CN114667841B

CN114667841B - Height-adjusting mechanism and mowing device

Info

Publication number: CN114667841B
Application number: CN202011573195.0A
Authority: CN
Inventors: 丁聪; 王凤威; 周新华; 张永
Original assignee: Lexy Electric Green Energy Technology Suzhou Co Ltd; Suzhou Kingclean Precision Machinery Co Ltd
Current assignee: Lexy Electric Green Energy Technology Suzhou Co Ltd; Suzhou Kingclean Precision Machinery Co Ltd
Priority date: 2020-12-24
Filing date: 2020-12-24
Publication date: 2023-08-01
Anticipated expiration: 2040-12-24
Also published as: CN114667841A

Abstract

The invention relates to a height adjusting mechanism and a mowing device. The height-adjusting mechanism, can adjust the height of target part, include: a first operation panel; a second operation panel; the first operation plate moves to be connected with the adjusting wheel and drives the adjusting wheel to rotate along a first direction so as to raise the height of the target component; the second operation plate moves to be connected with the adjusting wheel and drives the adjusting wheel to rotate along a second direction to reduce the height of the target component, and the second direction is opposite to the first direction. The height-adjusting mechanism is simple in structure, manufacturing cost can be reduced to a certain extent, and the difficulty of subsequent maintenance and disassembly can be reduced.

Description

Height-adjusting mechanism and mowing device

Technical Field

The invention relates to the technical field of mowers, in particular to a height adjusting mechanism and a mowing device.

Background

With the continuous development of economy, the requirements of people on urban construction planning are also increasing. In urban construction planning, lawn greenbelts are usually planted in areas such as road edges or parks in order to beautify the environment and purify air. After the planting is finished, the plants are also required to be trimmed and cut regularly, so that the plants can keep a good growth state. In order to increase the cutting efficiency, a mowing device is generally used for cutting. The grass growing heights in different areas are generally inconsistent, so that a height adjusting mechanism is arranged on a general grass cutting device, and the height of the blade is adjusted through the height adjusting mechanism so as to be suitable for grass with different heights.

However, in the related art, the structure of the height adjusting mechanism in some mowing devices is complex, so that the manufacturing cost is high, and the subsequent maintenance and disassembly are also troublesome.

Disclosure of Invention

Based on the above, the invention provides a height adjusting mechanism which has a simpler structure, can reduce the manufacturing cost to a certain extent, and can reduce the difficulty of subsequent maintenance and disassembly.

The height-adjusting mechanism, can adjust the height of target part, include:

a first operation panel;

a second operation panel;

the first operation plate moves to be connected with the adjusting wheel and drives the adjusting wheel to rotate along a first direction so as to raise the height of the target component; the second operation plate moves to be connected with the adjusting wheel and drives the adjusting wheel to rotate along a second direction to reduce the height of the target component, and the second direction is opposite to the first direction.

In one embodiment, the height adjusting mechanism further comprises an operation panel reset piece, wherein the operation panel reset piece is connected with the first operation panel and the second operation panel, and the operation panel reset piece drives the first operation panel and/or the second operation panel to reset.

In one embodiment, the adjusting wheel comprises a first tooth socket, the first operation plate comprises a first poking piece, and the first operation plate moves to enable the first poking piece to be clamped into the first tooth socket and poke the adjusting wheel to rotate; the adjusting wheel further comprises a second tooth socket, the second operating plate comprises a second stirring piece, and the second operating plate moves to enable the second stirring piece to be clamped into the second tooth socket and stir the adjusting wheel to rotate.

In one embodiment, the first operation panel further includes a first operation panel body and a first toggle member reset member, and the first toggle member is connected with the first operation panel body through the first toggle member reset member; the second operation panel further comprises a second operation panel main body and a second stirring piece reset piece, and the second stirring piece is connected with the second operation panel main body through the second stirring piece reset piece.

In one embodiment, at least one side of the first tooth slot is provided with a first adjusting tooth, the first adjusting tooth comprises a first inclined plane, the first stirring piece comprises a first abutting surface, and when the first stirring piece stirs the adjusting wheel to rotate, the first abutting surface is jointed with the first inclined plane; at least one side of the second tooth groove is provided with a second adjusting tooth, the second adjusting tooth comprises a second inclined plane, the second stirring piece comprises a second propping surface, and when the second stirring piece stirs the adjusting wheel to rotate, the second propping surface is attached to the second inclined plane.

In one embodiment, the position of the target member is locked when the first or second operation plate is separated from the adjustment wheel.

In one embodiment, the height adjusting mechanism further comprises a boss, a self-locking member and a connecting member, wherein the connecting member is connected with the target member, the self-locking member locks the connecting member on the boss, and when the adjusting wheel rotates, the self-locking member can release the locking of the connecting member.

In one embodiment, the self-locking member is a torsion spring, the torsion spring is sleeved on the boss and abuts against the boss, when the adjusting wheel rotates, the torsion spring deforms, so that a gap exists between the torsion spring and the boss, and the torsion spring can rotate along with the adjusting wheel.

In one embodiment, the torsion spring includes a first bending end and a second bending end, an accommodating space is defined between the first bending end and the second bending end, the connecting piece stretches into the accommodating space, when the adjusting wheel rotates, the adjusting wheel is propped against the outer side of the first bending end or the outer side of the second bending end, and the inner side of the first bending end or the inner side of the second bending end is propped against the connecting piece. Preferably, the adjusting wheel comprises an opening and a pushing plate, one pushing plate is respectively arranged on two sides of the opening, the first bending end and the second bending end extend out from the opening, and when the adjusting wheel rotates, the pushing plate is propped against the first bending end or the second bending end.

The height adjusting mechanism is provided with a first operation plate, a second operation plate and an adjusting wheel, the adjusting wheel is connected with the target component, and the first operation plate and the second operation plate can be stepped on by an operator. When the first operation plate is stepped, the first operation plate moves to be connected with the adjusting wheel, and the first operation plate continuously steps on the first operation plate, the first operation plate drives the adjusting wheel to rotate along a first direction and drives the target part to move to rise; when the second operation plate is stepped on, the second operation plate moves to be connected with the adjusting wheel, and the second operation plate continuously steps on the second operation plate, the second operation plate drives the adjusting wheel to rotate along the second direction and drives the target component to move so as to reduce the height. In the above-mentioned structure, set up two operation panels, make target part rise respectively through two operation panels and reduce, turn up and turn down between relatively independent, compare with the conventional structures such as realizing turning up and turning down simultaneously through an operation panel, can make the connection structure between each part simpler, can reduce manufacturing cost to a certain extent, and because the structure is simpler, the degree of difficulty is lower when follow-up maintenance is dismantled.

The invention provides a mowing device, wherein the height adjusting mechanism is simpler in structure, the manufacturing cost of the mowing device can be reduced to a certain extent, and the difficulty of subsequent maintenance and disassembly can be reduced.

The mowing device comprises the heightening mechanism, and the target component is a blade.

According to the mowing device, the first operation plate, the second operation plate and the adjusting wheel are arranged in the heightening mechanism, the adjusting wheel is connected with the blade, and the first operation plate and the second operation plate can be stepped on by an operator. When the first operation plate is stepped, the first operation plate moves to be connected with the adjusting wheel, and the first operation plate continuously steps on the first operation plate, the first operation plate drives the adjusting wheel to rotate along a first direction and drives the blade to move to rise; when the second operation plate is stepped on, the second operation plate moves to be connected with the adjusting wheel, and the second operation plate drives the adjusting wheel to rotate along the second direction when the second operation plate is continuously stepped on, and drives the blade to move so as to reduce the height. In the structure, two operation plates are arranged, the blade is respectively lifted and lowered through the two operation plates, the blade is relatively independent between the height adjustment and the lowering adjustment, and compared with the conventional structure that the height adjustment and the lowering adjustment are simultaneously realized through one operation plate, the connecting structure between all the parts is simpler, the manufacturing cost of the mowing device can be reduced to a certain extent, and the difficulty is lower during subsequent maintenance and disassembly due to the simpler structure.

Drawings

FIG. 1 is a schematic view of a mowing apparatus according to an embodiment of the present invention;

FIG. 2 is a schematic view of a portion of the mowing apparatus in FIG. 1;

FIG. 3 is a schematic view of a portion of the grass cutting device of FIG. 1 from another perspective;

FIG. 4 is a schematic view of a height adjustment mechanism of the mowing apparatus in FIG. 1;

FIG. 5 is an exploded view of the height adjustment mechanism of the mower of FIG. 4;

FIG. 6 is a schematic view of a portion of the height adjustment mechanism of FIG. 5;

FIG. 7 is a schematic view of a portion of the height adjustment mechanism of FIG. 5 from another perspective;

FIG. 8 is a cross-sectional view of the height adjustment mechanism of FIG. 5;

fig. 9 is a schematic view of a part of the height adjusting mechanism in fig. 5.

Reference numerals:

the first operating plate 100, the first operating plate main body 110, the first fixed shaft 111, the first finger 120, the first abutting surface 121, and the first finger elastic member 130;

the second operating plate 200, the second operating plate main body 210, the second fixing shaft 211, the second finger 220, the second abutting surface 221 and the second finger elastic member 230;

the adjusting wheel 300, the first adjusting part 310, the first adjusting teeth 311, the first inclined surface 3111, the first tooth socket 312, the second adjusting part 320, the second adjusting teeth 321, the second inclined surface 3211, the second tooth socket 322, the convex ring 330, the first pushing plate 331, the second pushing plate 332, and the opening 333;

The adjusting wheel comprises an adjusting wheel housing 400, a first notch 410, a second notch 420, a third notch 430 and a pointer 440;

the operation plate connector 510, the operation plate connector body 511, the first stopper plate 5111, the second stopper plate 5112, the boss 512, the first shaft 513, the second shaft 514, the first elastic member 520;

the self-locking member 610, the first bending end 611, the second bending end 612, the winding portion 613, the accommodating space 614, the connecting member 620, the connecting member main body 621, and the protruding portion 622;

the transmission assembly 700, the third shaft 710, the rotating member 720, the graduations 721, the cam 730, the first link 740;

a body 800, a blade 810, a fourth shaft 820, a baffle 830;

a second elastic member 910, a second link 920, a third link 930, a fourth link 940, and a fifth link 950;

the collection box 1010, the frame 1020 and the travelling wheels 1030.

Detailed Description

In order that the above objects, features and advantages of the invention will be readily understood, a more particular description of the invention will be rendered by reference to the appended drawings. In the following description, numerous specific details are set forth in order to provide a thorough understanding of the present invention. The present invention may be embodied in many other forms than described herein and similarly modified by those skilled in the art without departing from the spirit of the invention, whereby the invention is not limited to the specific embodiments disclosed below.

In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. indicate orientations or positional relationships based on the orientations or positional relationships shown in the drawings are merely for convenience in describing the present invention and simplifying the description, and do not indicate or imply that the device or element being referred to must have a specific orientation, be configured and operated in a specific orientation, and therefore should not be construed as limiting the present invention.

Furthermore, the terms "first," "second," and the like, are used for descriptive purposes only and are not to be construed as indicating or implying a relative importance or implicitly indicating the number of technical features indicated. Thus, a feature defining "a first" or "a second" may explicitly or implicitly include at least one such feature. In the description of the present invention, the meaning of "plurality" means at least two, for example, two, three, etc., unless specifically defined otherwise.

In the present invention, unless explicitly specified and limited otherwise, the terms "mounted," "connected," "secured," and the like are to be construed broadly, and may be, for example, fixedly connected, detachably connected, or integrally formed; can be mechanically or electrically connected; either directly or indirectly, through intermediaries, or both, may be in communication with each other or in interaction with each other, unless expressly defined otherwise. The specific meaning of the above terms in the present invention can be understood by those of ordinary skill in the art according to the specific circumstances.

In the present invention, unless expressly stated or limited otherwise, a first feature "up" or "down" a second feature may be the first and second features in direct contact, or the first and second features in indirect contact via an intervening medium. Moreover, a first feature being "above," "over" and "on" a second feature may be a first feature being directly above or obliquely above the second feature, or simply indicating that the first feature is level higher than the second feature. The first feature being "under", "below" and "beneath" the second feature may be the first feature being directly under or obliquely below the second feature, or simply indicating that the first feature is less level than the second feature.

It will be understood that when an element is referred to as being "fixed" or "disposed" on another element, it can be directly on the other element or intervening elements may also be present. When an element is referred to as being "connected" to another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "upper," "lower," "left," "right," and the like are used herein for illustrative purposes only and are not meant to be the only embodiment.

Referring to fig. 1 to 3, a schematic structural view of a mowing device according to an embodiment of the present invention (parts are omitted), a schematic structural view of a mowing device in fig. 1, and a schematic view of a mowing device in fig. 1 from another perspective are shown. The mowing device according to an embodiment of the invention includes a frame 1020, a machine body 800, and the like, and the machine body 800 is connected with the frame 1020. The grass cutting device can cut and trim greens and the like of lawns.

Four corners of the frame 1020 are each connected with a road wheel 1030, and the mowing device moves through the road wheels 1030. Preferably, the travelling wheels 1030 are universal wheels, so that the flexibility of the mowing device in travelling is improved, and the mowing device is easier to turn. A push rod (not shown) is also connected to the frame 1020, and an operator pushes the push rod to move the mowing device to a position to be cut.

The bottom of the body 800 is provided with two blades 810. The motor inside the machine body 800 can drive the blade 810 to rotate, and when the mowing device moves, the blade 810 in a rotating state can cut and trim lawns. Specifically, the motor may drive the blade 810 to rotate via a belt drive, gear drive, or the like. The number of blades 810 may also be one, or more than two.

Preferably, a collection box 1010 is connected to the rear of the frame 1020, and grass cut by the blade 810 enters the collection box 1010 to be collected due to the influence of air flow generated by the rotation of the blade 810. After cutting is completed, the collected grass is poured out. Therefore, the cutting and collecting can be completed simultaneously, and the efficiency is high. In one embodiment of the present invention, collection bin 1010 is preferably provided with a suction fan or the like that is capable of drawing cut grass into collection bin 1010 for temporary storage as blade 810 cuts.

Preferably, the collection box 1010 is detachably connected to the frame 1020, for example, the collection box 1010 and the frame 1020 can be fixed by clamping. Thus, the collection boxes 1010 can be removed to be dumped, so that dumping is more thorough, and in the mowing process, if one collection box 1010 is full, the collection box 1010 can be conveniently removed and replaced by another empty collection box 1010.

The operator pushes the mower forward behind the collection bin 1010. When the blade 810 rotates, some stones may collide with the ground, and the stones may fly backward to injure operators accidentally. Therefore, a baffle 830 is preferably disposed below the tail of the machine body 800, and the baffle 830 can block the stones so as not to injure operators accidentally.

In general, the grass growth heights in different areas are different, so when cutting grass of different heights, the height of the blade 810 needs to be adjusted by a height adjusting mechanism to better adapt to the grass height.

Specifically, the height adjustment of the blade 810 is achieved by adjusting the height of the body 800. The frame 1020 is fixedly connected with an operation panel connector 510, and the first operation panel 100 and the second operation panel 200 are connected with the operation panel connector 510. When the operator steps on the first operation panel 100 to the first position, the operator can connect or abut with the machine body 800, and when the operator continues to move, the height of the machine body 800 can be increased, so that the height of the blade 810 is increased; when the second operation plate 200 is stepped on to the second position, it can be connected to or abutted against the body 800, and when the movement is continued, the height of the body 800 can be reduced, and the height of the blade 810 can be reduced.

Referring to fig. 4 to 9, there are respectively shown a schematic structural view of the height adjusting mechanism of the mowing device in fig. 1, an exploded view of the height adjusting mechanism of the mowing device in fig. 5, a schematic structural view of a part of the height adjusting mechanism in fig. 5, a schematic view of another view of a part of the structure of the height adjusting mechanism in fig. 5, a sectional view of the height adjusting mechanism in fig. 5, and a schematic structural view of a part of the height adjusting mechanism in fig. 5. Further, the first operation plate 100 and the second operation plate 200 drive the machine body 800 to move through the adjusting wheel 300. When the first operation plate 100 moves to the first position, the first operation plate 100 can be connected or abutted with the adjusting wheel 300, and when the first operation plate 100 continues to move, the adjusting wheel 300 is driven to rotate along the first direction; when the second operation plate 200 moves to the second position, the second operation plate 200 can be connected or abutted with the adjusting wheel 300, and when the second operation plate 200 continues to move, the adjusting wheel 300 is driven to rotate along the second direction. The second direction is located opposite to the first direction.

When the operator steps on the first operation panel 100 or the second operation panel 200, the movement modes of the two may be movement or rotation. When the first or second operation panel 100 or 200 is stepped, the body 800 moves synchronously to change its height. The movement of the body 800 may be a movement or may be a rotation.

For example, in some embodiments, the first and second operation plates 100 and 200 are rotated to achieve movement of the body 800. At this time, a worm gear assembly may be provided, and the first and second operation plates 100 and 200 rotate to drive the turbine to rotate. Alternatively, in some embodiments, a screw assembly may be provided, and the screw is rotated by rotating the first and second operation plates 100 and 200, and a nut on the screw is connected to the body 800. Of course, other similar structures besides the above-mentioned manner are also possible, and will not be described herein.

In some embodiments, the first and second operation panels 100 and 200 can be rotated by stepping to realize the rotation of the body 800.

Specifically, the first operation board 100 and the second operation board 200 are respectively located at two sides of the adjustment wheel 300, and the first operation board 100, the second operation board 200, and the adjustment wheel 300 are rotationally connected to the operation board connector 510. The operation plate connector 510 includes an operation plate connector body 511, a boss 512, a first shaft 513, and a second shaft 514. The operation panel connector body 511 is fixedly connected to the frame 1020. The operation plate connector body 511 is provided with a first shaft 513 and a second shaft 514. The first operation panel 100 is sleeved on the first shaft 513, and the first operation panel 100 can rotate around the first shaft 513. The second operation plate 200 is sleeved on the second shaft 514, and the second operation plate 200 can rotate around the second shaft 514. The boss 512 protrudes from the operation panel connecting body 511 and is hollow, and the third shaft 710 passes through the boss 512 and is fixedly connected with the operation panel connecting member body 511. The adjusting wheel 300 is sleeved on the boss 512 and can rotate relative to the boss 512.

The adjusting wheel 300 is provided with a first adjusting part 310 and a second adjusting part 320, when the first operating board 100 rotates to the first position, the first operating board 100 can be connected with the first adjusting part 310, and when the first operating board 100 continues to rotate, the adjusting wheel 300 is driven to rotate along the first direction; when the second operation plate 200 rotates to the second position, the second operation plate 200 can be connected to the second adjusting portion 320, and when the second operation plate 200 continues to rotate, the adjusting wheel 300 is driven to rotate along the second direction.

Specifically, in the adjustment wheel 300, the first adjustment portion 310 includes a plurality of first adjustment teeth 311, and first tooth slots 312 are formed between adjacent first adjustment teeth 311. It should be noted that a first tooth slot 312 is formed between the first adjusting tooth 311 located at the most edge and the root circle. When the first operation plate 100 is rotated to the first position, it can be engaged with the first tooth slot 312.

Similarly, the second adjusting part 320 includes a plurality of second adjusting teeth 321, second tooth grooves 322 are formed between adjacent second adjusting teeth 321, and second tooth grooves 322 are formed between the second adjusting teeth 321 positioned at the extreme edge and the root circle. When the second operation plate 200 is rotated to the second position, it can be engaged into the second tooth slot 322.

The first operation panel 100 includes a first operation panel body 110 and a first toggle member, the first operation panel body 110 is connected to the first toggle member, and the first toggle member is located at a side close to the adjustment wheel 300.

Similarly, the second operation panel 200 includes a second operation panel body 210 and a second toggle member, and the second operation panel body 210 is connected to the second toggle member, and the second toggle member is located at a side close to the adjustment wheel 300.

Preferably, the first toggle member is a first toggle pawl 120, and the second toggle member is a second toggle pawl 220.

When the first operation plate 100 is not stepped on, the first finger 120 is not in contact with the first tooth groove 312, and similarly, when the second operation plate 200 is not stepped on, the second finger 220 is not in contact with the second tooth groove 322. This makes only one of the operating plates contact the regulating wheel 300 and drives the regulating wheel 300 to rotate when stepping on the other operating plate, and since the other operating plate does not contact the regulating wheel 300, the rotation of the regulating wheel 300 does not affect the other operating plate which is not in contact with the other operating plate, so that the operation of the height adjusting mechanism is safer and more reliable.

Specifically, when the first operation panel 100 is not stepped on, the first finger 120 is located below the first slot 312. The pedal position on the first operating panel 100 is at the top, the first finger 120 is at the bottom, and the first shaft 513 is at the middle. The first operation panel body 110 is sleeved on the first shaft 513 and can pivot around the first shaft 513. Thus, when the mower is placed on the ground, the first operation plate 100 is stepped on, and the first operation plate 100 is rotated in the second direction around the first shaft 513 as a whole, the portion of the first operation plate 100 located above the first shaft 513 is rotated downward, i.e., toward the ground, and the portion of the first operation plate 100 located below the first shaft 513 is rotated upward, i.e., toward a direction away from the ground. The first finger 120 rotates upward, passes through a first notch 410 in the adjustment wheel housing 400 that covers the exterior of the adjustment wheel 300, and gradually approaches the first tooth slot 312 until it snaps into the first tooth slot 312. At this time, the first operation board 100 is connected to the adjustment wheel 300, and when the first operation board 100 is continuously stepped on, the first finger 120 will drive the adjustment wheel 300 to rotate along the first direction.

When the second operation panel 200 is not stepped on, the second finger 220 is located below the second tooth slot 322. The pedal position on the second operating plate 200 is at the top, the second finger 220 is at the bottom, and the second shaft 514 is at the middle. The second operation plate body 210 is sleeved on the second shaft 514 and can pivot around the second shaft 514. Therefore, when the mower is placed on the ground, the second operation plate 200 is stepped on, and the second operation plate 200 is rotated in the first direction around the second shaft 514 as a whole, the portion of the second operation plate 200 located above the second shaft 514 is rotated downward, i.e., toward the ground, and the portion of the second operation plate 200 located below the second shaft 514 is rotated upward, i.e., toward a direction away from the ground. That is, the second finger 220 is rotated upward, passes through the second notch 420 of the regulating wheel housing 400 covered on the outside of the regulating wheel 300, and gradually approaches the second tooth groove 322 until being caught in the second tooth groove 322. At this time, the second operation plate 200 is connected to the adjustment wheel 300, and when the second operation plate 200 is continuously stepped on, the second finger 220 will drive the adjustment wheel 300 to rotate along the second direction.

Preferably, the top surfaces of the first operation plate 100 and the second operation plate 200 are provided with anti-slip patterns to increase friction force during pedaling, and the first operation plate and the second operation plate are not easy to slip during pedaling.

Preferably, the first operation panel 100 and the second operation panel 200 are connected by an operation panel reset member. Further, the operation panel restoring member is a first elastic member 520 connected to both the first operation panel 100 and the second operation panel 200. The first elastic member 520 is in a stretched state such that the first operation panel 100 has a tendency to rotate in a first direction, and the second operation panel 200 has a tendency to rotate in a second direction. When the first operation plate 100 is stepped, the first elastic member 520 is further stretched. When the first operation plate 100 is released, the first operation plate 100 is rotated in the first direction to be restored by the resilience of the first elastic member 520. When the second operation plate 200 is stepped, the first elastic member 520 is further stretched. When the second operation plate 200 is released, the second operation plate 200 is rotated to be restored in the second direction by the resilience of the first resilient member 520. Thus, the first operation panel 100 and the second operation panel 200 can be automatically reset without performing other operations.

In addition, a first stopper plate 5111 and a second stopper plate 5112 are further provided on the operation plate connector body 511. When the first operation plate 100 is released, the first operation plate 100 is rotated in the first direction, it is blocked by the first blocking plate 5111. When the second operation plate 200 is released, the second operation plate 200 is rotated in the second direction, it is blocked by the second blocking plate 5112. Preferably, the first and second stopper plates 5111 and 5112 are made of a material having a certain elasticity, such as silica gel or rubber. In this way, the impact force to the first operation panel 100 and the second operation panel 200 can be reduced, and the first operation panel and the second operation panel are not easily damaged.

Preferably, the first finger 120 is rotatably connected to the first operation panel main body 110. The rotational connection is preferably such that the first finger 120 pivots about at least a portion of the first lever body 110. Still further, the at least one portion refers to, for example, the first fixed shaft 111 fixedly provided to the first operation panel body 110. Specifically, the first finger 120 is sleeved on the first fixed shaft 111, and the first finger 120 can pivot around the first fixed shaft 111. Further, the first operation panel main body 110 is provided with a first movable space for the first finger 120 to pivot. When the first operation panel 100 is stepped on, the first operation panel body 110 rotates in the second direction until the wall of the movable space contacts the first pawl 120, and when the first operation panel body 110 continues to rotate in the second direction, the wall of the movable space abuts against the first pawl 120 and pushes the first pawl 120 to rotate in the second direction until the first pawl 120 is pushed to be clamped into the first tooth slot 312. After the first pusher dog 120 is clamped into the first tooth slot 312, the first pusher dog 120 abuts against the wall of the first tooth slot 312 and pushes the adjusting wheel 300 where the first tooth slot 312 is located to rotate along the first direction, and meanwhile, the first tooth slot 312 gives the first pusher dog 120 a reaction force, so that the first pusher dog 120 can rotate around the first fixed shaft 111 relative to the first operation panel main body 110, the first pusher dog 120 is better attached to the first adjusting tooth 311, is clamped in the first tooth slot 312 more stably, is not easy to break away from the first tooth slot 312, and drives the adjusting wheel 300 to rotate more stably. Similarly, second finger 220 is rotatably coupled to second lever body 210. The rotational connection is preferably such that the second finger 220 pivots about at least a portion of the second lever body 210. The at least one portion is, for example, a second fixing shaft 211 fixedly provided to the second operation panel body 210. Specifically, the second finger 220 is sleeved on the second fixing shaft 211, and the second finger 220 can pivot around the second fixing shaft 211. Further, a second movable space for the second finger 220 to pivot is provided on the second operation panel body 210. When the second operation panel 200 is stepped on, the second operation panel body 210 rotates in the first direction until the wall of the second movable space contacts the second pawl 220, and when the second operation panel body 210 continues to rotate in the first direction, the wall of the second movable space abuts against the second pawl 220 and rotates the second pawl 220 in the first direction until the second pawl 120 is engaged with the second tooth slot 322. Thus, after the second pusher dog 220 is clamped into the second tooth slot 322, the second pusher dog 220 abuts against the wall of the second tooth slot 322 and pushes the adjusting wheel 300 where the second tooth slot 322 is located to rotate along the second direction, and meanwhile, the second tooth slot 322 gives the second pusher dog 220 a reaction force, so that the second pusher dog 220 can rotate relative to the second fixing shaft 211 of the second operation panel main body 210, the second pusher dog 220 is better attached to the second adjusting tooth 321, is more stably clamped in the second tooth slot 322 and is not easy to separate from the second tooth slot 322, and the adjusting wheel 300 is driven to rotate more stably.

Preferably, the first adjusting teeth 311 are helical teeth inclined with respect to the root circle. When the first finger 120 is engaged into the first tooth slot 312 and then continues to tread the first operation panel 100, the first finger 120 pivots relative to the first operation panel body 110 under the reaction force of the groove wall of the first tooth slot 312 to the first finger 120, so that the first abutment surface 121 on the first finger 120 is attached to the first inclined surface 3111 on the first adjustment tooth 311 (i.e. the groove wall surface of the first tooth slot 312). In this way, the first finger 120 can be more stably clamped in the first tooth slot 312, and is not easy to disengage from the first tooth slot 312, so as to more stably drive the adjusting wheel 300 to rotate.

Similarly, the second adjustment tooth 321 is a helical tooth that is inclined relative to the root circle. When the second finger 220 is engaged into the second tooth slot 322 and the second operation panel 200 is continuously stepped on, the second finger 220 pivots relative to the second operation panel body 210 under the reaction force of the groove wall of the second tooth slot 322 to the second finger 220, so that the second supporting surface 221 of the second finger 220 is attached to the second inclined surface 3211 of the second adjusting tooth 321 (i.e. the groove wall surface of the second tooth slot 322). In this way, the second finger 220 can be more stably clamped in the second tooth slot 322, and is not easy to disengage from the second tooth slot 322, so that the adjusting wheel 300 is more stably driven to rotate.

Preferably, the first operation panel main body 110 is further provided with a first toggle member reset member of the first toggle 120. The first shifting member resetting member not only can be used for enabling the first shifting claw 120 to be more attached to the adjusting wheel 300 so as to better shift the adjusting wheel 300 to rotate, but also can enable the first shifting claw 120 to reset after the first shifting claw 120 is separated from the first tooth slot 312, so that interference of the first shifting claw 120 on rotation of the adjusting wheel 300 is avoided. For example, the first toggle member is an elastic member. For example, the elastic member is a first finger elastic member 130 connected between the first finger 120 and the first operation panel main body 110. Specifically, one end of the first finger elastic member 130 is connected to the bottom of the first operation panel body 110, and the other end is connected to a portion of the first finger 120 exposed from the first operation panel body 110. After the first finger 120 is clamped into the first tooth slot 312, under the resilience force of the first finger elastic member 130, the first finger 120 can elastically support against the first tooth slot 312, so that the first finger 120 is tightly attached to the first tooth slot 312, and is not easy to separate from the first tooth slot 312, thereby driving the adjusting wheel 300 to rotate more stably. In addition, the first finger 120 can generate certain elastic retraction when contacting with the first tooth groove 312, so that the first tooth groove 312 is prevented from being damaged due to rigid contact. When the stepped first operation panel 100 is released, the first operation panel 100 is pulled by the first elastic member 520 to rotate and reset along the first direction, the rotation makes the first fixed shaft 111 in the first operation panel main body 110 far away from the adjusting wheel 300, the first fixed shaft 111 drives the first pawl 120 far away from the first tooth slot 312 of the adjusting wheel 300, when the first pawl 120 is separated from the first tooth slot 312, the resilience force of the first pawl elastic member 130 pulls the first pawl 120 to rotate along the first direction around the first fixed shaft 111, and the needle tip of the first pawl 120 faces the ground after the rotation, so that the whole first pawl 120 is far away from the first tooth slot 312, and further, the interference of the first pawl 120 on the rotation of the adjusting wheel 300 is avoided.

Similarly, the second operation panel body 210 is further provided with a second toggle member reset member of the second toggle 220. The second shifting member resetting member not only can be used for enabling the second shifting claw 220 to be more attached to the adjusting wheel 300 so as to better shift the adjusting wheel 300 to rotate, but also can be used for resetting the second shifting claw 220 after the second shifting claw 220 is separated from the second tooth slot 322, so that the second shifting claw 220 is prevented from interfering with the rotation of the adjusting wheel 300. For example, the second toggle member is an elastic member. For example, the elastic member is a second finger elastic member 230 connected between the second finger 220 and the second operation panel main body 210. Specifically, one end of the second finger elastic member 230 is connected to the bottom of the second operation panel body 210, and the other end is connected to a portion of the second finger 220 exposed from the second operation panel body 210. The second operation panel main body 210 is connected with the second pusher dog 220 through the second pusher dog elastic element 230, so, after the second pusher dog 220 is clamped into the second tooth slot 322, the second pusher dog 220 can be elastically propped in the second tooth slot 322 under the resilience force of the second pusher dog elastic element 230, the second pusher dog 220 is tightly attached to the second tooth slot 322, and is not easy to break away from the second tooth slot 322, so that the adjusting wheel 300 is driven to rotate more stably. In addition, the second finger 220 can generate certain elastic retraction when contacting with the second tooth groove 322, thereby avoiding damaging the second tooth groove 322 due to rigid contact. When the stepped second operation panel 200 is released, the second operation panel 200 is pulled by the first elastic member 520 to rotate and reset along the second direction, the rotation makes the second fixing shaft 211 in the second operation panel main body 210 far away from the adjusting wheel 300, the second fixing shaft 211 drives the second pusher dog 220 to be far away from the second tooth slot 322 of the adjusting wheel 300, when the second pusher dog 220 is separated from the second tooth slot 322, the resilience force of the second pusher dog elastic member 230 pulls the second pusher dog 220 to rotate along the second direction around the second fixing shaft 211, and the needle tip of the second pusher dog 120 faces the ground after the rotation, so that the whole second pusher dog 220 is far away from the second tooth slot 322, and further, the interference of the second pusher dog 220 on the rotation of the adjusting wheel 300 is avoided.

It should be noted that in other embodiments of the present invention, toothed members may be used in place of first finger 120 and/or second finger 220. Specifically, the first fixed shaft 111 of the first operation panel body 110 is sleeved with a first toothed member, and the second fixed shaft 211 of the second operation panel body 210 is sleeved with a second toothed member. When the first or second operation panel 100 or 200 is stepped on, the first and/or second toothed members are engaged with the adjustment wheel 300, thereby rotating the adjustment wheel 300.

As described above, the first and second operation panels 100 and 200 can be rotated by stepping to rotate the body 800. When the first and second operation plates 100 and 200 rotate and drive the regulating wheel 300 to rotate, power is transmitted to the body 800 through the transmission assembly 700.

Further, the transmission assembly 700 can convert the rotation of the regulating wheel 300 about the horizontal axis into the up-down rotation of the body 800.

Specifically, in some embodiments, the transmission assembly 700 includes a rotating member 720, a cam 730, and a first link 740. The adjusting wheel 300 is connected with the rotating member 720, the rotating member 720 is sleeved on the third shaft 710, and when the adjusting wheel 300 rotates, the rotating member 720 can be driven to rotate around the third shaft 710. The cam 730 is fixedly connected with the rotating member 720, the top end of the first connecting rod 740 is rotatably connected with the cam 730, and the bottom end is rotatably connected with the machine body 800. Therefore, when the adjusting wheel 300 rotates, the adjusting wheel 300 drives the rotating member 720 to rotate, the rotating member 720 rotates to drive the cam 730 to rotate around the third shaft 730, the bottom end of the cam 730 drives the first connecting rod 740 to swing up and down, and the first connecting rod 740 drives the machine body 800 to rotate relative to the frame 1020, so as to realize the height adjustment of the machine body 800.

Preferably, the height adjusting mechanism is further provided with an adjusting indication structure. The adjustment indicating structure is used for indicating the height gear of the machine body 800. Further, the adjustment indicating structure is disposed on the rotating member 720. Still further, the adjustment indicating structure includes a scale 721 provided on the rotating member 720. The regulating wheel 300 is provided with a regulating wheel housing 400 in a housing, and one side of the regulating wheel housing 400 extends to an end surrounding the rotating member 720. The adjusting wheel housing 400 is provided with a third notch 430, and one side of the third notch 430 is provided with a pointer 440. The scale 721 is exposed from the third notch 430. When the first or second operation panel 100 or 200 is stepped on to adjust the height of the body 800, a plurality of adjustment gears may be provided, each corresponding to a different height. When the rotary member 720 is rotated to a certain gear position of the pointer 440 aligned with the scale 721, it is indicated that the height corresponding to the gear position has been adjusted. Through the structure, the height adjusting device can be used for adjusting the height more conveniently and rapidly, and the current height gear can be known rapidly. In addition, the positions of the pointer 440 and the scale 721 described above may be interchanged.

Preferably, the first adjusting teeth 311 and the second adjusting teeth 321 are staggered along the axial direction of the adjusting wheel 300. Thus, the number of the first adjusting teeth 311 and the second adjusting teeth 321 can be increased, so that the number of gear positions during gear position adjustment is increased, and the height adjustment range is enlarged.

Preferably, the rotating member 720 and the first connecting rod 740 are provided with reinforcing ribs to increase the strength thereof, so that the rotating member 720 and the first connecting rod are not easy to break during movement.

Preferably, a parallelogram mechanism is also provided between the frame 1020 and the body 800 to improve the stability of the body 800 when rotating relative to the frame 1020. Specifically, referring to fig. 2 and 3, four corners of the machine body 800 are rotatably connected to the frame 1020 through a second link 920, a third link 930, a fourth link 940, and a fifth link 950, respectively.

The body 800 is further provided with a fourth shaft 820. Preferably, the fourth shaft 820 and the third shaft 710 are connected by the second elastic member 910. The second elastic member 910 may suspend the machine body 800 from the frame 1020 together with the first, second, third, fourth, and fifth links 740, 920, 930, 940, and 950 described above, so as to share a part of the weight of the machine body 800. In addition, when the body 800 rotates relative to the frame 1020, the second elastic member 910 also plays a role in buffering, so that the rotation of the body 800 is smoother.

Preferably, in some embodiments, the body 800 can be locked in the current position when the height adjustment is completed, i.e., self-locking can be achieved after the adjustment is completed.

As described above, when the first operation panel 100 or the second operation panel 200 is rotated to be connected to the adjustment wheel 300, the height adjustment can be performed, and when the first operation panel 100 or the second operation panel 200 is rotated and reset to be separated from the adjustment wheel 300, the height adjustment is completed. Therefore, when the first or second operation panel 100 or 200 is reversely rotated to be separated from the regulating wheel 300, the regulating wheel 300 is not reversely rotated to be reset, so that the body 800 is self-locked and is stabilized at the current position.

Specifically, a self-locking member 610 and a connecting member 620 are disposed between the adjusting wheel 300 and the transmission assembly 700. The connecting piece 620 is connected with the rotating piece 720, the self-locking piece 610 is sleeved on the boss 512, and the self-locking piece 610 can be in contact with the adjusting wheel 300, when the adjusting wheel 300 rotates, the self-locking piece 610 can rotate along with the adjusting wheel 300, so that the connecting piece 620 is driven to rotate. When the first or second operation plate 100 or 200 is separated from the regulating wheel 300, the regulating wheel 300 stops rotating, the boss 512 blocks the rotation of the self-locking member 610, so that the connection member 620 cannot rotate, and the position of the blade 810 is locked.

Further, the self-locking member 610 is a torsion spring, and the torsion spring is sleeved on the boss 512. When the adjusting wheel 300 rotates, the adjusting wheel 300 abuts against the torsion spring, so that the adjusting wheel is elastically deformed, the inner diameter of the torsion spring is increased, a gap exists between the torsion spring and the boss 512, and the rotation of the torsion spring is not limited by the boss 512. When the first or second operation plate 100 or 200 is separated from the regulating wheel 300, the regulating wheel 300 stops rotating, the torsion spring rebounds, its inner diameter decreases, and abuts against the boss 512, and the friction force therebetween will hinder the rotation of the torsion spring. That is, when the first operation plate 100 or the second operation plate 200 is not stepped on, the torsion spring cannot rotate, and accordingly, the connection member 620 and the rotation member 720 cannot rotate, and at this time, the height of the body 800 is locked.

Further, the torsion spring includes a first bending end 611, a second bending end 612 and a winding portion 613. The first bending end 611 and the second bending end 612 are respectively connected to two ends of the winding portion 613, and the winding portion 613 is sleeved on the boss 512. The first bending end 611 and the second bending end 612 define an accommodating space 614 therebetween. The connection member 620 includes a connection member main body 621 and an extension portion 622, the connection member main body 621 is fixedly connected with the rotation member 720, and the extension portion 622 extends into the accommodating space 614, so that a connection is formed between the connection member 620 and the self-locking member 610.

When the first operation board 100 drives the adjusting wheel 300 to rotate, the adjusting wheel 300 abuts against the outer side of the first bending end 611, and the inner side of the first bending end 611 abuts against the connecting piece 620. At this time, the torsion spring is elastically deformed by the pushing of the regulating wheel 300, the inner diameter of the winding portion 613 is increased, a gap exists between the winding portion 613 and the boss 512, and the rotation of the torsion spring is not limited.

Similarly, when the second operation plate 200 drives the adjusting wheel 300 to rotate, the adjusting wheel 300 abuts against the outer side of the second bending end 612, and the inner side of the second bending end 612 abuts against the connecting piece 620. At this time, the torsion spring is elastically deformed by the pushing of the regulating wheel 300, the inner diameter of the winding portion 613 is increased, a gap exists between the winding portion 613 and the boss 512, and the rotation of the torsion spring is not limited.

When the first operation plate 100 or the second operation plate 200 is separated from the adjusting wheel 300, the adjusting wheel 300 is not abutted against the outer side of the first bending end 611 or the second bending end 612, and the inner diameter of the winding portion 613 is reduced under the action of the resilience force and is abutted against the boss 512 without a gap therebetween.

Specifically, the adjusting wheel 300 further includes a collar 330 located at an end of the second adjusting portion 320, and a first pushing plate 331 and a second pushing plate 332 are disposed on the collar 330. An opening 333 is disposed at a position between the first pushing plate 331 and the second pushing plate 332 on the convex ring 330, and the first bending end 611 and the second bending end 612 extend from the opening 333. When the first operation plate 100 drives the adjusting wheel 300 to rotate, the first pushing plate 331 abuts against the outer side of the first bending end 611 and pushes the torsion spring to rotate. When the second operation plate 200 drives the adjusting wheel 300 to rotate, the second pushing plate 332 abuts against the outer side of the second bending end 612 and pushes the torsion spring to rotate.

Further, when the body 800 is lifted, the first operation panel 100 is released, if the body 800 is lifted to descend due to its own weight, the gravity of the body 800 gives the first link 740 a downward pulling force, and the first link 740 is under the action of the downward pulling force to drive the cam 730 to rotate, so as to drive the rotating member 720 fixedly connected with the cam 730 and the connecting member 620 fixedly connected with the rotating member 720 to rotate together, but the first bending end 611 blocks the rotation of the protruding portion 622 of the connecting member 620, and the friction between the torsion spring and the boss 512 also blocks the torsion spring from rotating relative to the boss 512, so that the rotation of the connecting member 620, the rotating member 720, the first link 740 and the body 800, that is, the bending end of the torsion spring and the friction between the torsion spring and the boss 512 together block the movement of the connecting member 620, the rotating member 720 and the cam 730, the first link 740 and the body 800, thereby realizing the unidirectional locking function.

In the above structure, the height locking of the machine body 800 is realized by utilizing the unidirectional locking characteristic of the torsion spring when external force is applied to the torsion spring from different directions, the structure is simpler, the cost of the torsion spring is lower, and the torsion spring is easy to obtain.

In addition, the height adjusting mechanism can be applied to other devices which need to adjust the height of a target component besides the mowing device.

The technical features of the above-described embodiments may be arbitrarily combined, and all possible combinations of the technical features in the above-described embodiments are not described for brevity of description, however, as long as there is no contradiction between the combinations of the technical features, they should be considered as the scope of the description.

The above examples illustrate only a few embodiments of the invention, which are described in detail and are not to be construed as limiting the scope of the invention. It should be noted that it will be apparent to those skilled in the art that several variations and modifications can be made without departing from the spirit of the invention, which are all within the scope of the invention. Accordingly, the scope of protection of the present invention is to be determined by the appended claims.

Claims

1. The height-adjusting mechanism can adjust the height of the target component, and is characterized by comprising:

a first operation panel;

a second operation panel;

the adjusting wheel is connected with the target component, the first operation plate and the second operation plate are respectively positioned at two sides of the adjusting wheel, and a first adjusting part and a second adjusting part are arranged on the adjusting wheel; when the first operation plate rotates to a first position, the first operation plate can be connected or abutted with the first adjusting part, and when the first operation plate continues to rotate, the adjusting wheel can be driven to rotate along a first direction so as to raise the height of the target component; when the second operation plate rotates to a second position, the second operation plate can be connected or abutted with the second adjusting part, and when the second operation plate continues to rotate, the adjusting wheel can be driven to rotate along a second direction so as to reduce the height of the target part, and the second direction is opposite to the first direction.

2. The height adjustment mechanism according to claim 1, further comprising an operation panel reset member connected to both the first operation panel and the second operation panel, the operation panel reset member driving the first operation panel and/or the second operation panel to be reset.

3. The height adjustment mechanism of claim 1, wherein the first adjustment portion comprises a first tooth slot, the first operating plate comprises a first toggle member, and the first operating plate moves to cause the first toggle member to snap into the first tooth slot and toggle the adjustment wheel to rotate; the second adjusting part comprises a second tooth socket, the second operating plate comprises a second stirring piece, and the second operating plate moves to enable the second stirring piece to be clamped into the second tooth socket and stir the adjusting wheel to rotate.

4. The height adjustment mechanism according to claim 3, wherein the first operation panel further comprises a first operation panel body and a first toggle member reset member, and the first toggle member is connected with the first operation panel body through the first toggle member reset member; the second operation panel further comprises a second operation panel main body and a second stirring piece reset piece, and the second stirring piece is connected with the second operation panel main body through the second stirring piece reset piece.

5. The height adjustment mechanism according to claim 3, wherein at least one side of the first tooth slot is provided with a first adjustment tooth, the first adjustment tooth comprises a first inclined surface, the first toggle member comprises a first abutment surface, and when the first toggle member toggles the adjustment wheel to rotate, the first abutment surface is in fit with the first inclined surface; at least one side of the second tooth groove is provided with a second adjusting tooth, the second adjusting tooth comprises a second inclined plane, the second stirring piece comprises a second propping surface, and when the second stirring piece stirs the adjusting wheel to rotate, the second propping surface is attached to the second inclined plane.

6. The elevating mechanism according to claim 1, wherein the position of the target member is locked when the first operation plate or the second operation plate is separated from the adjustment wheel.

7. The height adjustment mechanism according to claim 6, further comprising a boss, a self-locking member and a connecting member, the connecting member being connected to the target member, the self-locking member locking the connecting member to the boss, the self-locking member being capable of releasing the locking of the connecting member when the adjustment wheel rotates.

8. The height adjustment mechanism according to claim 7, wherein the self-locking member is a torsion spring, the torsion spring is sleeved on the boss and abuts against the boss, and when the adjustment wheel rotates, the torsion spring deforms to enable a gap to exist between the torsion spring and the boss, and the torsion spring can rotate along with the adjustment wheel.

9. The height adjustment mechanism according to claim 8, wherein the torsion spring comprises a first bending end and a second bending end, an accommodating space is defined between the first bending end and the second bending end, the connecting piece stretches into the accommodating space, when the adjustment wheel rotates, the adjustment wheel abuts against the outer side of the first bending end or the outer side of the second bending end, and the inner side of the first bending end or the inner side of the second bending end abuts against the connecting piece.

10. The elevating mechanism according to claim 9, wherein the adjusting wheel comprises an opening and a pushing plate, wherein one pushing plate is respectively arranged on two sides of the opening, the first bending end and the second bending end extend out from the opening, and when the adjusting wheel rotates, the pushing plate is abutted against the first bending end or the second bending end.

11. Mowing device, characterized in that it comprises a heightening mechanism according to any one of claims 1 to 10, the target component being a blade.