Height adjusting mechanism and mower

Abstract

The invention discloses a height adjusting mechanism and a mower, and relates to the technical field of harvesting height adjusting.The height adjusting mechanism comprises a support; the handle assembly comprises a handle and an adjusting clamping plate connected with the support, the adjusting clamping plate is provided with a plurality of height adjusting cavities, and the handle can move to any height adjusting cavity; the connecting column assemblies are used for being connected with harvesting pieces; one end of the connecting rod assembly is rotationally connected to the connecting column assembly, the other end of the connecting rod assembly is connected with the handle, and the handle can move so that when any two height adjusting cavities can be switched, the connecting column assembly can be pushed or pulled under the action of the connecting rod assembly, so that height adjustment is achieved. According to the height adjusting mechanism, the height of the harvesting piece can be rapidly and conveniently adjusted by manually operating on the handle, and the height adjusting mechanism is simple and effective in structure, low in cost and good in applicability.

Description

Technical Field

[0001] The present invention relates to the field of harvesting height adjustment technology, and more specifically, to a height adjustment mechanism. In addition, the present invention also relates to a lawn mower comprising the height adjustment mechanism. Background Art

[0002] In the field of harvesting equipment, the harvesting height needs to be adaptively adjusted to suit different harvesting conditions. In the related art, the motor gear rack structure is used to provide a harvesting member with a translational movement to achieve the effect of height adjustment. However, in actual application, this adjustment method requires a separate driver to drive the motor, and the adjustment process is relatively complicated.

[0003] In summary, how to provide a convenient and simple method for adjusting the harvesting height is an urgent problem to be solved by those skilled in the art. Summary of the invention

[0004] In view of this, an object of the present invention is to provide a height adjustment mechanism with a simple structure, which can conveniently adjust the harvesting height of the harvesting member. Another object of the present invention is to provide a lawn mower including the height adjustment mechanism.

[0005] In order to achieve the above object, the present invention provides the following technical solutions:

[0006] A height adjustment mechanism, used for adjusting the height of a harvesting member, comprising:

[0007] Bracket;

[0008] A handle assembly, comprising a handle and an adjustment card plate connected to the bracket, wherein the adjustment card plate is provided with a plurality of height adjustment cavities, and the handle can be moved to any of the height adjustment cavities;

[0009] A plurality of connecting column assemblies, used for connecting the harvesting parts;

[0010] A connecting rod assembly, one end of which is rotatably connected to the connecting column assembly, and the other end of which is connected to the handle. When the handle moves to switch between any two of the height adjustment chambers, the connecting column assembly can be pushed or pulled under the action of the connecting rod assembly to achieve height adjustment.

[0011] Preferably, the adjustment card plate is tilted and includes a plurality of card members, and two adjacent card members form the height adjustment cavity;

[0012] The adjustment card plate is provided with a main adjustment cavity, and the main adjustment cavity is connected to the plurality of height adjustment cavities. The handle is movable to achieve switching between the main adjustment cavity and the height adjustment cavity.

[0013] Preferably, the handle assembly further comprises a connecting frame, and the end of the handle close to the connecting rod assembly is rotatably connected to the connecting frame;

[0014] A tension spring is arranged in the connecting frame, and the tension spring is sleeved on the part of the handle located in the connecting frame, and one end of the tension spring extends out of the connecting frame and abuts against the outer wall of the connecting frame, and the other end of the tension spring abuts against the part of the handle located outside the connecting frame, close to one side of the main regulating chamber.

[0015] Preferably, the connecting rod assembly includes a first connecting rod and a second connecting rod, the first end of the first connecting rod is rotatably connected to the bracket, the second end of the first connecting rod is rotatably connected to the first end of the second connecting rod, the second end of the second connecting rod is rotatably connected to the connecting frame, and the connecting part between the second end of the first connecting rod and the first end of the second connecting rod and the connecting column assembly are rotatably connected.

[0016] Preferably, the second connecting rod is provided with an elongated hole at the end close to the first connecting rod, and the elongated hole is arranged along the length direction of the second connecting rod, so as to provide floating space for the connecting column assembly relative to the connecting rod assembly when the harvesting piece is impacted.

[0017] Preferably, the connecting rod assembly further comprises a third connecting rod, the connecting frame is connected to the third connecting rod, one end of the third connecting rod is rotatably connected to the second connecting rod, and the other end of the third connecting rod is connected to the rear suspension shaft assembly;

[0018] The rear suspension shaft assembly is rotatably connected to the bracket, and the two third connecting rods located on both sides of the bracket are connected through the rear suspension shaft assembly, so as to achieve height adjustment of at least two groups of connecting column assemblies through the handle assembly.

[0019] Preferably, it also includes a front suspension shaft assembly, one end of which is rotatably connected to the bracket, and the other end of the front suspension shaft assembly is provided with a first connecting part and a second connecting part, the first connecting part is rotatably connected to the rear suspension shaft assembly through a lifting arm assembly, and the second connecting part is rotatably connected to the connecting column assembly located at the front end of the bracket, so as to realize height adjustment of at least three groups of the connecting column assemblies through the handle assembly.

[0020] Preferably, the connecting column assembly includes a connecting column and an adjusting head sleeved on the connecting column, and adjusting nuts are provided on both sides of the adjusting head. The adjusting nuts can move in the axial direction of the connecting column to adjust the initial connection position of the adjusting head on the connecting column.

[0021] Preferably, the adjusting head is provided with a rotating connection part, the axis of the rotating connection part is arranged perpendicular to the axis of the connecting column, and the rotating connection part is connected to the front suspension shaft assembly, or the connecting part connecting the second end of the first connecting rod and the first end of the second connecting rod.

[0022] The present invention also provides a lawn mower, comprising the height adjustment mechanism and a harvesting piece as described in any one of the above items, wherein the height adjustment mechanism is connected to the harvesting piece, and at least three groups of the connecting column assemblies are arranged between the harvesting piece and the bracket.

[0023] The height adjustment mechanism provided by the present invention is used for adjusting the height of the harvesting piece, and specifically includes a bracket, a handle assembly, a connecting column assembly and a connecting rod assembly, wherein the handle assembly includes a handle and an adjustment card plate connected to the bracket, and the handle can be moved to any height adjustment cavity on the adjustment card plate; one end of the connecting rod assembly is rotatably connected to the connecting column assembly, and the other end is connected to the handle, and the connecting column assembly is connected to the harvesting piece, and the corresponding harvesting piece can move accordingly when the connecting column assembly moves; specifically, when performing the height adjustment operation, the handle is moved to achieve switching between any two height adjustment cavities, so that the connecting rod assembly can be rotated by operating the handle, and further the connecting rod assembly is rotated to operate on the connecting column assembly, so that the connecting column assembly can be pushed or pulled to achieve the height adjustment of the harvesting piece connected to the connecting column assembly.

[0024] The beneficial effects of the present invention are: switching between multiple height adjustment cavities of the adjustment card is achieved through the movement of the handle, and further through the action of the connecting rod assembly connected by the rotation of the handle, the connecting column assembly is pushed or pulled, thereby correspondingly achieving the height adjustment of the harvesting piece connected to the connecting column assembly. In this process, the height can be quickly and conveniently adjusted by manual operation on the handle. The structure is simple and effective, the cost is low, and it has good applicability. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on the provided drawings without paying creative work.

[0026] Figure 1 A schematic diagram of the structure of the height adjustment mechanism provided by the present invention;

[0027] Figure 2 for Figure 1 A top view of

[0028] Figure 3 A partial enlarged view of the height adjustment mechanism provided by the present invention;

[0029] Figure 4 Another partial enlarged view of the height adjustment mechanism provided by the present invention;

[0030] Figure 5 A schematic diagram of the distribution position of the connecting column assembly provided by the present invention;

[0031] Figure 6 This is a schematic structural diagram of the regulating head provided by the present invention.

[0032] Figure 1-Figure 6 , the reference numerals include:

[0033] 1-bracket; 2-handle assembly; 3-connecting rod assembly; 4-connecting column assembly; 5-harvesting piece; 6-rear suspension shaft assembly; 7-front suspension shaft assembly; 8-fourth connecting rod; 9-fifth connecting rod; 10-mounting seat; 21-handle; 22-adjusting card plate; 23-connecting frame; 24-tension spring; 221-card; 222-height adjustment chamber; 223-main adjustment chamber; 31-first connecting rod; 32-second connecting rod; 33-third connecting rod; 321-long hole; 41-connecting column; 42-adjusting nut; 43-adjusting head; 431-rotating connection part; 71-first connection part; 72-second connection part. DETAILED DESCRIPTION

[0034] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the described embodiments are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the present invention.

[0035] The core of the present invention is to provide a height adjustment mechanism, which is simple and convenient to adjust the height of the mowing member, thereby improving the convenience and efficiency of height adjustment. Another core of the present invention is to provide a mower including the height adjustment mechanism.

[0036] The height adjustment mechanism provided by the present invention is used to achieve height adjustment of the harvesting member 5. The harvesting member 5 may be a component on a harvesting device, such as a knife disc, a cutting knife, and the like.

[0037] The height adjustment mechanism specifically includes a bracket 1, a handle assembly 2, a connecting column assembly 4 and a connecting rod assembly. Please refer to Figure 1 .

[0038] Please refer to Figure 2The handle assembly 2 includes a handle 21 and an adjustment card plate 22, wherein the adjustment card plate 22 is fixed on the bracket 1, and the handle 21 can move between multiple height adjustment cavities 222 of the adjustment card plate 22. Specifically, the handle 21 can be moved to any height adjustment cavity 222 by manual operation, and each height adjustment cavity 222 here corresponds to the working height of each harvesting component 5.

[0039] In one embodiment, the height adjustment cavity 222 is arranged along the height direction of the bracket 1, and the height switching is achieved by pressing down or lifting the handle 21 to any height adjustment cavity 222; in another embodiment, the height adjustment cavity 222 is arranged tilted, in which case, the handle 21 is tilted and moved to any height adjustment cavity 222 to achieve the height switching. The above two embodiments can be flexibly arranged in combination with the specific usage conditions without limitation.

[0040] A plurality of connecting column assemblies 4 are used to connect the harvesting parts 5. The connection here is specifically a fixed connection, such as welding or a reliable connection through fasteners. The connecting column assemblies 4 can be specifically provided in one, two, three or more quantities, specifically combined with the model size of the harvesting parts 5, to ensure that the harvesting parts 5 can be reliably and smoothly lifted or lowered by the setting of a plurality of connecting column assemblies 4, so as to achieve the effect of reliable height adjustment operation.

[0041] Specifically, one end of the connecting column assembly 4 away from the harvesting member 5 is rotatably connected to the connecting rod assembly 3, so that when the connecting rod assembly 3 rotates, it can push or pull the connecting column assembly 4 to adjust the height of the harvesting member 5.

[0042] One end of the connecting rod assembly 3 is rotatably connected to the connecting column assembly 4, and the other end is connected to the handle 21. When the handle 21 is switched between any two height adjustment chambers 222, the connecting rod assembly 3 will rotate to generate a force, which can push or pull the connecting column assembly 4. When the connecting column assembly 4 is pushed, the harvesting part 5 moves downward, resulting in a lowered height; when the connecting column assembly 4 is pulled, the harvesting part 5 moves upward, resulting in an increased height.

[0043] In the above embodiment, the manual operation handle 21 can be used to realize the process of adjusting the height of the harvesting element 5 by acting on the connecting column assembly 4 through the connecting rod assembly 3 and then working on the harvesting element 5. No other complex power components are required, the structure is simple and effective, and the height adjustment is simple and convenient.

[0044] Based on the above embodiments, please refer to Figure 2The adjusting card plate 22 is tilted and includes a plurality of card members 221, and two adjacent card members 221 form a height adjustment cavity 222. The card members 221 here can limit the portion of the handle 21 moved into the height adjustment cavity 222, so that the harvesting member 5 can maintain this height after height adjustment for reliable operation.

[0045] In a specific embodiment, a slope and / or arc surface is provided at one end of the clamp 221 near the main adjustment cavity 223 of the adjustment clamp plate 22, so that when the handle 21 is operated, the handle 21 can be smoothly switched between any two height adjustment cavities 222, thereby ensuring the reliability of height adjustment.

[0046] Preferably, the inclined surface and / or arc surface here can be arranged at a position corresponding to this end and the height adjustment cavity 222.

[0047] Please refer to Figure 2 The adjustment card plate 22 is provided with a main adjustment cavity 223, which is connected to a plurality of height adjustment cavities 222. The handle 21 can be moved to realize the switching between the main adjustment cavity 223 and the height adjustment cavity 222. The main adjustment cavity 223 is specifically the entire long strip cavity opened on the adjustment card plate 22. When the handle 21 is operated and moved, it is first moved into the main adjustment cavity 223 through a certain height adjustment cavity 222, and then moved from the main adjustment cavity 223 into another height adjustment cavity 222 that needs to be moved into.

[0048] That is, the movement direction of the handle 21 is not a single up and down movement, but a movement in multiple directions. It can also be said that the switching of multiple height adjustment gears is achieved through the multi-directional movement of the handle 21.

[0049] In this embodiment, the adjustment card plate 22 is set to an inclined setting to provide a larger operating space, so that the operator can easily make adjustments and can determine the height of the harvesting component 5 at this time by observing the position of the height adjustment cavity 222 where the handle 21 is located, so as to improve the accuracy and reliability of the height adjustment operation.

[0050] Of course, in order to facilitate observation, scales or marks can be set on the adjustment card plate 22 at positions corresponding to each height adjustment cavity 222 so that the operator can know the height information of the harvesting element 5.

[0051] Based on any of the above embodiments, please refer to Figure 1 The handle assembly 2 further includes a connecting frame 23, and the end of the handle 21 close to the connecting rod assembly 3 is rotatably connected to the connecting frame 23. The handle 21 specifically includes a hand-held end and a manipulation end connected to the hand-held end. The hand-held end is used for manual grasping, and the manipulation end is a multi-section bar structure. The multi-section bar structure specifically includes bars in three directions, such as Figure 1 , Figure 4The connecting frame 23 is used for fixed connection with the connecting rod assembly 3, and the operating end has a part located in the connecting frame 23, and this part can be rotatably connected with the connecting frame 23, when the handle 21 moves in the adjustment card plate 22 for height adjustment, this part can rotate relatively to form a match.

[0052] A tension spring 24 is arranged in the connecting frame 23. The tension spring 24 is sleeved on the part of the handle 21 located in the connecting frame 23, and one end of the tension spring 24 extends out of the connecting frame 23 and abuts against the outer wall of the connecting frame 23, and the other end of the tension spring 24 abuts against the part of the handle 21 located outside the connecting frame 23 and close to the side of the main adjustment cavity 223. Specifically, the tension spring 24 can provide a damping force when the handle 21 moves. When the handle 21 is in the height adjustment cavity 222, the tension spring 24 blocks the side of the handle close to the main adjustment cavity 223 to ensure stability and reliability in this state; when the handle 21 moves to move out of a certain height adjustment cavity 222 and passes through the main adjustment cavity 223 first, the tension spring 24 is first compressed. When the handle 21 moves to another height adjustment cavity 222, the compression force can make the handle 21 enter quickly, thereby improving the convenience of adjusting the height.

[0053] Among them, one end of the tension spring 24 extends out of the connecting frame 23 and abuts against the outer wall of the connecting frame 23. Specifically, one end of the tension spring 24 can pass through the through hole on the connecting frame 23, and the end of the tension spring 24 is bent to abut against the outer wall of the connecting frame 23 to form a limit.

[0054] Based on any of the above embodiments, please refer to Figure 4 The connecting rod assembly 3 includes a first connecting rod 31 and a second connecting rod 32. The first end of the first connecting rod 31 is rotatably connected to the bracket 1, the second end of the first connecting rod 31 is rotatably connected to the first end of the second connecting rod 32, the second end of the second connecting rod 32 is rotatably connected to the connecting frame 23, and the connecting part of the second end of the first connecting rod 31 and the first end of the second connecting rod 32 and the connecting column assembly 4 are rotatably connected.

[0055] Specifically, the first connecting rod 31 and the second connecting rod 32 are rotatably connected, and the connecting frame 23 can be fixed on the second connecting rod 32. When the handle 21 moves in the adjusting card plate 22, the connecting frame 23 acts on the second connecting rod 32 and the first connecting rod 31, and the connecting part of the second end of the first connecting rod 31 and the first end of the second connecting rod 32 and the connecting column assembly 4 are rotatably connected. When the handle 21 is operated to rotate the first connecting rod 31 and the second connecting rod 32, a corresponding force can be generated to push or pull the connecting column assembly 4, so that the harvesting component 5 connected to the connecting column assembly 4 can be adjusted in height. The height adjustment here also refers to the adjustment along the height direction of the bracket 1.

[0056] In this embodiment, the number of first connecting rods 31 and second connecting rods 32 can be set accordingly according to the number of connecting column assemblies 4, or a group of connecting rod assemblies 3 can correspond to several connecting column assemblies 4 through connecting rods or connecting shaft-like components, and can be flexibly set according to actual needs.

[0057] The rotation connection mentioned in this embodiment can be connected through a rotating shaft. In order to ensure the reliability of the rotating shaft operation, a locking member can be provided on the rotating shaft to prevent the rotating shaft from slipping off the connecting rod.

[0058] Based on any of the above embodiments, please refer to Figure 4 The second connecting rod 32 is provided with a long hole 321 at the end close to the first connecting rod 31. The long hole 321 is arranged along the length direction of the second connecting rod 32 to provide a floating space for the connecting column assembly 4 relative to the connecting rod assembly 3 when the harvesting member 5 is impacted.

[0059] When the harvesting part 5 is operating, since the ground is not very flat when the harvesting equipment is moving, the harvesting part 5 will be subjected to a certain impact due to the uneven ground or the force of harvesting crops. By setting the long holes 321, a certain floating space can be provided between the connecting column assembly 4 and the connecting rod assembly 3, so as to be able to perform adaptive adjustment and avoid damage to the harvesting part 5 or other related parts.

[0060] The specific size of the long hole 321 is set according to the actual harvesting scene, and cannot be set too large to avoid affecting the stability and reliability of the harvesting operation of the harvesting member 5 and the structural strength of the second connecting rod 32.

[0061] Based on any of the above embodiments, please refer to Figure 4 The connecting rod assembly 3 also includes a third connecting rod 33, the connecting frame 23 is connected to the third connecting rod 33, and one end of the third connecting rod 33 is rotatably connected to the second connecting rod 32, and the other end of the third connecting rod 33 is connected to the rear suspension shaft assembly 6. The third connecting rod 33 is provided to provide a position for the connection of the connecting frame 23, and can be connected to the rear suspension shaft assembly 6. The first connecting rod 31, the second connecting rod 32 and the third connecting rod 33 are connected to form the connecting rod assembly 3. When the handle 21 is operated and moved, the third connecting rod 33 is acted on through the connecting frame 23, and further acts on the second connecting rod 32 and the connecting column assembly 4 rotatably connected to the second connecting rod 32, so as to achieve the operation effect of pushing or pulling the connecting column assembly 4. Among them, the first connecting rod 31 can be connected to the bracket 1, and the third connecting rod 33 can be connected to the rear suspension shaft assembly 6, so as to provide better support for the connecting rod assembly 3 when rotating, and ensure the reliable stability of height adjustment.

[0062] The rear suspension axle assembly 6 is rotatably connected to the bracket 1. Specifically, the rear suspension axle assembly 6 is rotatably connected to the bracket 1 through a mounting seat 10. An upper suspension axle sleeve and a lower suspension axle sleeve can be set in the mounting seat 10. The rear suspension axle assembly 6 is clamped in the mounting seat 10 by the upper suspension axle sleeve and the lower suspension axle sleeve. The mounting seat 10 can be detachably connected to the bracket 1 to ensure reliable connection of the rear suspension axle assembly 6.

[0063] The two third connecting rods 33 located on both sides of the bracket 1 are connected by the rear suspension shaft assembly 6, so as to realize the height adjustment of at least two groups of connecting column assemblies 4 through the handle assembly 2. That is, the connecting rod assembly 3 is provided on both sides of the rear suspension shaft assembly 6, and the two sides here refer to the two sides perpendicular to the traveling direction. The third connecting rod 33 is connected to both sides of the rear suspension shaft assembly 6, so that the force generated by the movement of the handle 21 can be transmitted to both sides through the third connecting rod 33, so that the connecting column assemblies 4 corresponding to the two sides of the rear suspension shaft assembly 6 can move synchronously, so as to ensure the reliable stability of the harvesting member 5 when the height is adjusted.

[0064] Based on any of the above embodiments, please refer to Figure 1 , Figure 3 , and also includes a front suspension shaft assembly 7, one end of the front suspension shaft assembly 7 is rotatably connected to the bracket 1, and the other end of the front suspension shaft assembly 7 is provided with a first connecting part 71 and a second connecting part 72, the first connecting part 71 is rotatably connected to the rear suspension shaft assembly 6 through the lifting arm assembly, and the second connecting part 72 is rotatably connected to the connecting column assembly 4 located at the front end of the bracket 1, so as to realize the height adjustment of at least three groups of connecting column assemblies 4 through the handle assembly 2.

[0065] like Figure 3 As shown, the first connection part 71 and the second connection part 72 are arranged in parallel, and the first connection part 71 can be connected to the lifting arm assembly to transmit the force when the handle 21 moves, so that the front suspension shaft assembly 7 can rotate relative to the bracket 1, and the second connection part 72 is rotatably connected to the connecting column assembly 4 at the front end of the bracket 1. Then, the force generated when the front suspension shaft assembly 7 rotates can be transmitted to the connecting column assembly 4 at the front end through the second connection part 72, thereby realizing the change of the height of the connecting column assembly 4.

[0066] In this embodiment, the lifting arm assembly specifically includes a fourth link 8 and a fifth link 9 rotatably connected to the fourth link 8, wherein one end of the fourth link 8 is connected to the rear suspension shaft assembly 6, and the other end is rotatably connected to the fifth link 9, and the other end of the fifth link 9 is connected to the first connecting portion 71. When the rear suspension shaft assembly 6 rotates, the front suspension shaft assembly 7 can be rotated through the fourth link 8 and the fifth link 9, and then the connecting column assembly 4 at the front end of the bracket 1 can be lifted or lowered through the front suspension shaft assembly 7, so that it can be lifted or lowered synchronously with the connecting column assembly 4 at the rear end of the bracket 1.

[0067] The front suspension shaft assembly 7 and the rear suspension shaft assembly 6 are respectively located at the front end and the rear end of the bracket 1. The front suspension shaft assembly 7 and the rear suspension shaft assembly 6 are correspondingly provided with a connecting column assembly 4. By setting at least three groups of connecting column assemblies 4, the height position of the harvesting component 5 can be changed through a relatively stable structure.

[0068] like Figure 1 , Figure 5 The front suspension shaft assembly 7 corresponds to a group of connecting column assemblies 4, and the two sides of the rear suspension shaft assembly 6 correspond to two groups of connecting column assemblies 4. The three groups of connecting column assemblies 4 can form a stable triangular structure, so that the handle 21 can be moved through the two groups of connecting rod assemblies 3 and the connecting arm assembly to transmit the force to the corresponding three groups of connecting column assemblies 4 respectively, so as to realize the lifting or lowering of the height of the harvesting component 5.

[0069] Based on any of the above embodiments, please refer to Figure 4 The connecting column assembly 4 includes a connecting column 41 and an adjusting head 43 sleeved on the connecting column 41. Adjusting nuts 42 are provided on both sides of the adjusting head 43. The adjusting nuts 42 can move in the axial direction of the connecting column 41 to change the initial connection position of the adjusting head 43 on the connecting column 41.

[0070] Specifically, one end of the connecting column 41 is fixed to the end surface of the harvesting member 5 away from the working surface, and can be arranged by welding or connecting with fasteners to ensure a reliable and stable connection, and there is no specific limitation.

[0071] The adjusting head 43 is mainly used to achieve the connection between the connecting column assembly 4 and the first connecting rod 31 and the second connecting rod 32. Specifically, the adjusting head 43 is clamped between the adjusting nuts 42 on both sides thereof, and the adjusting nuts 42 are threadedly connected to the connecting column assembly 4, and the positions of the adjusting nuts 42 on both sides can be changed by threaded connection, that is, the position of the adjusting head 43 on the connecting column 41 can be changed. Before starting the harvesting operation, the position of the adjusting nut 42 can be manually adjusted to change the position of the adjusting head 43, that is, the initial harvesting height of the harvesting member 5 can be changed accordingly.

[0072] In a specific embodiment, the adjusting head 43 can also be threadedly connected to the connecting column 41, and the adjusting nuts 42 on both sides are provided for further reinforcement to ensure that the adjusting head 43 will not fall off the connecting column 41, thereby ensuring the reliability and stability of the rotational connection between the adjusting head 43 and the connecting rod assembly 3.

[0073] In another specific embodiment, the adjusting head 43 does not need to be threadedly connected to the connecting column 41. In this case, the position adjustment of the adjusting head 43 is relatively convenient. The position of the adjusting head 43 on the connecting column 41 can be changed by manually pushing and pulling the adjusting head 43, and the position of the adjusting head 43 can be fixed by adjusting the nut 42.

[0074] Based on any of the above embodiments, please refer to Figure 6 The adjusting head 43 is provided with a rotating connection part 431, the axis of the rotating connection part 431 is arranged perpendicular to the axis of the connecting column 41, and the rotating connection part 431 is connected to the front suspension shaft assembly 7, or the connecting part connecting the second end of the first connecting rod 31 and the first end of the second connecting rod 32.

[0075] A step can be formed between the rotating connection part 431 and the part where the adjusting head 43 is sleeved on the connecting column 41. This step is mainly used when the first connecting rod 31 and the second connecting rod 32 are connected to the rotating connection part 431 without affecting the connection between the adjusting head 43 and the connecting column 41.

[0076] After the second end of the first connecting rod 31 and the first end of the second connecting rod 32 are connected to the rotating connecting portion 431, the second end of the first connecting rod 31 and the first end of the second connecting rod 32 need to be relatively reliably connected to the adjusting head 43 with the help of the structure of the limiting plate and the locking pin.

[0077] In addition to the above-mentioned height adjustment mechanism, the present invention also provides a lawn mower, comprising the height adjustment mechanism of any of the above-mentioned embodiments, and a harvesting piece 5, wherein the height adjustment mechanism is connected to the harvesting piece 5, and at least three groups of connecting column assemblies 4 are arranged between the harvesting piece 5 and the bracket 1.

[0078] The various embodiments in this specification are described in a progressive manner, and each embodiment focuses on the differences from other embodiments. The same or similar parts between the various embodiments can be referenced to each other.

[0079] The above is a detailed introduction to a height adjustment mechanism and a lawn mower provided by the present invention. This article uses specific examples to illustrate the principles and implementation methods of the present invention. The description of the above embodiments is only used to help understand the method of the present invention and its core idea. It should be pointed out that for ordinary technicians in this technical field, without departing from the principle of the present invention, the present invention can also be improved and modified in a number of ways, and these improvements and modifications also fall within the scope of protection of the claims of the present invention.

Claims

1. A height adjustment mechanism for adjusting the height of a harvesting member (5), characterized in that: include: Bracket (1); A handle assembly (2), comprising a handle (21), and an adjustment card plate (22) connected to the bracket (1), wherein the adjustment card plate (22) is provided with a plurality of height adjustment cavities (222), and the handle (21) can be moved to any of the height adjustment cavities (222); A plurality of connecting column assemblies (4) used for connecting the harvesting member (5); A connecting rod assembly (3), one end of the connecting rod assembly (3) is rotatably connected to the connecting column assembly (4), and the other end of the connecting rod assembly (3) is connected to the handle (21). When the handle (21) moves to switch between any two of the height adjustment chambers (222), the connecting column assembly (4) can be pushed or pulled under the action of the connecting rod assembly (3) to achieve height adjustment.

2. The height adjustment mechanism according to claim 1, characterized in that: The adjustment clamping plate (22) is arranged obliquely and comprises a plurality of clamping members (221), and two adjacent clamping members (221) form the height adjustment cavity (222); The adjustment card plate (22) is provided with a main adjustment cavity (223), the main adjustment cavity (223) is connected to a plurality of the height adjustment cavities (222), and the handle (21) is movable to achieve switching between the main adjustment cavity (223) and the height adjustment cavity (222).

3. The height adjustment mechanism according to claim 2, characterized in that: The handle assembly (2) further comprises a connecting frame (23), and an end of the handle (21) close to the connecting rod assembly (3) is rotatably connected to the connecting frame (23); A tension spring (24) is arranged inside the connecting frame (23), and the tension spring (24) is sleeved on the portion of the handle (21) located inside the connecting frame (23), and one end of the tension spring (24) extends out of the connecting frame (23) and abuts against an outer wall of the connecting frame (23), and the other end of the tension spring (24) abuts against a portion of the handle (21) located outside the connecting frame (23) and close to one side of the main regulating chamber (223).

4. The height adjustment mechanism according to claim 3, characterized in that: The connecting rod assembly (3) comprises a first connecting rod (31) and a second connecting rod (32); the first end of the first connecting rod (31) is rotatably connected to the bracket (1); the second end of the first connecting rod (31) is rotatably connected to the first end of the second connecting rod (32); the second end of the second connecting rod (32) is rotatably connected to the connecting frame (23); and the connecting portion between the second end of the first connecting rod (31) and the first end of the second connecting rod (32) and the connecting column assembly (4) are rotatably connected.

5. The height adjustment mechanism according to claim 4, characterized in that: The second connecting rod (32) is provided with an elongated hole (321) at an end portion close to the first connecting rod (31); the elongated hole (321) is provided along the length direction of the second connecting rod (32) and is used to provide floating space for the connecting column assembly (4) relative to the connecting rod assembly (3) when the harvesting member (5) is impacted.

6. The height adjustment mechanism according to claim 5, characterized in that: The connecting rod assembly (3) further comprises a third connecting rod (33), the connecting frame (23) is connected to the third connecting rod (33), one end of the third connecting rod (33) is rotatably connected to the second connecting rod (32), and the other end of the third connecting rod (33) is connected to the rear suspension shaft assembly (6); The rear suspension shaft assembly (6) is rotatably connected to the bracket (1), and the two third connecting rods (33) located on both sides of the bracket (1) are connected via the rear suspension shaft assembly (6), so as to achieve height adjustment of at least two groups of the connecting column assemblies (4) via the handle assembly (2).

7. The height adjustment mechanism according to claim 6, characterized in that: It also comprises a front suspension shaft assembly (7), one end of which is rotatably connected to the bracket (1), and the other end of the front suspension shaft assembly (7) is provided with a first connection part (71) and a second connection part (72), the first connection part (71) being rotatably connected to the rear suspension shaft assembly (6) via a lifting arm assembly, and the second connection part (72) being rotatably connected to the connecting column assembly (4) located at the front end of the bracket (1), so as to achieve height adjustment of at least three groups of the connecting column assemblies (4) via the handle assembly (2).

8. The height adjustment mechanism according to any one of claims 4 to 7, characterized in that: The connecting column assembly (4) comprises a connecting column (41), an adjusting head (43) sleeved on the connecting column (41), and adjusting nuts (42) are provided on both sides of the adjusting head (43). The adjusting nuts (42) are movable in the axial direction of the connecting column (41) so as to adjust the initial connection position of the adjusting head (43) on the connecting column (41).

9. The height adjustment mechanism according to claim 8, characterized in that: The regulating head (43) is provided with a rotating connection portion (431), the axis of the rotating connection portion (431) is arranged perpendicular to the axis of the connecting column (41), and the rotating connection portion (431) is connected to the front suspension shaft assembly (7), or to a connecting portion connecting the second end of the first connecting rod (31) and the first end of the second connecting rod (32).

10. A lawn mower, characterized in that: It comprises the height adjustment mechanism according to any one of claims 1 to 9, and a harvesting piece (5), wherein the height adjustment mechanism is connected to the harvesting piece (5), and at least three groups of the connecting column assemblies (4) are arranged between the harvesting piece (5) and the bracket (1).

Images