement direction of the cutting machine frame.
7. The mower of claim 6, wherein: the top of the cutting machine frame is fixedly provided with a screw sleeve, and the screw sleeve is in transmission connection with the height-adjusting motor through a transmission structure to realize reciprocating lifting of the cutting machine frame.
8. The mower of claim 7, wherein: the transmission structure comprises:
one end of the screw rod is rotationally connected with the support through a bearing, and the other end of the screw rod is in threaded connection with the threaded sleeve;
the driven gear is coaxially fixed with the screw rod and is positioned at one end of the screw rod far away from the screw sleeve;
the driving gear is coaxially fixed with the output shaft of the height-adjusting motor and meshed with the driven gear.
9. A method of heightening, the method comprising:
acquiring a preset heightening distance and a starting signal of a heightening motor;
the first signal receiver is controlled to continuously receive signals, and the actual heightening distance is obtained according to the interruption times of the received signals;
and stopping the height-adjusting motor if the actual height-adjusting distance reaches a preset height-adjusting distance.
10. The heightening method according to claim 9, characterized in that: the heightening method further comprises the following steps: and when the height-adjusting motor stops running, storing the current position of the height-adjusting motor, and taking the current position as the relative initial position of the next height adjustment.
11. The heightening method according to claim 9, characterized in that: the heightening method further comprises the following steps: when the light barrier blocks signal transmission between the photoelectric door sensors, the height-adjusting motor is controlled to stop running, and at the moment, the cutter frame reaches the lowest ground clearance height or the highest ground clearance height, the current position of the cutter frame is stored, and the current position is used as the relative initial position for next height adjustment.
12. The heightening method according to claim 11, characterized in that: the heightening method further comprises the following steps: and controlling the output shaft of the height-adjusting motor to rotate forward or reversely according to the position relation between the preset height-adjusting distance and the relative initial position, so that the cutter frame correspondingly ascends or descends.
CN202111494153.2A 2021-10-28 2021-12-08 Mower and height adjusting method Pending CN116235680A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111494153.2A CN116235680A (en) 2021-12-08 2021-12-08 Mower and height adjusting method
PCT/CN2022/127276 WO2023072040A1 (en) 2021-10-28 2022-10-25 Mower and height adjustment method for same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN202111494153.2A CN116235680A (en) 2021-12-08 2021-12-08 Mower and height adjusting method

Publications (1)

Publication Number Publication Date
CN116235680A true CN116235680A (en) 2023-06-09

Family

ID=86631807

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111494153.2A Pending CN116235680A (en) 2021-10-28 2021-12-08 Mower and height adjusting method

Country Status (1)

Country Link
CN (1) CN116235680A (en)

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