CN116235681A - Mower and height adjusting method - Google Patents

Mower and height adjusting method Download PDF

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Publication number
CN116235681A
CN116235681A CN202111494155.1A CN202111494155A CN116235681A CN 116235681 A CN116235681 A CN 116235681A CN 202111494155 A CN202111494155 A CN 202111494155A CN 116235681 A CN116235681 A CN 116235681A
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CN
China
Prior art keywords
height
adjusting
motor
cutter frame
heightening
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
CN202111494155.1A
Other languages
Chinese (zh)
Inventor
曹金
高杰
蒲志高
李汪浩
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 CN202111494155.1A priority Critical patent/CN116235681A/en
Priority to PCT/CN2022/127276 priority patent/WO2023072040A1/en
Publication of CN116235681A publication Critical patent/CN116235681A/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, which relate to the technical field of garden tools and comprise the following steps: a housing; a cutting motor driving at least one cutting blade; a height adjustment assembly comprising a height adjustment motor capable of driving a cutter frame through a transmission assembly to vary its height, the cutter frame providing a structure capable of receiving and supporting the cutter motor, the cutter frame being movable along the housing in a height adjustment direction; a control unit controlling rotation of the elevation motor based at least in part on a current elevation of the cutter frame; the sensing assembly is capable of detecting the current height of the cutter frame and transmitting current height information to the control circuit, and comprises a sensor and a grating structure, wherein one of the sensor and the grating structure is located on the cutter frame. 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. In the existing automatic adjustment mode, the whole structure of the mower is too complex, the purchasing cost is high, the production efficiency is low, the manufacturing cost is high, the after-sale maintenance is complex, and the after-sale cost is increased.
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 cutting motor driving at least one cutting blade; a height adjustment assembly comprising a height adjustment motor capable of driving a cutter frame through a transmission assembly to vary its height, the cutter frame providing a structure capable of receiving and supporting the cutter motor, the cutter frame being movable along the housing in a height adjustment direction; a control unit controlling rotation of the elevation motor based at least in part on a current elevation of the cutter frame; the sensing assembly is capable of detecting the current height of the cutter frame and transmitting current height information to the control circuit, and comprises a sensor and a grating structure, wherein one of the sensor and the grating structure is located on the cutter frame.
In an embodiment of the present invention, the transmission assembly includes a screw rod and a screw sleeve, the screw rod is driven to rotate by the height-adjusting motor, an external thread of the screw rod is meshed with an internal thread of the screw sleeve, and the screw sleeve is connected to the cutter frame.
In an embodiment of the invention, the sensor is a photogate sensor, and includes a signal transmitter and a signal receiver, where the signal transmitter and the signal receiver are located on two sides of the grating structure, and signals between the signal transmitter and the signal receiver may be periodically blocked by the grating structure.
In an embodiment of the present invention, a driving gear is disposed on an output shaft of the height-adjusting motor, a driven gear is disposed at an end of the screw rod, and the driving gear is meshed with the driven gear.
In one embodiment of the invention, a guide mechanism is fixed to the housing, the guide mechanism being arranged between the support and the cutter frame for guiding the direction of movement of the cutter frame.
In one embodiment of the present invention, a slot is formed in the dicing frame, and the slot is used for mounting the photogate sensor.
In an embodiment of the invention, the grating structure includes a plurality of hollowed-out portions and blocking portions disposed at intervals along a length direction of the grating structure.
In an embodiment of the invention, the plurality of hollowed-out portions and the blocking portion in the grating structure have the same size.
In an embodiment of the invention, the mower further comprises a height adjusting system, wherein the height adjusting system is used for controlling a height adjusting device in the mower; the heightening system comprises: the output shaft of the heightening motor is connected with the input end of the transmission structure; the input unit is used for inputting a starting signal of the heightening motor; the sensing assembly comprises a photoelectric door sensor connected with the cutting machine frame and lifting along with the cutting machine frame, and a grating structure arranged on the machine shell and used for recording the signal interruption times; the control unit is used for starting the height-adjusting motor according to the starting signal, simultaneously controlling the signal receiver to continuously receive the signal, and acquiring the actual height-adjusting distance according to the interruption times of the received signal; and stopping the height-adjusting motor if the actual height-adjusting distance reaches a preset height-adjusting distance.
The medium heightening method of the invention comprises the following steps: acquiring a preset heightening distance and a starting signal of a heightening motor; the control signal receiver continuously receives signals, and obtains the actual heightening distance 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 height-adjusting motor carries out next height-adjusting operation, the height-adjusting motor rotates until the cutter frame reaches the lowest ground clearance height or the highest ground clearance height, and the position of the cutter frame is the relative initial position.
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 height adjusting device, the mower and the height adjusting method 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. According to the invention, the cutter frame is connected in the support in a sliding manner through the guide mechanism and the damping mechanism, the guide mechanism and the damping mechanism can slide relatively along the length direction of the mounting groove so as to realize height adjustment and guide of the cutter frame, and in addition, the damping mechanism reduces the influence of vibration generated by the mower in the moving process on the cutter frame through the elastic buffering principle, so that the stability of the cutter frame is ensured.
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 a top view of an electric height adjustment device of a mower according to an embodiment of the present invention;
FIG. 4 is an exploded view 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 stand of an electric height adjusting device of a mower according to an embodiment of the present invention;
FIG. 7 is a schematic view of a cutter frame of an electric height adjustment device of a mower according to an embodiment of the present invention;
FIG. 8 is an enlarged view of a portion A of FIG. 6, mainly showing the structure of the photogate sensor;
FIG. 9 is an enlarged view of part B of FIG. 7, mainly showing the grating structure;
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 flow chart of a method for tuning up according to an embodiment of the invention;
FIG. 13 is a flow chart illustrating a method for tuning up according to an embodiment of the present invention;
FIG. 14 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; 220. a cutter frame; 221. a mounting groove; 222. a slot; 223. a motor is heightened; 230. a transmission assembly; 231. a screw sleeve; 232. a screw rod; 233. a drive gear; 233. a driven gear; 240. an induction assembly; 241. a photo gate sensor; 2411. a signal transmitter; 2412. a signal receiver; 242. a grating structure; 2421. a hollowed-out part; 2422. a blocking portion; 250. a control unit; 260. 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 14. 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 device includes a power machine and a cutting blade. 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 elevation device 200 includes a support 210, an elevation adjustment assembly, a drive assembly 230, an induction assembly 240, and a control unit 250, wherein the elevation adjustment assembly includes a cutter carriage 220 and an elevation adjustment motor 224; 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 a height-adjusting motor 224, a transmission assembly 230 and a cutter frame 220, wherein the cutter frame 220 is slidably connected with the support 210, and the height-adjusting motor 224 is in transmission connection with the cutter frame 220 through the transmission assembly 230, so that the cutter frame 220 can be lifted up and down reciprocally; the sensing assembly 240 is used to obtain the actual elevation distance of the cutter frame 220; the control unit 250 is electrically connected with the height-adjusting motor 224 and the sensing component 240, and can control the starting and stopping of the height-adjusting motor 224.
Referring to fig. 4, 5, 6 and 7, in the present embodiment, 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 during 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 be noted 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, a height adjustment motor 223 is fixed to the support 210 and is located between the support 210 and the cutter frame 220; the transmission assembly 230 drivingly connects the elevation motor 223 and the cutter frame 220 and converts rotational movement of the output shaft of the elevation motor 223 into linear movement of the cutter frame 220. Further, the transmission assembly 230 includes a screw sleeve 231, a screw rod 232, a driven gear 233 and a driving 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 the screw sleeve 231 is fixed at the top position 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 231 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 photogate sensor 241 and a grating structure 242. The photogate sensor 241 is connected to the dicing frame 220 and rises and falls along with the dicing frame 220, and it should be noted that the photogate sensor 241 includes a signal emitter 2411, a signal receiver 2412, and other components, where the signal emitter 2411 and the signal receiver 2412 are symmetrically arranged, a certain gap exists between the signal emitter 2411 and the signal receiver 2412, and is used for placing the grating structure 242, in addition, a slot 222 is formed on the top of the dicing frame 220, and the slot 222 is used for mounting the photogate sensor 241; the grating structure 242 is fixed on the support 210, the length direction of the grating structure 242 is arranged along the sliding direction of the cutter 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 hollowed-out portions 2421 and the blocking portion 2422 in the grating structure 242 have the same size.
In the present invention, as the signal emitter 2411 and the signal receiver 2412 are reciprocally lifted, the signal emitter 2411 and the signal receiver 2412 pass through the hollowed-out portion 2421 and the blocking portion 2422 in the grating structure 242 for multiple times, so that the signals in the photogate sensor 241 have interruption and communication processes, and the photogate sensor 241 obtains the actual height adjustment distance by recording the times of signal interruption; in this embodiment, the control unit 250 is electrically connected with the height-adjusting motor 223 and the photo-gate sensor 241, and the control unit 250 can receive the actual height-adjusting distance obtained by the photo-gate sensor 241 and compare with the preset height-adjusting distance stored in the control unit 250 in advance, so as to determine whether the height-adjusting motor 223 needs to work, thereby achieving the effect of accurate adjustment.
When the height is adjusted, a preset height adjusting distance is input, the height adjusting motor 223 is started, the height adjusting motor 223 starts to operate, and the rotary motion output by the height adjusting motor 223 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 223, the signal emitter 2411 continuously emits signals, the signal receiver 2412 continuously receives signals, the emitted signals are blocked by the blocking parts 2422 and pass through the hollowed parts 2421 alternately, so that when the signal receiver 2412 receives signals, the signals are blocked once by the blocking parts 2422, the signals are interrupted once, and in view of the fact that the output end of the height-adjusting motor 231 rotates for a certain number of times by a certain number of times, the number of times of signal blocking is equal to the number of times of the blocking parts 2422, the control unit 250 can obtain 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 223 automatically stops operating.
In an actual implementation, the signal emitted by the signal emitter 2411 may be an optoelectronic signal.
It should be noted that, in the actual implementation process, the number of times the signal is received through the hollow part 2421, the number of times the received signal changes from receiving the interrupt, and the number of times the received signal changes from interrupting to receiving may be equal to the number of times the received signal is interrupted, which are used as the basis for obtaining the actual height adjustment distance.
Referring to fig. 10, in the present invention, the electric power up-regulating device further includes a up-regulating system for controlling the electric power up-regulating device 200; the heightening system includes a heightening motor 223, an input unit 260, an induction component 240, and a control unit 250. An output shaft of the heightening motor 223 is connected with an input end of the conveying structure; the input unit 260 is electrically connected to the control unit 250, and is used for inputting a preset up-adjustment distance and a start signal to the motor 2223; the sensing assembly 240 includes a photo gate sensor 241 connected to the cutter frame 220 and ascending and descending with the cutter frame 220, a grating structure 242 provided on the support 210 for recording the number of signal interruption, and the photo gate sensor 241 is electrically connected to the control unit 250; the control unit 250 is configured to start the heightening motor 223 according to the start signal, and simultaneously control the signal receiver 2412 to continuously receive the signal, and obtain an actual heightening distance according to the number of times of interruption of the received signal; if the actual heightening distance reaches the preset heightening distance, the heightening motor 223 is stopped, otherwise, the heightening motor 223 continues to operate.
The input unit 260 and the control unit 250 are functional modules, and these functional modules may be fully or partially integrated into one physical entity 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 250 includes a processor and a memory that records and stores the current position of the cutter carriage 220 when the elevation motor 223 is deactivated, the control unit 250 taking the current position as the relative initial position for the next elevation adjustment.
In some embodiments of the present invention, the control unit 250 includes a processor, and when the elevation adjustment motor completes one elevation adjustment operation and needs to perform the next elevation adjustment operation, the elevation adjustment motor 223 rotates until the cutter frame 220 reaches the lowest elevation or the highest elevation, at which time the cutter frame 220 is located at 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 260 may be directly disposed on the mower, or other remote terminals may be used; the control unit 250 may be disposed on the electric height-adjusting device 200, or may be disposed directly on other parts of the mower, and when communication with the outside is required, the control unit 250 further includes a communicator connected to the processor, and remote control can be achieved 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 to 14, the present invention further provides a height adjusting method, 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 the heightening motor 223;
s02, controlling the signal receiver to continuously receive signals, and acquiring an actual heightening distance according to the number of times of interruption of the received signals;
s03, stopping the height-adjusting motor 223 if the actual height-adjusting distance reaches a preset height-adjusting distance.
Referring to fig. 12, in some embodiments of the present invention, the method for heightening further includes S04: when the elevation motor 223 is stopped, the current position of the cutter frame 220 is stored and taken as the relative initial position for the next elevation adjustment.
Referring to fig. 13, in some embodiments of the present invention, the method for heightening further includes S00: when the electric elevating device 200 is started, the elevating motor 223 rotates until the cutter frame 220 reaches the lowest or highest elevation, and the cutter frame 220 is at the relative initial position.
Referring to fig. 14, in some embodiments of the present invention, the method for heightening further includes S01.1: the output shaft of the elevation motor 223 is controlled to rotate forward or backward according to the positional relationship between the preset elevation distance and the relative initial position, so that the cutter frame 220 is raised or lowered accordingly.
In summary, the triggering signal is obtained through the sensing component 240, the actual height adjustment distance is determined by the frequency of signal interruption received by the signal receiver 2412, and when the actual height adjustment distance reaches the preset height adjustment distance, the height adjustment motor 223 is controlled to stop running, so that on one hand, manual height adjustment is not required, and remote control is facilitated; on the other hand, precise control of the height adjustment of the cutting frame 220 may be achieved. 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 (13)

1. A mower, comprising:
a housing;
a cutting motor driving at least one cutting blade;
a height adjustment assembly comprising a height adjustment motor capable of driving a cutter frame through a transmission assembly to vary its height, the cutter frame providing a structure capable of receiving and supporting the cutter motor, the cutter frame being movable along the housing in a height adjustment direction;
a control unit controlling rotation of the elevation motor based at least in part on a current elevation of the cutter frame;
the sensing assembly is capable of detecting the current height of the cutter frame and transmitting current height information to the control circuit, and comprises a sensor and a grating structure, wherein one of the sensor and the grating structure is located on the cutter frame.
2. The mower of claim 1, wherein: the transmission assembly comprises a screw rod and a screw sleeve, the screw rod is driven to rotate by the height-adjusting motor, the external threads of the screw rod are meshed with the internal threads of the screw sleeve, and the screw sleeve is connected to the cutting machine frame.
3. The mower of claim 1, wherein: the sensor is a photoelectric door sensor and comprises a signal transmitter and a signal receiver, wherein the signal transmitter and the signal receiver are positioned on two sides of the grating structure, and signals between the signal transmitter and the signal receiver can be blocked periodically by the grating structure.
4. The mower of claim 1, wherein: the output shaft of the height-adjusting motor is provided with a driving gear, the end part of the screw rod is provided with a driven gear, and the driving gear is meshed with the driven gear.
5. The mower of claim 1, wherein: the machine shell is fixedly provided with a guide mechanism which is arranged between the support and the cutting machine frame and used for guiding the movement direction of the cutting machine frame.
6. A lawnmower as claimed in claim 3 wherein: the cutting machine frame is provided with a groove for installing the photoelectric door sensor.
7. A lawnmower as claimed in claim 3 wherein: the grating structure comprises a plurality of hollowed-out parts and blocking parts which are arranged at intervals along the length direction of the grating structure.
8. The mower of claim 7, wherein: the size of the plurality of hollowed-out parts and the size of the blocking part in the grating structure are the same.
9. The mower of claim 1, wherein: the system also comprises a height adjusting system, wherein the height adjusting system is used for controlling a height adjusting device in the mower;
the heightening system comprises:
the output shaft of the heightening motor is connected with the input end of the transmission structure;
the input unit is used for inputting a starting signal of the heightening motor;
the sensing assembly comprises a photoelectric door sensor connected with the cutting machine frame and lifting along with the cutting machine frame, and a grating structure arranged on the machine shell and used for recording the signal interruption times;
the control unit is used for starting the height-adjusting motor according to the starting signal, simultaneously controlling the signal receiver to continuously receive the signal, and acquiring the actual height-adjusting distance according to the interruption times of the received signal;
and stopping the height-adjusting motor if the actual height-adjusting distance reaches a preset height-adjusting distance.
10. A method of heightening, comprising:
acquiring a preset heightening distance and a starting signal of a heightening motor;
the control signal receiver continuously receives signals, and obtains the actual heightening distance 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.
11. The heightening method according to claim 10, 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.
12. The heightening method according to claim 10, characterized in that: the heightening method further comprises the following steps: when the height-adjusting motor carries out next height-adjusting operation, the height-adjusting motor rotates until the cutter frame reaches the lowest ground clearance height or the highest ground clearance height, and the position of the cutter frame is the relative initial position.
13. The heightening method according to claim 12, 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.
CN202111494155.1A 2021-10-28 2021-12-08 Mower and height adjusting method Pending CN116235681A (en)

Priority Applications (2)

Application Number Priority Date Filing Date Title
CN202111494155.1A CN116235681A (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
CN202111494155.1A CN116235681A (en) 2021-12-08 2021-12-08 Mower and height adjusting method

Publications (1)

Publication Number Publication Date
CN116235681A true CN116235681A (en) 2023-06-09

Family

ID=86633672

Family Applications (1)

Application Number Title Priority Date Filing Date
CN202111494155.1A Pending CN116235681A (en) 2021-10-28 2021-12-08 Mower and height adjusting method

Country Status (1)

Country Link
CN (1) CN116235681A (en)

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