Adjusting mechanism of a cutter head and a mower

Abstract

The application provides a cutter head adjusting mechanism and a mower, which comprises a first linkage assembly, a first fixed seat arranged at the head end of the cutter head, a first movable block rotatably arranged on the first fixed seat, and a vehicle frame movably connected to the end of the first movable block away from the first fixed seat; two second linkage assemblies arranged at the tail end of the cutter head in a mirror image manner; and a linkage rod connected to the first movable block and the other second movable block to drive the linkage rod to push the first movable block to rotate forward and backward, when the first movable block rotates forward, the first fixed seat rotates forward relative to the first movable block, and the head end of the cutter head moves downward, and when the second movable block rotates backward, the first fixed seat rotates backward relative to the first movable block, and the head end of the cutter head moves upward. The application solves the technical problem of the inconvenient adjustment of the cutting tool of the traditional mower.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of weeding equipment, in particular to a cutter disc adjusting mechanism and a mower. BACKGROUND

[0002] The mower is a mechanical tool for trimming lawns, vegetation and the like, which saves the working time of weeding workers and reduces a large amount of human resources. In the process of mowing, according to the height of the lawn or the plant, the trimming height of the mower needs to be adjusted at any time, that is, the height of the cutting tool of the mowing device needs to be adjusted. Most of the mowing devices need to adjust the height of the cutting tool while observing the cutting tool height indicating strip, and some even need to adjust while observing, which is very inconvenient to operate. SUMMARY

[0003] In view of the deficiencies in the prior art, the present application provides a cutter disc adjusting mechanism and a mower, which solves the problem of inconvenient adjustment of the cutting tool of the mower in the prior art.

[0004] According to an embodiment of the present application, a cutter disc adjusting mechanism is used to adjust the height of the cutter disc, the cutter disc has a leading end and a trailing end, and the adjusting mechanism comprises: a first linkage assembly, comprising a first fixed seat arranged at the leading end of the cutter disc, and a first movable block rotatably arranged at the first fixed seat, one end of the first movable block away from the first fixed seat being movably connected with a frame;

[0005] Two second linkage assemblies are arranged in mirror image at the trailing end of the cutter disc, each second linkage assembly comprises a second fixed seat fixed to the cutter disc, and a second movable block rotatably arranged at the second fixed seat, the two second movable blocks are connected by a connecting rod, and one of the second movable blocks movably arranges a gear lever, so as to drive the gear lever to move back and forth along the leading end and the trailing end of the cutter disc under the action of an external force, and make the gear lever drive the trailing end of the cutter disc to move downward or upward through the second movable block; and

[0006] A linkage rod is connected between the first movable block and the other second movable block, so as to drive the linkage rod to push the first movable block to rotate forward or backward. When the first movable block rotates forward, the first fixed seat rotates forward relative to the first movable block, so that the leading end of the cutter disc moves downward. When the second movable block rotates backward, the first fixed seat rotates backward relative to the first movable block, so that the leading end of the cutter disc moves upward.

[0007] Preferably, the first movable block is formed with a first hinge point and a second hinge point arranged at intervals, the first fixed seat is arranged at the first hinge point, and the frame is arranged at the second hinge point.

[0008] Preferably, the frame extends downward to form a connecting seat, which is located at the second hinge point.

[0009] Preferably, from the first end to the last end of the cutter head, the connecting seat is provided with a first sliding groove, a first pin is slidably disposed in the first sliding groove, and is connected to the first movable block.

[0010] Preferably, the linkage is inclined.

[0011] Preferably, the second movable block has a third hinge point and a fixed mounting point spaced apart, the second fixed seat is located at the third hinge point, and the connecting rod is located at the fixed mounting point.

[0012] Preferably, the second movable block is provided with a second sliding groove along the vertical direction, and the second pin is slidably disposed in the second sliding groove and connected to the second fixed seat.

[0013] Preferably, the frame is provided with a gear position seat, and from the first end of the cutter head to its last end, the gear position seat forms a plurality of gear position slots, and the gear position lever can be selectively inserted into any one of the gear position slots.

[0014] Preferably, the gear lever is connected to the vehicle frame via a torsion spring.

[0015] The present invention also proposes a lawnmower, including the aforementioned blade adjustment mechanism.

[0016] Compared with the prior art, the present invention has the following beneficial effects: By setting a first linkage component and a second linkage component at the beginning and end of the cutter head, and setting two second linkage components connected by a connecting rod, the two linkage components are arranged in a mirror image, so that a connection structure with high stability is formed between the first linkage component and the second linkage component, which improves the stability of the adjustment mechanism during use; at the same time, the first linkage component and the second linkage component are connected by a linkage rod, so that when the adjustment mechanism adjusts the cutter head, it is only necessary to operate the gear lever connected to the second linkage component to adjust the height of the cutter head, which improves the convenience of use.

[0017] Compared with the prior art, the present invention has the following beneficial effects: By setting a first linkage component and a second linkage component at the beginning and end of the blade disc, and setting two second linkage components connected by a connecting rod, the two linkage components are arranged in a mirror image, so that a highly stable connection structure is formed between the first linkage component and the second linkage component, which improves the stability of the adjustment mechanism during use; at the same time, the first linkage component and the second linkage component are connected by a linkage rod, so that when the adjustment mechanism adjusts the blade disc, it is only necessary to operate the gear lever connected to the second linkage component to adjust the blade disc height. This solves the technical problems of inconvenient and cumbersome adjustment of traditional lawnmower blades, and improves the convenience and stability of lawnmower blade height adjustment. Attached Figure Description

[0018] Figure 1 This is a schematic diagram of the cutter head adjustment mechanism of the present invention;

[0019] Figure 2 for Figure 1 A magnified view of a section at point A in the middle;

[0020] Figure 3 This is a schematic diagram of another orientation of the cutter head adjustment mechanism in this invention;

[0021] Figure 4 for Figure 3 A magnified view of a section at point B in the middle;

[0022] Figure 5 for Figure 3 A magnified view of a section at point C;

[0023] Figure 6 This is a side view of the cutter head adjustment mechanism in this invention.

[0024] In the picture:

[0025] 1. Chassis; 2. Cutter head; 3. First linkage assembly; 301. First fixed seat; 302. First movable block; 303. First hinge point; 304. Second hinge point; 305. First slide groove; 4. Second linkage assembly; 401. Second fixed seat; 402. Second movable block; 403. Third hinge point; 404. Fixed mounting point; 405. Second slide groove; 5. Connecting rod; 6. Linkage rod; 7. Gear lever; 8. Gear seat; 801. Gear slot; 9. Connecting seat; 10. First pin; 11. Second pin; 12. Torsion spring. Detailed Implementation

[0026] It should be noted that, in the description of this invention, unless otherwise explicitly specified and limited, the terms "set," "install," "connect," etc., should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this invention according to the specific circumstances.

[0027] The following will be combined with the appendix Figures 1-6 The present invention will be further described below.

[0028] Example 1

[0029] This invention provides an adjustment mechanism for a cutter head 2, used to adjust the height of the cutter head 2. The cutter head 2 has a head end and an end end. The adjustment mechanism includes:

[0030] The first linkage component 3 includes a first fixed seat 301 disposed at the head end of the cutter head 2, and a first movable block 302 rotatably disposed on the first fixed seat 301, wherein the end of the first movable block 302 away from the first fixed seat 301 is movably engaged with the frame 1.

[0031] Two second linkage components 4 are mirror-image disposed at the end of the cutter head 2. Each second linkage component 4 includes a second fixed seat 401 fixed to the cutter head 2 and a second movable block 402 rotatably disposed on the second fixed seat 401. The two second movable blocks 402 are connected by a connecting rod 5, and one of the second movable blocks 402 is movably provided with a stop lever 7, so that under the action of external force, the stop lever 7 is driven to move back and forth along the head end and the tail end of the cutter head 2, so that the stop lever 7 moves downward or upward through the second movable block 402 in linkage with the tail end of the cutter head 2; and

[0032] Linkage rod 6 connects the first movable block 302 and another second movable block 402 to drive the linkage rod 6 to push the first movable block 302 to rotate in both directions. When the first movable block 302 rotates in reverse, the first fixed seat 301 rotates clockwise relative to the first movable block 302, causing the head end of the cutter head 2 to move downward. When the second movable block 402 rotates clockwise, the first fixed seat 301 rotates clockwise relative to the first movable block 302, causing the head end of the cutter head 2 to move upward.

[0033] In this embodiment, in order to facilitate the adjustment of the height of the cutting blade during use, the blade disc 2 (with the cutting blade located in the cavity of the blade disc 2) is movably mounted on the frame 1 of the lawnmower. The blade disc 2 is provided with a first linkage component 3 and a second linkage component 4. The first linkage component 3 is located at the front end of the blade disc 2, and the second linkage component 4 is located at the rear end of the blade disc 2. In order to improve the stability of the blade disc 2 during use, the two mirror-shaped second linkage components 4 are located at the rear end of the blade disc 2, forming a triangular connection structure with the first linkage component 3. This can improve the stability of the blade disc 2 when adjusting it.The first linkage assembly 3 includes a first fixed seat 301 fixedly disposed at the head end of the cutter head 2 and a first movable block 302 rotatably disposed at the first fixed seat 301. The end of the first movable block 302 away from the first fixed seat 301 is movably engaged with the frame 1. The second linkage assembly 4 includes a second fixed seat 401 fixedly disposed at the tail end of the cutter head 2 and a second movable block 402 rotatably disposed at the second fixed seat 401. The two second movable blocks 402 are connected by a connecting rod 5, and one of the second movable blocks 402 is movably provided with a gear lever 7, which is used to drive the gear lever 7 to move back and forth along the head end and tail end of the cutter head 2 under the action of external force (i.e., the gear lever 7 moves forward and backward along the head end and tail end of the cutter head 2). (Moving back and forth), another second movable block 402 is connected to the first movable block 302 via a linkage rod 6, so that under the drive of the gear lever 7, one of the second movable blocks 402 drives the other second movable block 402 to move together with the first movable block 302 via a connecting rod 5. That is, when the gear lever 7 moves forward, one of the second movable blocks 402 connected to the gear lever 7 rotates counterclockwise, causing the second fixed seat 401 rotatably connected to it to move downward. At the same time, the other second movable block 402, which is mirrored with it, rotates clockwise, causing the second fixed seat 401 rotatably connected to it to move downward. (The second movable block 402 and the second movable block 302 move backward and forward). The second movable block 402 is rotatably connected to the first movable block 302, while the second fixed block 401 is fixedly connected to the cutter head 2. Therefore, when the second movable block 402 rotates clockwise or counterclockwise, the second fixed block 401 can only move up and down (i.e., the second fixed block 401 can only lift or lower the cutter head 2). At this time, the end of the cutter head 2 is in a downward-pressing state. The other second movable block 402 is connected to the first movable block 302 via a linkage rod 6. That is, when the other second movable block 402 rotates clockwise, it drives the linkage rod 6 forward, causing the first movable block 302 connected to the linkage rod 6 to reverse direction. Since the first movable block 302 and the first fixed block 301 are rotatably connected... The first movable block 302 is movably connected to the frame 1 at one end away from the first fixed seat 301, so that the first movable block 302 can reverse (rotate counterclockwise) under the cooperation of the two connection points and the push of the linkage rod 6. During this process, the first fixed seat 301 fixed on the head end of the cutter head 2 keeps the rotation direction of the two blocks consistent through the rotation connection point with the first movable block 302. That is, when the first movable block 302 rotates counterclockwise, the first fixed seat 301 also rotates counterclockwise with the first movable block 302 and drives the head end of the cutter head 2 fixedly connected to it to move downward, thus realizing the reduction of the height of the cutter head 2.When the gear lever 7 moves backward, one of the second movable blocks 402 connected to the gear lever 7 rotates clockwise, causing the second fixed seat 401 connected to it to move upward. Another second movable block 402 and second fixed seat 401, mirror-shaped to the current second movable block 402 and second fixed seat 401, move together with the current second movable block 402 and second fixed seat 401 under the action of the connecting rod 5. That is, the other second movable block 402 rotates counterclockwise, causing the other second fixed seat 401 to move upward. At this time, the cutter head... The end of 2 is lifted upward by the movement of the two second fixed seats 401. When the other second movable block 402 rotates counterclockwise, it can drive the linkage rod 6 to move backward, and cause the first movable block 302 connected to the linkage rod 6 to rotate clockwise. Since the first movable block 302 is rotatably connected to the first fixed seat 301, and the end of the first movable block 302 away from the first fixed seat 301 is movably connected to the frame 1, the first movable block 302 can cooperate at the two connection points and be pulled by the linkage rod 6 (the linkage rod 6 moves backward). To achieve forward rotation, the first fixed seat 301, fixed to the head end of the cutter head 2, maintains the same rotation direction as the first movable block 302 through their rotational connection point. That is, as the first movable block 302 rotates clockwise, the first fixed seat 301 also rotates clockwise, causing the head end of the cutter head 2, which is fixedly connected to it, to move upwards, thus raising the height of the cutter head 2. Through the coordinated use of the first linkage component 3, the second linkage component 4, the connecting rod 5, and the linkage rod 6, the user only needs to operate the gear lever 7 to move it forward and backward to achieve the height adjustment function of the cutter head 2, simplifying the operation process and improving ease of use. The second linkage component 4 is mirror-image positioned at the end of the cutter head 2, and the first linkage component 3 is spaced apart at the head end of the cutter head 2, forming a triangular connection structure. When the gear lever 7 drives the movable blocks to rotate, the three-in-one function is achieved with the cooperation of the connecting rod 5 and the linkage rod 6, making the height adjustment function of the cutter head 2 more stable.

[0034] The first movable block 302 has a first hinge point 303 and a second hinge point 304 that are spaced apart. The first fixed seat 301 is located at the first hinge point 303, and the frame 1 is located at the second hinge point 304.

[0035] In this embodiment, the first movable block 302 has a first hinge point 303 and a second hinge point 304 spaced apart. The first fixed seat 301 is rotatably connected to the first movable block 302 through the first hinge point 303, and the frame 1 is rotatably connected to the first movable block 302 through the second hinge point 304. That is, when the linkage rod 6 moves forward, it pushes the first movable block 302 to rotate counterclockwise. Since the first movable block 302 is rotatably connected to both the first hinge point 303 and the second hinge point 304, the first movable block 302 rotates counterclockwise relative to the first fixed seat 301 through the first hinge point 303 under the push of the linkage rod 6. The first movable block 302 rotates counterclockwise relative to the frame 1 through the second hinge point 304. The first fixed seat 301, which is rotatably connected to the first movable block 302, rotates together with the first movable block 302. That is, the counterclockwise rotation of the first fixed seat 301 drives the head end of the cutter head 2 to move downward.

[0036] The frame 1 extends downward to form a connecting seat 9, which is located at the second hinge point 304.

[0037] In this embodiment, a connecting seat 9 is formed on the frame 1. The connecting seat 9 is rotatably connected to the first movable block 302 through the second hinge point 304, so as to guide the rotation direction of the first movable block 302 and the first fixed seat 301. With the cooperation of the first hinge point 303 and the second hinge point 304, the first movable block 302 can only rotate counterclockwise or clockwise. The first fixed seat 301 is hinged to the first movable block 302 through the first hinge point 303, so that the rotation direction of the first fixed seat 301 is consistent with the rotation direction of the first movable block 302.

[0038] From the first end to the last end of the cutter head 2, the connecting seat 9 is provided with a first sliding groove 305, and the first pin 10 is slidably disposed in the first sliding groove 305 and connected to the first movable block 302.

[0039] In this embodiment, a first sliding groove 305 is provided on the connecting seat 9 in a front-to-back direction. A first pin 10 is provided in the first sliding groove 305 for connecting the first movable block 302 and the connecting seat 9. The function of the first sliding groove 305 is to allow space for the first movable block 302. When the linkage rod 6 moves forward, the orientation reference... Figure 3 and Figure 4Left is front, right is back, and the first movable block 302 is pushed to rotate clockwise around the connecting seat 9. The first movable block 302 is connected to the first pin 10 and slides forward in the first slide groove 305. The first fixed seat 301 rotates clockwise relative to the first movable block 302. Since the first movable block 302 is displaced forward in the first slide groove 305 through the first pin 10, the movement path of the first fixed seat 301 becomes controllable. That is, when the first movable block 302 rotates clockwise and displaces forward through the first slide groove 305, it can apply a downward force to the first fixed seat 301, thereby changing the movement mode of the first fixed seat 301 to up and down. The movement path of the first movable block 302 in the first slide groove 305 is equal to the downward movement path of the first fixed seat 301 relative to the first movable block 302. This design is to improve the stability of the cutter head 2 during adjustment, so that the cutter head 2 can only move up and down during the adjustment process, thereby improving the accuracy and stability of the adjustment.

[0040] The linkage 6 is set at an angle.

[0041] In this embodiment, the linkage 6 is set to an inclined position, and an orientation reference is set. Figure 5 The high end of the linkage rod 6 is connected to the second movable block 402, and the low end of the linkage rod 6 is connected to the first movable block 302. The purpose of this design is to refer to... Figures 4-5 When the second movable block 402 rotates clockwise, the second fixed seat 401, which is rotatably connected to the second movable block 402, causes the end of the cutter head 2 to move downward, thereby causing the linkage rod 6, which is rotatably connected to the second movable block 402, to move forward and, in conjunction with the first movable block 302, to rotate clockwise relative to the connecting seat 9. The first fixed seat 301, which is rotatably connected to the first movable block 302, causes the head of the cutter head 2 to move downward. Conversely, when the second movable block 402 rotates counterclockwise, the second fixed seat 401, which is rotatably connected to the second movable block 402, causes the end of the cutter head 2 to rise, thereby causing the linkage rod 6, which is rotatably connected to the second movable block 402, to move backward and push the first movable block 302 to rotate counterclockwise relative to the connecting seat 9. The first fixed seat 301, which is rotatably connected to the first movable block 302, causes the head of the cutter head 2 to rise. This improves the consistency and stability of the cutter head 2 when raising and lowering it.

[0042] The second movable block 402 has a third hinge point 403 and a fixed mounting point 404 spaced apart. The second fixed seat 401 is located at the third hinge point 403, and the connecting rod 5 is located at the fixed mounting point 404.

[0043] In this embodiment, the second movable block 402 is provided with a third hinge point 403 and a fixed mounting point 404 spaced apart. The second fixed seat 401 is rotatably connected to the second movable block 402 through the third hinge point 403. The connecting rod 5 is fixedly connected to another second movable block 402 through the fixed mounting point 404, so that the second movable block 402 can rotate forward and backward under the drive of the gear block. When the gear block moves forward, the second movable block 402 rotates counterclockwise relative to the second fixed seat 401, and the second fixed seat 401 drives the end of the cutter disc 2 to move downward. The other second movable block 402 rotates clockwise relative to the other second fixed seat 401 through the drive of the connecting rod 5, and the second fixed seat 401 drives the end of the cutter disc 2 to move downward. Through the mirror-image second movable block 402 and the second fixed seat 401, the cutter disc 2 is raised and lowered synchronously with the cooperation of the connecting rod 5, so as to improve the stability of the cutter disc 2 during adjustment.

[0044] The second movable block 402 is provided with a second slide groove 405 along the vertical direction, and the second pin 11 is slidably disposed in the second slide groove 405 and connected to the second fixed seat 401.

[0045] In this embodiment, the second movable block 402 is provided with a second slide groove 405 arranged vertically. A second pin 11 is provided in the second slide groove 405 for connecting the second movable block 402 and the second fixed seat 401. The function of the second slide groove 405 is to allow the second movable block 402 to move. When the second movable block 402 rotates clockwise, the second movable block 402 moves upward in the second slide groove 405 through the second pin 11, thereby guiding the movement path of the second fixed seat 401. That is, when the second movable block 402 rotates clockwise, it passes through the second slide groove. When 405 moves upward, it can apply an upward lifting force to the second fixed seat 401, so that the moving path of the second fixed seat 401 is equal to the moving path of the second movable block 402 in the second slide groove 405, changing the moving mode of the second fixed seat 401 to move up and down. This design is for the stability when raising or lowering the cutter head 2. When used in conjunction with the first movable block 302 and the first fixed seat 301, the cutter head 2 can only move up and down during the adjustment process, further improving the accuracy and stability of the adjustment.

[0046] The frame 1 is provided with a gear seat 8. From the first end of the cutter head 2 to its last end, the gear seat 8 forms a plurality of gear slots 801. The gear lever 7 can be selectively inserted into any one of the gear slots 801.

[0047] In this embodiment, in order to facilitate the adjustment of the lifting height of the cutter head 2, a gear seat 8 is provided on the frame 1. The gear seat 8 has a plurality of gear slots 801 arranged in the front and back direction. The gear lever 7 can move forward or backward into any gear slot 801 to change the rotation direction of the first linkage component 3 and the second linkage component 4, thereby realizing the lifting of the cutter head 2.

[0048] The gear lever 7 is connected to the frame 1 by a torsion spring 12.

[0049] In this embodiment, a torsion spring 12 is provided between the gear lever 7 and the frame 1. When the gear lever 7 is located in any gear slot 801, the torsion spring 12 limits the gear lever 7 to prevent it from disengaging from the gear slot 801. Under the action of the torsion spring 12, when the gear lever 7 moves forward or backward, the torsion spring 12 returns to its original position after deformation, which can lock the gear lever 7 in any gear slot 801, preventing the gear lever 7 from disengaging from the gear slot 801 after movement.

[0050] Example 2

[0051] This embodiment also provides a lawnmower, which includes a frame 1. The frame 1 is connected to the adjustment mechanism of the blade disc 2. The frame 1 adopts a three-point connection with the blade disc 2, which improves the stability of the blade disc 2 when adjusting its height. At the same time, since this lawnmower uses the above-mentioned adjustment mechanism of the blade disc 2, the blade disc 2 can only be adjusted vertically when adjusting its height, making the adjustment of the blade disc 2 more stable. This avoids the cutting blades inside the blade disc 2 scraping against the inner wall of the blade disc 2 due to excessive adjustment. On the other hand, the gear position seat 8 of the blade disc 2 is set on the frame 1. The gear position seat 8 is provided with multiple spaced gear position slots 801. The gear position slots 801 are provided with scale lines (not shown) to facilitate quick and accurate adjustment of the height of the blade disc 2. This design ensures that the blade disc 2 remains horizontal at all times, whether during operation or adjustment, and the height adjustment of the blade disc 2 is accurate and stable.

[0052] Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention and are not intended to limit it. Although the present invention has been described in detail with reference to preferred embodiments, those skilled in the art should understand that modifications or equivalent substitutions can be made to the technical solutions of the present invention without departing from the spirit and scope of the technical solutions of the present invention, and all such modifications or substitutions should be covered within the scope of the claims of the present invention.

Claims

1. A cutter head adjustment mechanism for adjusting the height of the cutter head, the cutter head having a head end and an end end, characterized in that, The adjustment mechanism includes: The first linkage component includes a first fixed seat disposed at the head end of the cutter head, and a first movable block rotatably disposed on the first fixed seat, wherein the end of the first movable block away from the first fixed seat is movably engaged with the vehicle frame. Two second linkage components are mirror-image disposed at the end of the cutter head. Each second linkage component includes a second fixed seat fixed to the cutter head and a second movable block rotatably disposed on the second fixed seat. The two second movable blocks are connected by a connecting rod, and one of the second movable blocks is movably equipped with a stop lever, so as to drive the stop lever to move back and forth along the head end and the tail end of the cutter head under the action of external force, so that the stop lever moves downward or upward through the second movable block in linkage with the tail end of the cutter head; and A linkage rod connects the first movable block and another second movable block to drive the linkage rod to push the first movable block to rotate in both directions. When the first movable block rotates in reverse, the first fixed seat rotates relative to the first movable block, causing the head end of the cutter head to move downward. When the second movable block rotates in the forward direction, the first fixed seat rotates relative to the first movable block, causing the head end of the cutter head to move upward. The first movable block has a first hinge point and a second hinge point that are spaced apart. The first fixed seat is located at the first hinge point, and the vehicle frame is located at the second hinge point. The frame extends downward to form a connecting seat, which is located at the second hinge point; From the first end to the last end of the cutter head, the connecting seat is provided with a first sliding groove, a first pin is slidably disposed in the first sliding groove, and is connected to the first movable block; The second movable block has a third hinge point and a fixed mounting point spaced apart, the second fixed seat is located at the third hinge point, and the connecting rod is located at the fixed mounting point; The second movable block is provided with a second sliding groove along the vertical direction, and the second pin is slidably disposed in the second sliding groove and connected to the second fixed seat; The frame is provided with a gear position seat, and from the first end of the cutter head to its last end, the gear position seat forms a plurality of gear position slots, and the gear position lever can be selectively inserted into any one of the gear position slots.

2. The tool disc adjustment mechanism as described in claim 1, characterized in that, The linkage is set at an angle.

3. The tool disc adjustment mechanism as described in claim 2, characterized in that, The gear lever is connected to the vehicle frame via a torsion spring.

4. A lawnmower, comprising an adjustment mechanism for the blade disc as described in any one of claims 1-3.

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