Mower cutter anti-deviation mechanism

Abstract

The utility model relates to the technical field of agricultural machinery, in particular to a mower cutter anti-deviation mechanism which comprises a support, a supporting shaft, a swing arm, a fixing plate, a rotating disc, an eccentric shaft, a crank connecting rod, a connecting plate, a supporting plate, a fixed cutter and a movable cutter. The mower cutter anti-deviation mechanism has the beneficial effects that the mower cutter anti-deviation mechanism can convert semi-arc swinging motion of a moving cutter of a mower into linear motion under the action of the anti-deviation assembly, so that the moving cutter is prevented from being driven by the swing arm, and the moving cutter is prevented from moving along with the swing arm. The problem of up-down and left-right change during movement is solved, so that stable linear movement can be kept, the durability of the movable cutter head is improved, and the replacement frequency of the quick-wear part is reduced.

Description

A lawnmower blade anti-deviation mechanism Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to a lawnmower blade anti-deviation mechanism. Background Technology

[0002] Agricultural lawnmowers are agricultural machines specifically designed for treating large areas of weeds, and they are widely used in agriculture, forestry, and other fields.

[0003] Most existing lawnmowers consist of a blade head, front blade, large grinding disc, front pressure plate, rear pressure plate, wooden connecting rod, and swivel blade. During use, the coordination of these components cuts the grass on the land that needs to be cleared.

[0004] Chinese utility model patent application number 202321578215.2 discloses a lawnmower, including a frame, a bracket mounted on the frame, and a second support shaft fixedly connected to the bracket. A swing arm is sleeved on the second support shaft. A drive assembly for driving the swing arm to swing back and forth around the second support shaft is also installed on the bracket. A fixed blade is fixedly installed on the bracket. A connecting assembly is provided between the bracket and the fixed blade. A movable blade is slidably fitted on the fixed blade. The movable blade is hinged to the end of the swing arm.

[0005] The moving blade of the existing lawnmower, driven by the swing arm, will move up, down, left, and right during movement, and cannot maintain a stable linear motion. This reduces the durability of the moving blade head and leads to a high replacement frequency of this vulnerable part. Therefore, a lawnmower blade anti-deviation mechanism is proposed. Summary of the Invention

[0006] To overcome the technical deficiencies in the prior art and effectively solve the technical problems in the background art, this utility model provides the following technical solution:

[0007] A lawnmower blade anti-deviation mechanism includes a bracket, a support shaft, a swing arm, a fixed plate, a rotating disk, an eccentric shaft, a crank connecting rod, a connecting plate, a support plate, a fixed blade, and a moving blade. A connecting block is fixedly installed on the rear side of the upper surface of the moving blade, and the connecting block is rotatably connected to the lower part of the swing arm through an anti-deviation component.

[0008] As a preferred technical solution of this utility model, the anti-deviation component consists of a connecting shaft, a rotating wheel, a rotating shaft, and a connecting bearing. One end of the connecting shaft is rotatably connected to one side of the connecting block, and the other end of the connecting shaft is rotatably connected to one side edge of the rotating wheel. A rotating shaft is fixedly installed at the center of the other side of the rotating wheel. The rotating shaft is rotatably connected to the lower part of the swing arm through the connecting bearing. Two conical pads are provided at both ends of the connecting shaft.

[0009] As a preferred technical solution of this utility model, the anti-deviation component consists of a connecting shaft and an eccentric bearing. One end of the connecting shaft is rotatably connected to one side of the connecting block through the eccentric bearing, and the other end of the connecting shaft is rotatably connected to the lower part of the swing arm.

[0010] As a preferred technical solution of this utility model, the support shaft is fixedly connected to the bracket, a swing arm is sleeved on the support shaft, and a crank connecting rod for driving the swing arm to swing back and forth around the support shaft is also installed on the bracket. The crank connecting rod is connected to an external driving mechanism through a rotating disk and an eccentric shaft. The rotating disk and the eccentric shaft are rotatably mounted on the bracket through a fixed plate.

[0011] In a preferred embodiment of this utility model, a fixed blade and a movable blade are fixedly mounted on the bracket. A support plate for abutting against the ground is installed between the bracket and the fixed blade via a connecting plate. The fixed blade is fixedly connected to the support plate, and the movable blade is slidably mounted on the support plate.

[0012] Compared with the prior art, the beneficial effects of this utility model are as follows: This lawnmower blade anti-deviation mechanism, through the action of the anti-deviation component, can convert the semi-circular swing motion of the lawnmower blade into linear motion, avoiding the problem of up-down and left-right movement of the blade under the drive of the swing arm, so that it can maintain stable linear motion, improve the durability of the blade head, and reduce the replacement frequency of this vulnerable part; specifically, when the rotating disk and eccentric shaft rotate, they will drive the crank connecting rod and one end of the swing arm to perform a semi-circular swing motion, while the other end of the swing arm can only perform linear motion under the action of the anti-deviation component composed of the connecting shaft, rotating wheel, rotating shaft and connecting bearing or the connecting shaft and eccentric bearing. In this way, the semi-circular swing motion is converted into linear motion, thereby driving the blade head to perform linear cutting motion. Attached Figure Description

[0013] Figure 1 is a schematic diagram of the structure of this utility model.

[0014] Figure 2 is a partial structural schematic diagram of Embodiment 1 of this utility model.

[0015] Figure 3 is a partial side view of Embodiment 1 of this utility model.

[0016] Figure 4 is a partial structural schematic diagram of Embodiment 2 of this utility model.

[0017] In the diagram: 1. Bracket; 2. Support shaft; 3. Swing arm; 4. Fixed plate; 5. Rotating disk; 6. Eccentric shaft; 7. Crank connecting rod; 8. Connecting plate; 9. Support plate; 10. Fixed blade; 11. Moving blade; 12. Connecting block; 13. Connecting shaft; 14. Rotating wheel; 15. Rotating shaft; 16. Connecting bearing; 17. Eccentric bearing. Detailed Implementation

[0018] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the scope of protection of the present utility model. Embodiments

[0019] Please refer to Figures 1-3. This embodiment provides a technical solution: a lawnmower blade anti-deviation mechanism, including a bracket 1, a support shaft 2, a swing arm 3, a fixed plate 4, a rotating disk 5, an eccentric shaft 6, a crank connecting rod 7, a connecting plate 8, a support plate 9, a fixed blade 10, and a moving blade 11. A connecting block 12 is fixedly installed on the rear side of the upper surface of the moving blade 11. The connecting block 12 is rotatably connected to the lower part of the swing arm 3 through an anti-deviation component.

[0020] Furthermore, as shown in Figures 2 and 3, the anti-deviation assembly consists of a connecting shaft 13, a rotating wheel 14, a rotating shaft 15, and a connecting bearing 16. One end of the connecting shaft 13 is rotatably connected to one side of the connecting block 12, and the other end of the connecting shaft 13 is rotatably connected to one side edge of the rotating wheel 14. The rotating shaft 15 is fixedly installed at the center of the other side of the rotating wheel 14. The rotating shaft 15 is rotatably connected to the lower part of the swing arm 3 through the connecting bearing 16. Two conical pads are provided at both ends of the connecting shaft 13. Specifically, during use, when the rotating disk 5 and the eccentric shaft 6 rotate, they will drive the crank connecting rod 7 and the swing arm 3. One end of the swing arm 3 makes a semi-circular swing motion, while the other end of the swing arm 3 can only make a linear motion under the action of the anti-deviation assembly composed of the connecting shaft 13, rotating wheel 14, rotating shaft 15 and connecting bearing 16. In this way, the semi-circular swing motion is converted into linear motion, which in turn drives the blade 11 to make a linear cutting motion. This converts the semi-circular swing motion of the lawnmower's blade 11 into linear motion, avoiding the problem of the blade 11 moving up, down, left and right under the drive of the swing arm. It can maintain a stable linear motion, improve the durability of the blade 11, and reduce the replacement frequency of this vulnerable part.

[0021] Furthermore, as shown in Figure 1, the support shaft 2 is fixedly connected to the bracket 1, and the support shaft 2 is fitted with a swing arm 3. The bracket 1 is also equipped with a crank connecting rod 7 for driving the swing arm 3 to swing back and forth around the support shaft 2. The crank connecting rod 7 is connected to the external drive mechanism through the rotating disk 5 and the eccentric shaft 6. The rotating disk 5 and the eccentric shaft 6 are rotatably mounted on the bracket 1 through the fixing plate 4.

[0022] Furthermore, as shown in Figure 1, a fixed blade 10 and a movable blade 11 are fixedly installed on the bracket 1. A support plate 9 for abutting against the ground is installed between the bracket 1 and the fixed blade 10 through a connecting plate 8. The fixed blade 10 is fixedly connected to the support plate 9, and the movable blade 11 is slidably disposed on the support plate 9.

[0023] Specifically, a swing arm 3, which swings around a support shaft 2, is mounted on a bracket 1. In use, an external drive mechanism drives the swing arm 3 to reciprocate around the support shaft 2 via a rotating disk 5, an eccentric shaft 6, and a crank connecting rod 7. During this reciprocating motion, the swing arm 3 drives the moving blade 11 on it to move reciprocally along its length, thus mowing the land that needs to be cleared. The principle is a well-established technology and will not be described in detail here. Example

[0024] Please refer to Figure 4. This embodiment is identical to Embodiment 1 in all other aspects, except that the anti-deviation component is replaced by a connecting shaft 13 and an eccentric bearing 17. One end of the connecting shaft 13 is rotatably connected to one side of the connecting block 12 via the eccentric bearing 17, and the other end of the connecting shaft 13 is rotatably connected to the lower part of the swing arm 3. Specifically, in use, when the rotating disk 5 and the eccentric shaft 6 rotate, they drive the crank connecting rod 7 and one end of the swing arm 3 to perform a semi-circular swing motion. Under the action of the anti-deviation component composed of the connecting shaft 13 and the eccentric bearing 17, the other end of the swing arm 3 can only perform a linear motion. This converts the semi-circular swing motion into a linear motion, thereby driving the blade 11 to perform a linear cutting motion. This converts the semi-circular swing motion of the lawnmower's blade 11 into a linear motion, avoiding the problem of the blade 11 shifting up, down, left, and right under the swing arm's influence, ensuring stable linear motion, improving the durability of the blade 11, and reducing the replacement frequency of this vulnerable part.

[0025] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. A lawnmower blade anti-deviation mechanism, comprising a bracket (1), a support shaft (2), a swing arm (3), a fixed plate (4), a rotating disk (5), an eccentric shaft (6), a crank connecting rod (7), a connecting plate (8), a support plate (9), a fixed blade (10), and a moving blade (11), characterized in that: A connecting block (12) is fixedly installed on the rear side of the upper surface of the moving blade (11). The connecting block (12) is rotatably connected to the lower part of the swing arm (3) through an anti-offset assembly. The anti-offset assembly consists of a connecting shaft (13), a rotating wheel (14), a rotating shaft (15), and a connecting bearing (16). One end of the connecting shaft (13) is rotatably connected to one side of the connecting block (12), and the other end of the connecting shaft (13) is rotatably connected to one side edge of the rotating wheel (14). A rotating shaft (15) is fixedly installed at the center of the other side of the rotating wheel (14). The rotating shaft (15) is rotatably connected to the lower part of the swing arm (3) through the connecting bearing (16). Two conical pads are provided at both ends of the connecting shaft (13).

2. The lawnmower blade anti-deviation mechanism according to claim 1, characterized in that: The anti-deviation assembly consists of a connecting shaft (13) and an eccentric bearing (17). One end of the connecting shaft (13) is rotatably connected to one side of the connecting block (12) via the eccentric bearing (17), and the other end of the connecting shaft (13) is rotatably connected to the lower part of the swing arm (3).

3. The lawnmower blade anti-deviation mechanism according to claim 1, characterized in that: The support shaft (2) is fixedly connected to the bracket (1). A swing arm (3) is sleeved on the support shaft (2). A crank connecting rod (7) for driving the swing arm (3) to swing back and forth around the support shaft (2) is also installed on the bracket (1). The crank connecting rod (7) is connected to the external drive mechanism through the rotating disk (5) and the eccentric shaft (6). The rotating disk (5) and the eccentric shaft (6) are rotatably set on the bracket (1) through the fixing plate (4).

4. The lawnmower blade anti-deviation mechanism according to claim 1, characterized in that: A fixed blade (10) and a movable blade (11) are fixedly installed on the bracket (1). A support plate (9) for abutting against the ground is installed between the bracket (1) and the fixed blade (10) through a connecting plate (8). The fixed blade (10) is fixedly connected to the support plate (9), and the movable blade (11) is slidably disposed on the support plate (9).

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