Chassis height adjustment device and mower

Abstract

A chassis height adjustment device, comprising an adjustment base (100), a drive assembly (200), a control module, a front axle assembly (300) and a rear axle assembly (400) for bearing a mower body, and a rod body assembly (500). The rod body assembly (500) is connected to the drive assembly (200), the front axle assembly (300), and the rear axle assembly (400); the drive assembly (200) can drive the rod body assembly (500) to drive the front axle assembly (300) and the rear axle assembly (400) to raise or lower the mower body; the rod body assembly (500) is provided with a trigger member (600), the adjustment base (100) is provided with a plurality of trigger switches (700) matching the trigger member (600), the plurality of trigger switches (700) are all arranged on the movement trajectory of the trigger member (600), and the plurality of trigger switches (700) are all connected to the control module. During the raising or lowering of the mower body, the trigger member (600) is suitable for selectively interacting with one of the trigger switches (700); and when the trigger member (600) interacts with a trigger switch (700), the control module controls the drive assembly (200) to stop raising or lowering the mower body, thereby achieving the height gear adjustment of a mower chassis, which is time-saving and labor-saving. Further disclosed is a mower.

Description

Chassis height adjusting device and lawn mower TECHNICAL FIELD

[0001] The present application relates to the technical field of lawn mowers, and particularly relates to a chassis height adjusting device and a lawn mower. BACKGROUND

[0002] A lawn mower is a commonly used mechanical garden tool for trimming lawns and grasslands, which can help people quickly and efficiently complete the mowing work. The lawn mower mainly comprises a chassis, an engine, a walking mechanism, a cutting part, an operating device and the like. In order to make the lawn mower have different mowing heights, the existing lawn mower is generally equipped with a chassis height adjusting device, which drives the cutting part to move up and down by adjusting the height of the chassis to adjust the height of the cutting part, so as to meet the mowing requirements of different lawns.

[0003] However, the chassis height adjusting device of the existing lawn mower has the following problems: 1. The connecting rod assembly in the chassis height adjusting device has a complex structure, the manufacturing cost is relatively high, and the chassis height adjusting device is prone to failure during use; 2. The chassis height adjusting device is manually adjusted, and the user needs to manually operate the adjusting part to adjust the height of the chassis. Moreover, the adjusting mode is stepless adjustment, and the chassis height cannot be quickly and accurately adjusted to a certain specific height during the adjusting process, which is time-consuming and laborious. SUMMARY

[0004] An object of the present application is to provide a chassis height adjusting device with a simple structure and convenient adjusting operation.

[0005] Another object of the present application is to provide a lawn mower.

[0006] To achieve the above objects, the technical scheme adopted by the present application is as follows: a chassis height adjusting device, comprising:

[0007] an adjusting base;

[0008] a front axle assembly and a rear axle assembly for supporting a lawn mower main body, the front axle assembly and the rear axle assembly being operable to lift or lower the lawn mower main body;

[0009] a driving assembly provided on the adjusting base and connected with a control module, the control module being adapted to control the driving assembly to start or stop;

[0010] a rod body assembly connected with the driving assembly, the front axle assembly and the rear axle assembly respectively, the driving assembly being capable of driving the rod body assembly to drive the front axle assembly and the rear axle assembly to lift or lower the lawn mower main body;

[0011] The rod body assembly is provided with a trigger, which moves with the movement of the rod body assembly. The adjusting base is provided with a plurality of trigger switches matched with the trigger. The plurality of trigger switches are arranged on the activity track of the trigger. The plurality of trigger switches are connected with the control module. During the lifting or lowering of the mower body, the trigger is adapted to interact with the trigger switch. When the trigger interacts with the trigger switch, the control module controls the driving assembly to stop lifting or lowering the mower body.

[0012] As a first preferred, the trigger switches are arranged in two columns in staggered arrangement. The trigger switches in each column are arranged on the adjusting base in a spaced manner.

[0013] Further preferably, the trigger includes two trigger tabs arranged opposite to each other. The two trigger tabs correspond to a column of trigger switches respectively. A single trigger switch includes two electrodes arranged opposite to each other. The two electrodes are arranged in a spaced manner to form a trigger channel. The trigger tab is adapted to slide into the trigger channel to contact the two electrodes to turn on the trigger switch.

[0014] As a second preferred, the trigger switches are arranged in a column on the adjusting base in a spaced manner. The trigger includes one trigger tab. A single trigger switch includes two electrodes arranged opposite to each other. The two electrodes are arranged in a spaced manner to form a trigger channel. The trigger tab is adapted to slide into the trigger channel to contact the two electrodes to turn on the trigger switch.

[0015] Further preferably, the two electrodes are in an arc shape so that the width of the two ends of the trigger channel is greater than the width of the middle of the trigger channel. The width of the two ends of the trigger channel is greater than the thickness of the trigger tab. The width of the middle of the trigger channel is not greater than the thickness of the trigger tab.

[0016] As a third preferred, the trigger includes two trigger tabs arranged opposite to each other. The two trigger tabs correspond to a column of trigger switches respectively. A single trigger switch includes two electrodes. The trigger tab is adapted to slide above the two electrodes to contact the two electrodes to turn on the trigger switch.

[0017] As a fourth preferred, the trigger switches are arranged in a column on the adjusting base in a spaced manner. The trigger includes one trigger tab. A single trigger switch includes two electrodes. The trigger tab is adapted to slide above the two electrodes to contact the two electrodes to turn on the trigger switch.

[0018] Further preferably, both of the electrode pieces are in an upwardly convex arc shape, and the trigger piece is in a downwardly convex arc shape.

[0019] As a fifth preferred embodiment, the trigger piece comprises two trigger pivots, which are arranged opposite to each other and correspond to a row of the trigger switches, and the trigger switches are micro switches, and the trigger pivots are adapted to slide to the corresponding positions of the micro switches to trigger the micro switches.

[0020] As a sixth preferred embodiment, the trigger switches are arranged in a row on the adjusting base, and the trigger piece comprises one trigger pivot, and the trigger switches are micro switches, and the trigger pivot is adapted to slide to the corresponding positions of the micro switches to trigger the micro switches.

[0021] As an extension of the above six preferred embodiments, the rod assembly comprises a front support rod and a rear support rod hingedly connected to each other, the bottom end of the front support rod is connected to the driving assembly, the bottom end of the rear support rod is hingedly connected to the adjusting base, the front support rod is in transmission connection with the front axle assembly and the rear axle assembly, and the driving assembly can drive the bottom end of the front support rod to move close to or away from the bottom end of the rear support rod to drive the front axle assembly and the rear axle assembly to lift or lower the mower body.

[0022] Further, the driving assembly comprises a driving motor, a driven screw, and a sliding rod, the driven screw is in transmission connection with the driving motor, the sliding rod is threadedly fitted on the driven screw, the side wall of the adjusting base is provided with a limiting groove matched with the sliding rod, and the two ends of the sliding rod are rotatably connected with the bottom end of the front support rod through the limiting groove.

[0023] Further, the front support rod and the front axle assembly are connected through a first connecting rod, the front support rod and the rear axle assembly are connected through a second connecting rod, the middle part of the front support rod is provided with a hinged rod, one end of the first connecting rod and one end of the second connecting rod are respectively hingedly connected with the hinged rod, the other end of the first connecting rod is hingedly connected with the front axle assembly, and the other end of the second connecting rod is hingedly connected with the rear axle assembly.

[0024] Further, the front axle assembly comprises a front wheel axle and a front axle connecting piece, the front wheel axle comprises first axle bodies connected with front wheels at two ends and a second axle body arranged between the first axle bodies for supporting the mower main body, the first axle bodies and the second axle body are arranged in a staggered manner so that the front wheel axle as a whole is in a crankshaft shape, the front axle connecting piece is arranged on the second axle body, the first connecting rod is hinged to the front axle connecting piece, and then the first connecting rod can pull the front wheel axle to rotate to lift or lower the mower main body; the rear axle assembly comprises a rear wheel axle for supporting the mower main body and a rear axle connecting piece connected with rear wheels, the rear wheel axle is arranged on the rear axle connecting piece, the second connecting rod is hinged to the rear axle connecting piece, and the rear wheel axle, the second connecting rod and the connecting point of the rear wheels on the rear axle connecting piece are arranged in a triangular shape, and then the second connecting rod can pull the rear axle connecting piece to rotate to lift or lower the mower main body.

[0025] The application also provides a mower comprising the above-mentioned chassis height adjusting device.

[0026] Compared with the prior art, the application has the following beneficial effects:

[0027] The chassis height adjusting device provided by the application drives the front axle assembly and the rear axle assembly to lift or lower the mower main body through the driving assembly and the rod body assembly, has a simple overall structure, can simultaneously adjust the front axle and the rear axle of the mower, keeps the chassis height of the mower always horizontal during the adjustment process, and avoids the height difference between the front axle and the rear axle; the trigger piece is arranged on the rod body assembly, the adjusting base is provided with a plurality of matched trigger switches, the trigger piece and the trigger switches are attached to mechanical parts related to the mower chassis height adjustment, and no new fixing piece needs to be added, and further, the trigger switches are arranged on the moving track of the rod body assembly in a staggered manner, and then during the lifting or lowering process of the mower main body, the trigger piece is adapted to interact with the trigger switches, when the trigger piece interacts with the trigger switches, the control module controls the driving assembly to stop, the lifting or lowering of the mower main body is ended, and thus the gear adjustment of the mower chassis height is realized. BRIEF DESCRIPTION OF DRAWINGS

[0028]

[0029] Fig. 1 is a schematic view of the chassis height adjusting device of the application.

[0030] Fig. 2 is a schematic view of the adjusting base, the driving assembly and the rod body assembly in the chassis height adjusting device of the application.

[0031] Fig. 3 is a schematic view of an embodiment in which the trigger piece and the trigger switch are in an electrically conductive scheme and the trigger switches are arranged in two rows in a staggered manner.

[0032] Fig. 4 is a schematic view of a front axle assembly of the chassis height adjustment device of the present application.

[0033] Fig. 5 is a schematic view of a rear axle assembly of the chassis height adjustment device of the present application.

[0034] Fig. 6 is a schematic view of another embodiment of the present application in which the trigger and the trigger switch are electrically connected and the trigger switch is in two columns and staggered.

[0035] Fig. 7 is a schematic view of an embodiment of the present application in which the trigger and the trigger switch are electrically connected and the trigger switch is in a single column.

[0036] Fig. 8 is a schematic view of an embodiment of the present application in which the trigger switch is a micro switch scheme and the micro switch is in two columns and staggered.

[0037] In the drawings: 100, adjustment base; 110, limiting groove; 120, accommodating groove; 200, driving assembly; 210, driving motor; 220, driven screw; 230, sliding rod; 300, front axle assembly; 310, front axle; 311, first shaft body; 312, second shaft body; 320, front axle connecting piece; 400, rear axle assembly; 410, rear axle; 420, rear axle connecting piece; 500, rod body assembly; 510, front support rod; 520, rear support rod; 530, first connecting rod; 540, second connecting rod; 550, hinged shaft; 600, trigger; 610, trigger tab; 620, trigger spring; 700, trigger switch; 710, electrode piece. DETAILED DESCRIPTION

[0038] Hereinafter, the present application will be further described in conjunction with specific embodiments, and it should be noted that the following described embodiments or technical features can be combined in any manner to form new embodiments without conflict.

[0039] In the description of the present application, it should be noted that for orientation words such as the terms "center", "transverse", "longitudinal", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", etc. indicate the orientation and positional relationship based on the orientation or positional relationship shown in the drawings, and are only for the convenience of describing the present application and simplifying the description, and are not intended to indicate or imply that the devices or elements referred to must have a particular orientation, be constructed and operated in a particular orientation, and cannot be understood as limiting the specific protection scope of the present application.

[0040] It should be noted that the terms "first", "second", etc. in the specification and claims of the present application are used to distinguish similar objects, and do not necessarily describe a specific order or sequence.

[0041] The terms "comprise" and "comprising", and any variations thereof, as used in the specification and claims of this application, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of steps or units does not necessarily comprise only those steps or units but can include other steps or units not expressly listed or inherent to such process, method, article, or apparatus.

[0042] As shown in FIGS. 1-5, the embodiment provides a chassis height adjusting device, which comprises an adjusting base 100, a driving assembly 200, a control module (not shown in the figures), a front axle assembly 300, a rear axle assembly 400, and a rod assembly 500. The front axle assembly 300 is connected with front wheels, and the rear axle assembly 400 is connected with rear wheels. The front axle assembly 300 and the rear axle assembly 400 are adapted to support a lawn mower body. The driving assembly 200 is arranged on the adjusting base 100 and is connected with the control module circuit. The rod assembly 500 is connected with the driving assembly 200, the front axle assembly 300, and the rear axle assembly 400. A user can press an adjusting button to make the control module control the driving assembly 200 to work. The driving assembly 200 drives the rod assembly 500 to slide to drive the front axle assembly 300 and the rear axle assembly 400 to lift or lower the lawn mower body, thereby realizing the adjustment of the chassis height of the lawn mower.

[0043] As shown in FIGS. 2-3, the drive assembly 200 includes a drive motor 210, a driven screw 220, and a sliding rod 230. The drive motor 210 is disposed at the front end of the adjustment base 100 and is electrically connected to the control module circuit. The driven screw 220 is drivingly connected to the output shaft of the drive motor 210, and the drive motor 210 can drive the driven screw 220 to rotate along its own axis. The sliding rod 230 is threadedly disposed on the driven screw 220. The side wall of the adjustment base 100 is provided with a limiting groove 110 matched with the sliding rod 230, and both ends of the sliding rod 230 are disposed in the limiting groove 110. Thus, the driven screw 220 can be rotated to drive the sliding rod 230 to slide along the limiting groove 110. The rod assembly 500 includes a front support rod 510 and a rear support rod 520. The top end of the front support rod 510 is hingedly connected to the top end of the rear support rod 520. The bottom end of the front support rod 510 is hingedly connected to the sliding rod 230, and the bottom end of the rear support rod 520 is hingedly connected to the adjustment base 100. The front support rod 510 and the rear support rod 520 have a V-shaped structure. The rod assembly 500 further includes a first connecting rod 530 and a second connecting rod 540. The first connecting rod 530 is adapted to connect the front support rod 510 and the front axle assembly 300, and the second connecting rod 540 is adapted to connect the front support rod 510 and the rear axle assembly 400. The middle part of the front support rod 510 is provided with a hinge shaft 550. One end of each of the first connecting rod 530 and the second connecting rod 540 is hingedly connected to the hinge shaft 550. The other end of the first connecting rod 530 is hingedly connected to the front axle assembly 300, and the other end of the second connecting rod 540 is hingedly connected to the rear axle assembly 400. Based on the above structure, the drive motor 210 can drive the driven screw 220 to rotate, so that the sliding rod 230 slides in the limiting groove 110 and drives the front support rod 510 to move forward and backward to approach or move away from the rear support rod 520. The front support rod 510 drives the front axle assembly 300 and the rear axle assembly 400 to lift or lower the lawn mower body through the first connecting rod 530 and the second connecting rod 540.

[0044] Further, as shown in FIGS. 4-5, the front axle assembly 300 includes a front axle 310 and a front axle connecting piece 320, the front axle 310 includes first axle bodies 311 connected with front wheels at two ends and a second axle body 312 arranged between the first axle bodies 311 for supporting the mower body, the first axle bodies 311 and the second axle body 312 are arranged staggered, so that the front axle 310 as a whole is in the shape of a crankshaft, the front axle connecting piece 320 is fixedly arranged on the second axle body 312, the first connecting rod 530 is hinged with the front axle connecting piece 320, and then the first connecting rod 530 can be moved forward and backward under the driving of the front support rod 510 to rotate the front axle 310 to lift or lower the ride height of the mower. The rear axle assembly 400 includes a rear axle 410 for supporting the mower body and a rear axle connecting piece 420 connected with rear wheels, the rear axle 410 is arranged on the rear axle connecting piece 420, the second connecting rod 540 is hinged with the rear axle connecting piece 420, and the rear axle 410, the second connecting rod 540 and the connecting point of the rear wheels on the rear axle connecting piece 420 are arranged in a triangular shape, and then the second connecting rod 540 can be moved forward and backward under the driving of the front support rod 510 to rotate the rear axle connecting piece 420, and the rotation of the rear axle connecting piece 420 can lift or lower the ride height of the mower.

[0045] Further, the rod assembly 500 is further provided with a trigger piece 600, the trigger piece 600 moves with the movement of the rod assembly 500, the adjusting base 100 is provided with a plurality of trigger switches 700 matched with the trigger piece 600, the plurality of trigger switches 700 are arranged at intervals on the activity track of the rod assembly 500, and the plurality of trigger switches 700 are connected with the control module, and then in the process that the driving assembly 200 drives the rod assembly 500 to slide, the trigger piece 600 cooperates with each trigger switch 700 alternatively. When the trigger piece 600 cooperates with the trigger switch 700, the trigger switch 700 is triggered to send an electric signal to the control module, and the control module controls the driving assembly 200 to stop when receiving the electric signal, so as to stop adjusting the ride height of the mower. That is to say, the user presses the adjusting button each time, and the driving assembly 200 drives the rod assembly 500 to move a fixed stroke, and the length of the stroke is the distance between two adjacent trigger switches 700. Since the rod assembly 500 only moves a fixed stroke each time, the rod assembly 500 can only lift or lower the mower body by a fixed height, so as to realize the electric gear adjustment of the ride height of the mower, saving time and effort.

[0046] Referring to FIG. 3, FIG. 6 and FIG. 8, the trigger switches 700 are arranged in two columns in staggered arrangement, and the trigger switches 700 in each column are arranged at intervals on the adjusting base 100. Due to the limited space inside the mower, the length of the adjusting base 100 is limited, and the trigger switches 700 themselves also have a certain length size. If the trigger switches 700 are arranged in a column at intervals, the interval between the two trigger switches 700 will be relatively far, and the adjusting height of the chassis of the mower each time is related to the interval between the two trigger switches 700, so as to cause the span between the two adjacent gears of the height adjustment of the chassis of the mower to be large, and the practicability is poor. In the chassis height adjusting device, the trigger switches 700 are arranged in two columns in staggered arrangement, which can reduce the interval between the two trigger switches 700, thereby reducing the span between the two gears, and increasing the number of gears, so that the mower has multiple different mowing heights to meet different needs.

[0047] Further, referring to FIG. 3, the trigger 600 and the trigger switch 700 are triggered by the electrically conductive scheme, the trigger 600 is arranged at the bottom end of the front support rod 510, the trigger 600 includes two trigger inserts 610, the two trigger inserts 610 are arranged opposite to each other, and the two trigger inserts 610 correspond to a column of trigger switches 700 respectively, a single trigger switch 700 includes two electrode pieces 710 arranged opposite to each other, the two electrode pieces 710 are arranged at intervals to form a trigger channel therebetween, the trigger 600 can slide with the front support rod 510, so that the trigger insert 610 slides into the trigger channel and contacts the two electrode pieces 710 to conduct the trigger switch 700. Since the trigger switches 700 are arranged in two columns in staggered arrangement, when the trigger switch 700 is conducted, only one of the two trigger inserts 610 on the trigger 600 contacts the two electrode pieces 710 on the trigger switch 700. Preferably, the two electrode pieces 710 are in arc shape, so that the width of the trigger channel at both ends is greater than the width in the middle, and the width of the trigger channel at both ends is greater than the thickness of the trigger insert 610, and the width of the trigger channel in the middle is less than the thickness of the trigger insert 610, so as to ensure that the trigger insert 610 can smoothly slide in and out of the trigger channel and ensure that the trigger insert 610 can contact the electrode piece 710 to conduct.

[0048] Specifically, when the user presses the adjustment button to send a signal to raise or lower the chassis height, the control module controls the driving motor 210 to work, the driving motor 210 drives the driven screw 220 to rotate, so that the sliding rod 230 drives the bottom end of the front support rod 510 and the trigger piece 600 to slide forward and backward, the front support rod 510 slides forward and backward and further drives the front axle assembly 300 and the rear axle assembly 400 to lift or lower the lawn mower body through the first connecting rod 530 and the second connecting rod 540, until the trigger piece 600 slides to the adjacent another trigger switch 700 from a trigger switch 700, the trigger tab 610 contacts the two electrode sheets 710 to make them conductive, sending an electrical signal to the control module, the control module controls the driving motor 210 to stop working after receiving the electrical signal, the front axle assembly 300 and the rear axle assembly 400 stop lifting or lowering the lawn mower body, and the front support rod 510 slides a fixed stroke each time, and the front axle assembly 300 and the rear axle assembly 400 also lift or lower the lawn mower body by a fixed height.

[0049] In other embodiments (not shown in the drawings), the trigger switch 700 is arranged in a row on the adjustment base 100, the trigger piece 600 includes a trigger tab 610, and a single trigger switch 700 includes two electrode sheets 710 arranged opposite to each other, the two electrode sheets 710 are arranged at intervals and form a trigger channel, and the trigger tab 610 is adapted to slide into the trigger channel and contact the two electrode sheets 710 to make the trigger switch 700 conductive. This scheme is suitable for lawn mowers with larger size or fewer gears, and there is enough space on the adjustment base 100 to accommodate a single row of trigger switches 700.

[0050] In other embodiments, as shown in FIG. 6, the trigger piece 600 includes two trigger tabs 620, the two trigger tabs 620 correspond to a row of trigger switches 700 respectively, a single trigger switch 700 includes two electrode sheets 710, and the trigger piece 600 can slide with the front support rod 510, so that the trigger tab 620 slides to contact the two electrode sheets 710 to make the trigger switch 700 conductive. Since the trigger switch 700 is arranged in two rows in a staggered manner, when the trigger switch 700 is conductive, only one of the two trigger tabs 620 on the trigger piece 600 contacts the two electrode sheets 710 on the trigger switch 700. Further, the two electrode sheets 710 are both in the shape of an upwardly convex arc, and the trigger tab 620 is in the shape of a downwardly convex arc, which can ensure the success rate of the conduction of the two electrode sheets 710, and at the same time, the trigger piece 600 and the trigger switch 700 can also have a longer service life.

[0051] In another embodiment, as shown in Fig. 7, the trigger switches 700 are arranged in a row on the adjusting base 100, the trigger member 600 comprises a trigger spring 620, and each trigger switch 700 comprises two electrode pieces 710, when the trigger switch 700 is turned on, the trigger spring 620 is in contact with the two electrode pieces 710 of the trigger switch 700 at the same time, thereby turning on the trigger switch 700. This scheme is suitable for the lawn mower with large size or less gears, and there is enough space on the adjusting base 100 to arrange the trigger switches 700 in a row.

[0052] In another embodiment, as shown in Fig. 8, the trigger member 600 and the trigger switch 700 are realized by the micro switch, specifically, the trigger member 600 is in the form of a trigger fulcrum, and the trigger switch 700 is a micro switch.

[0053] Specifically, the adjusting base 100 is provided with a plurality of micro switches connected with the driving assembly 200 in circuit, and the micro switches are arranged at intervals on the sliding track of the rod assembly 500, the micro switches can be triggered by the rod assembly 500 to stop the driving of the driving assembly 200, thereby the rod assembly 500 is driven by the driving assembly 200 only between two adjacent micro switches each time, and the rod assembly 500 only drives the front axle assembly 300 and the rear axle assembly 400 to rotate a fixed angle, thereby lifting or lowering the chassis height of the lawn mower by a fixed height, realizing the gear adjustment of the chassis height of the lawn mower, so that the lawn mower can have different mowing heights.

[0054] The adjusting base 100 is further provided with a containing groove 120, the micro switches are arranged at intervals in the containing groove 120 along the moving direction of the front support rod 510, the trigger fulcrum is arranged in the containing groove 120 above the micro switches, when the front support rod 510 is moved by the sliding rod 230, the trigger fulcrum can abut against the micro switch to trigger the micro switch, when the micro switch is triggered, the driving motor 210 stops working, and the driving motor 210 no longer drives the sliding rod 230 to slide, so that the sliding rod 230 only drives the front support rod 510 to move between two adjacent micro switches each time, thereby realizing the gear adjustment of the chassis height of the lawn mower.

[0055] As preferred, the microswitches are arranged in two rows in the accommodation groove 120, the two rows of microswitches are arranged staggeredly, the trigger member 600 comprises two trigger fulcrums, the two trigger fulcrums are arranged oppositely and in parallel, and the two trigger fulcrums correspond to one row of microswitches respectively. Since the internal space of the mower is limited, the length of the adjusting base 100 is limited, and the microswitch itself also has a certain length. If the microswitches are arranged in one row and spaced, the distance between the two microswitches is large, and the distance of the front support rod 510 is also large, thereby causing the span between the adjacent two levels of the height adjustment of the base of the mower to be large, and the practicability is poor. The microswitches are arranged in two rows and staggered, which can reduce the distance between the adjacent two microswitches, reduce the distance of the front support rod 510, and make the span between the adjacent two levels of the height adjustment of the base of the mower small, and the number of levels is also more, the mower has different mowing heights, and meets different use requirements.

[0056] In other embodiments (not shown), the microswitches are arranged in one row and spaced on the adjusting base 100, the trigger member 600 comprises one trigger fulcrum, the trigger switch 700 is a microswitch, and the trigger fulcrum is adapted to slide to the corresponding position of the microswitch to trigger the microswitch. This scheme is suitable for mowers with large size or fewer levels, and the adjusting base 100 has enough space to accommodate single-row microswitches.

[0057] The application also provides a mower comprising the above base height adjusting device.

[0058] The above describes the basic principles, main features and advantages of the application. It should be understood by those skilled in the art that the application is not limited to the above embodiments, and the above embodiments and descriptions in the specification are only the principles of the application. Without departing from the spirit and scope of the application, various changes and improvements can be made to the application, and these changes and improvements all fall within the scope of the claimed application. The scope of protection claimed by the application is defined by the appended claims and their equivalents.

Claims

1. A ride height adjustment device, characterized in that, The application relates to a lawn mower, which comprises a regulating base, a front axle assembly and a rear axle assembly for supporting a lawn mower body, the front axle assembly and the rear axle assembly being operable to lift or lower the lawn mower body, a driving assembly arranged on the regulating base and connected with a control module, the control module being adapted to control the driving assembly to start or stop, a rod body assembly connected with the driving assembly, the front axle assembly and the rear axle assembly respectively, the driving assembly being capable of driving the rod body assembly to drive the front axle assembly and the rear axle assembly to lift or lower the lawn mower body, a trigger piece arranged on the rod body assembly and moving with the rod body assembly, a plurality of trigger switches arranged on the regulating base and matched with the trigger piece, the trigger switches being arranged on the moving track of the trigger piece, the trigger switches being connected with the control module, the trigger piece being adapted to interact with the trigger switches selectively during the lifting or lowering of the lawn mower body, and the control module being adapted to control the driving assembly to stop lifting or lowering the lawn mower body when the trigger piece interacts with the trigger switches. The trigger switches are arranged in two rows of staggered arrangement, and the trigger switches in each row are arranged on the regulating base in a spaced manner. The trigger piece comprises two trigger tabs arranged oppositely and in parallel, and the trigger tabs correspond to the trigger switches in one row respectively, each trigger switch comprises two electrode tabs arranged oppositely, the electrode tabs are arranged in a spaced manner and form a trigger channel, and the trigger tabs are adapted to slide into the trigger channel and contact the electrode tabs to turn on the trigger switches. The trigger switches are arranged in one row on the regulating base, the trigger piece comprises one trigger tab, each trigger switch comprises two electrode tabs arranged oppositely, the electrode tabs are arranged in a spaced manner and form a trigger channel, and the trigger tab is adapted to slide into the trigger channel and contact the electrode tabs to turn on the trigger switches. The electrode tabs are in arc shapes, the width of the trigger channel at two ends is greater than the width of the trigger channel in the middle, and the width of the trigger channel at two ends is greater than the thickness of the trigger tab, and the width of the trigger channel in the middle is not greater than the thickness of the trigger tab. The trigger piece comprises two trigger tabs arranged oppositely and in parallel, and the trigger tabs correspond to the trigger switches in one row respectively, each trigger switch comprises two electrode tabs arranged oppositely, the trigger tabs are adapted to slide above the electrode tabs and contact the electrode tabs to turn on the trigger switches.

2. The ride height adjustment device of claim 1, wherein, The trigger switches are arranged in one row on the regulating base, the trigger piece comprises one trigger tab, each trigger switch comprises two electrode tabs arranged oppositely, the trigger tabs are adapted to slide above the electrode tabs and contact the electrode tabs to turn on the trigger switches.

3. The ride height adjustment device of claim 2, wherein, The electrode tabs are in arc shapes, and the trigger tabs are in arc shapes.

4. The ride height adjustment device of claim 1, wherein, ​ 5. A chassis height adjustment device as claimed in claim 3 or 4, characterised in that, ​ 6. The ride height adjustment device of claim 2, wherein, ​ 7. The ride height adjustment device of claim 1, wherein ​ 8. A chassis height adjustment device as claimed in claim 6 or 7, characterised in that, ​ 9. The ride height adjustment device of claim 2, wherein, The trigger member comprises two trigger fulcrums, which are arranged opposite to each other and correspond to a row of trigger switches, the trigger switches are micro switches, and the trigger fulcrums are adapted to slide to the corresponding positions of the micro switches to trigger the micro switches.

10. The ride height adjustment device of claim 1, wherein, The trigger switches are arranged on the adjusting base in a row, the trigger member comprises one trigger fulcrum, the trigger switches are micro switches, and the trigger fulcrum is adapted to slide to the corresponding position of the micro switch to trigger the micro switch.

11. The ride height adjustment device of claim 1, wherein, The rod body assembly comprises a front supporting rod and a rear supporting rod which are hingedly connected to each other, the bottom end of the front supporting rod is connected to the driving assembly, the bottom end of the rear supporting rod is hingedly connected to the adjusting base, the front supporting rod is in transmission connection with the front axle assembly and the rear axle assembly, and the driving assembly can drive the bottom end of the front supporting rod to move close to or away from the bottom end of the rear supporting rod, so as to drive the front axle assembly and the rear axle assembly to lift or lower the mower body.

12. The ride height adjustment device of claim 11, wherein, The driving assembly comprises a driving motor, a driven screw and a sliding rod, the driven screw is in transmission connection with the driving motor, the sliding rod is threadedly arranged on the driven screw, the side wall of the adjusting base is provided with a limiting groove matched with the sliding rod, and the two end portions of the sliding rod are rotatably connected with the bottom end of the front supporting rod through the limiting groove.

13. The ride height adjustment device of claim 12, wherein, The front supporting rod and the front axle assembly are connected through a first connecting rod, the front supporting rod and the rear axle assembly are connected through a second connecting rod, the middle portion of the front supporting rod is provided with a hinged rod, one end of the first connecting rod and one end of the second connecting rod are respectively hingedly connected with the hinged rod, the other end of the first connecting rod is hingedly connected with the front axle assembly, and the other end of the second connecting rod is hingedly connected with the rear axle assembly.

14. The ride height adjustment device of claim 13, wherein, The front axle assembly comprises a front axle and a front axle connecting piece, the front axle comprises first shaft bodies connected with front wheels at two ends and a second shaft body arranged between the first shaft bodies and used for supporting the mower body, the first shaft bodies and the second shaft body are arranged in a staggered manner, so that the front axle as a whole has a crankshaft shape, the front axle connecting piece is arranged on the second shaft body, the first connecting rod is hingedly connected with the front axle connecting piece, so that the first connecting rod can drive the front axle to rotate to lift or lower the mower body, and the rear axle assembly comprises a rear axle used for supporting the mower body and a rear axle connecting piece connected with rear wheels, the rear axle is arranged on the rear axle connecting piece, the second connecting rod is hingedly connected with the rear axle connecting piece, and the connecting points of the rear axle, the second connecting rod and the rear wheels on the rear axle connecting piece are arranged in a triangular manner, so that the second connecting rod can drive the rear axle connecting piece to rotate to lift or lower the mower body.

15. A lawnmower characterised in that, The chassis height adjusting device comprises the chassis height adjusting device according to any one of claims 1-14.

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