Rotary knife guard structure for high-speed brush cutter

Abstract

This utility model relates to the field of brush cutter technology and provides a protective structure for a rotating blade of a high-speed brush cutter, including a handle with a baffle fixedly connected to one end. In this utility model, pulling the pull plate upward causes the locking rod and the pull rod to rise, separating the pull rod from the locking groove. At this time, the fixed rod loses its fixation. Then, pushing the pull plate causes the pull plate to move the pull rod, which in turn causes the fixed rod to slide along the trajectory of the first sliding groove. When the fixed rod slides to the other end, the telescopic rod is fully extended. Releasing the pull plate causes the spring to rebound, causing the pull rod to move downward. The pull rod then causes the pull plate to move downward, and the pull plate causes the locking rod to insert into the locking groove. At this time, the position of the fixed rod is fixed again. Since the length of the telescopic rod and the support plate is greater than the maximum range of the rotating blade body, when cutting brush near walls or trees, the baffle contacts the tree or wall, thus preventing the rotating blade body from being damaged by collision when personnel are cutting brush, thereby achieving protection for the rotating blade body.

Description

Technical Field

[0001] This utility model relates to the field of brush cutter technology, and in particular to a rotating blade protection structure for a high-speed brush cutter. Background Technology

[0002] A brush cutter's rotating blade guard is a safety device installed around the blade. It is usually made of metal or high-strength plastic and its main function is to prevent the blade from breaking and splashing, to block flying debris and weeds during cutting, and to prevent personnel from accidentally touching the high-speed rotating blade.

[0003] As disclosed in CN217160459U, this utility model discloses a rotating blade protection structure for a garden brush cutter. The structure includes a fixed sleeve that is fitted and fixed to a hand handle. A protective baffle is provided on the fixed sleeve. An adjustment mechanism is fixedly connected to the lower part of the fixed sleeve via a connecting rod. A protective component is movably connected to the front of the adjustment mechanism. The protective component includes a connecting frame, a ground support rod, and a horn-shaped part. The upper end of the connecting frame is movably disposed within the adjustment mechanism, and the lower end of the connecting frame is fixedly connected to the ground support rod. The end of the ground support rod furthest from the connecting frame is bent upwards and has a horn-shaped part. This utility model effectively prevents the rotating blade from contacting the ground through the protective component, providing effective protection for the rotating blade. The adjustment mechanism also allows for adjustment of the distance between the protective component and the rotating blade, thereby assisting brush cutters in cutting grass of different heights.

[0004] In existing technologies, by preventing the rotating blade of the brush cutter from contacting the ground, damage to the rotating blade during brush cutting can be avoided, thus providing effective protection for the rotating blade. However, during brush cutting, weeds accumulate on the connecting frame. The more weeds are cut, the more weeds accumulate, forcing operators to frequently lift the equipment to shake and clear them. This repetitive operation not only increases the labor intensity of the operators but also affects work efficiency, causing frequent interruptions to the brush cutting operation and reducing overall work efficiency. Furthermore, when cutting weeds along walls or tree edges, the blades are prone to contact with the walls or tree edges, leading to blade damage. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the prior art where, during the brush cutting process, weeds accumulate on the connecting frame. The more weeds are cut, the more weeds accumulate, forcing operators to frequently lift the equipment to shake them off and clear them. This repetitive operation not only increases the labor intensity of the operators but also affects work efficiency, causing frequent interruptions to the brush cutting process and reducing overall work efficiency. Secondly, when cutting brush weeds along walls or tree edges, the blades are prone to contact with the walls or tree edges, leading to blade damage.

[0006] To achieve the above objectives, the present invention adopts the following technical solution: a rotating blade protective body structure for a high-speed brush cutter, comprising a handle, a baffle fixedly connected to one end of the handle, a connector fixedly connected to one end of the handle at the baffle, a turntable rotatably connected to the bottom end of the connector, a rotating blade body fixedly connected to the outer wall of the turntable in a ring array, a support and cleaning component provided at the bottom end of the baffle, and a protective component provided at the top end of the baffle.

[0007] In a preferred embodiment, the protective component includes a support plate fixed to the middle of the top of the baffle. A first sliding groove is formed in the middle of the top of the support plate, and slots are formed on both sides of the first sliding groove. A telescopic rod is slidably connected to the middle of the support plate, one end of the telescopic rod passes through the support plate, and a stop plate is fixedly connected to one end of the telescopic rod.

[0008] In a preferred embodiment, a fixed rod is fixedly connected to the top end of the telescopic rod away from the abutment plate, the slot is slidably connected to the first sliding groove, a spring is fixedly connected to the bottom end inside the fixed rod, a limit plate is fixedly connected to the top end of the spring, a pull rod is fixedly connected to the top end of the limit plate, and the pull rod slides through the fixed rod.

[0009] In a preferred embodiment, a pull plate is fixedly connected to the top of the pull rod, and locking rods are fixedly connected to both sides of the bottom end of the pull plate, with the locking rods engaging with the locking grooves.

[0010] In a preferred embodiment, the support cleaning assembly includes a support frame, which is fixed to the middle of the bottom end of the baffle. A fixing plate is fixedly connected to the middle of the support frame at the end away from the baffle, and support wheels are fixedly connected to both sides of the support frame at the end near the fixing plate.

[0011] In a preferred embodiment, a connecting shaft is rotatably connected to the top of the fixed plate, the top of the connecting shaft is rotatably connected to the turntable, and cleaning blades are fixedly connected to both sides of the connecting shaft.

[0012] The beneficial effects of this utility model are as follows:

[0013] In this invention, pulling the pull plate upward causes the locking rod and pull rod to rise, separating the pull rod from the slot. At this point, the fixing rod loses its fixation. Then, pushing the pull plate causes it to move the pull rod, which in turn causes the fixing rod to slide along the trajectory of the first sliding groove. When the fixing rod slides to the other end, the telescopic rod extends fully. Releasing the pull plate causes the spring to rebound, causing the pull rod to move downward. The pull rod then causes the pull plate to move downward, and the pull plate causes the locking rod to insert into the slot. At this point, the position of the fixing rod is fixed again. Since the length of the telescopic rod and the support plate is greater than the maximum range of the rotating blade body, when cutting weeds near walls or trees, the support plate contacts the tree or wall, thus preventing the rotating blade body from being damaged by collisions during personnel cutting weeds, thereby protecting the rotating blade body.

[0014] By setting up support wheels, it is easier for personnel to push the device during brush cutting, thereby reducing the strain caused by prolonged holding. When the turntable rotates, it can drive the connecting shaft to rotate, which in turn drives the cleaning blades to rotate. The cleaning blades sweep the weeds accumulated on the support frame, avoiding the need for personnel to frequently lift the equipment to shake it off and clean it, thus reducing labor intensity. Attached Figure Description

[0015] Figure 1 A schematic diagram of the structure of a rotating blade protection body for a high-speed brush cutter provided by this utility model;

[0016] Figure 2 A schematic diagram of the bottom structure of a rotating blade protection body structure for a high-speed brush cutter provided by this utility model;

[0017] Figure 3 A schematic diagram of the left side of a rotating blade protection body structure for a high-speed brush cutter provided by this utility model;

[0018] Figure 4 A schematic diagram of the support and cleaning component structure of a rotating blade protective body structure for a high-speed brush cutter provided by this utility model;

[0019] Figure 5 A schematic diagram of the protective component structure of a rotating blade protective body structure for a high-speed brush cutter provided by this utility model;

[0020] Figure 6 This utility model provides a rotating blade protection structure for a high-speed brush cutter. Figure 3 A schematic diagram of a local structure.

[0021] Legend:

[0022] 1. Hand lever; 11. Baffle; 12. Connector; 13. Turntable; 14. Rotary blade body; 21. Support frame; 22. Fixing plate; 23. Support wheel; 24. Connecting shaft; 25. Cleaning blade; 31. Support plate; 32. First slide groove; 33. Slot; 34. Telescopic rod; 35. Support plate; 36. Fixing rod; 37. Spring; 38. Limiting plate; 39. Pull rod; 310. Pull plate; 311. Locking rod. Detailed Implementation

[0023] 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 protection scope of the present utility model.

[0024] Please see Figures 1-3 This utility model provides a technical solution: a rotating blade protective body structure for a high-speed brush cutter, including a handle 1, a baffle 11 fixedly connected to one end of the handle 1, a connector 12 fixedly connected to one end of the handle 1 at the baffle 11, a turntable 13 rotatably connected to the bottom end of the connector 12, a rotating blade body 14 fixedly connected to the outer wall of the turntable 13 in a ring array, a support and cleaning component provided at the bottom end of the baffle 11, and a protective component provided at the top end of the baffle 11.

[0025] like Figure 5 and Figure 6 As shown, the protective assembly includes a support plate 31, which is fixed to the middle of the top of the baffle 11. A first groove 32 is provided in the middle of the top of the support plate 31. Slots 33 are provided on both sides of the first groove 32. A telescopic rod 34 is slidably connected to the middle of the support plate 31. One end of the telescopic rod 34 passes through the support plate 31 and is fixedly connected to a stop plate 35. A fixing rod 36 is fixedly connected to the top of the telescopic rod 34 away from the stop plate 35. The slots 33 are slidably connected to the first groove 32. A spring 37 is fixedly connected to the bottom of the fixed rod 36. A limit plate 38 is fixedly connected to the top of the spring 37. A pull rod 39 is fixedly connected to the top of the limit plate 38. The pull rod 39 slides through the fixed rod 36. A pull plate 310 is fixedly connected to the top of the pull rod 39. Locking rods 311 are fixedly connected to both sides of the bottom of the pull plate 310 and engage with the slots 33.

[0026] In this embodiment, when it is necessary to clear brush along the wall or tree edge, pull the pull plate 310 upwards. The pull plate 310 causes the locking rod 311 and the pull rod 39 to rise, separating the pull rod 39 from the locking groove 33. At this time, the fixing rod 36 loses its fixation. Then, push the pull plate 310, which causes the pull rod 39 to move. The pull rod 39 causes the fixing rod 36 to slide along the trajectory of the first sliding groove 32. When the fixing rod 36 slides to the other end, the telescopic rod 34 is fully extended, releasing the pull plate 310 and the spring 3... 7. The rebound causes the pull rod 39 to move down, which in turn causes the pull plate 310 to move down. The pull plate 310 causes the locking rod 311 to insert into the slot 33. At this time, the position of the fixing rod 36 is fixed again. At this time, the length of the telescopic rod 34 and the support plate 31 is greater than the maximum range of the rotating blade body 14. Therefore, when cutting weeds near walls or trees, the abutment plate 35 contacts the tree or wall, thereby preventing the rotating blade body 14 from being damaged by collision when personnel are cutting weeds, thus achieving protection for the rotating blade body 14.

[0027] like Figures 1-4 As shown, the support cleaning assembly includes a support frame 21, which is fixed to the middle of the bottom end of the baffle 11. A fixing plate 22 is fixedly connected to the middle of the end of the support frame 21 away from the baffle 11. Support wheels 23 are fixedly connected to both sides of the end of the support frame 21 near the fixing plate 22. A connecting shaft 24 is rotatably connected to the top of the fixing plate 22. The top of the connecting shaft 24 is rotatably connected to the turntable 13. Cleaning blades 25 are fixedly connected to both sides of the connecting shaft 24.

[0028] In this embodiment, the drive structure drives the turntable 13 to rotate, which in turn drives the rotating blade body 14 to rotate. The rotating blade body 14 cuts the weeds. By setting the support wheel 23, it is possible for personnel to push the device to move during brush cutting, thereby reducing the wear and tear caused by prolonged holding. When the turntable 13 rotates, it can drive the connecting shaft 24 to rotate, which in turn drives the cleaning blade 25 to rotate. The cleaning blade 25 sweeps the weeds accumulated on the support frame 21, avoiding the need for personnel to frequently lift the equipment to shake and clean, thus reducing labor intensity.

[0029] Working principle: First, during use, the drive mechanism rotates the turntable 13, which in turn rotates the rotating blade body 14. The rotating blade body 14 cuts weeds. The support wheels 23 help personnel move the device while cutting brush, reducing the strain caused by prolonged holding. When the turntable 13 rotates, it drives the connecting shaft 24 to rotate, which in turn drives the cleaning blades 25 to rotate. The cleaning blades 25 sweep the weeds accumulated on the support frame 21, avoiding frequent lifting and shaking of the equipment, thus reducing labor intensity. When it is necessary to cut brush along walls or trees, the pull plate 310 is pulled upwards. The pull plate 310 causes the locking rod 311 and the pull rod 39 to rise, separating the pull rod 39 from the locking groove 33. At this time, the fixing rod 36 loses its grip. After fixing, push the pull plate 310. The pull plate 310 drives the pull rod 39 to move. The pull rod 39 drives the fixed rod 36 to slide along the trajectory of the first slide groove 32. When the fixed rod 36 slides to the other end, the telescopic rod 34 is fully extended. Release the pull plate 310. The spring 37 rebounds and drives the pull rod 39 to move down. The pull rod 39 drives the pull plate 310 to move down. The pull plate 310 drives the locking rod 311 to insert into the locking groove 33. At this time, the position of the fixed rod 36 is fixed again. At this time, the length of the telescopic rod 34 and the support plate 31 is greater than the maximum range of the rotating blade body 14. Therefore, when cutting weeds by the wall or tree, the abutment plate 35 contacts the tree or wall, thereby avoiding damage to the rotating blade body 14 due to collision when personnel are cutting weeds, thus achieving protection for the rotating blade body 14.

[0030] The above description is merely a preferred embodiment of the present utility model and is not intended to limit the present utility model in any other way. Any person skilled in the art may make changes or modifications to the above-disclosed technical content to create equivalent embodiments for application in other fields. However, any simple modifications, equivalent changes, and modifications made to the above embodiments based on the technical essence of the present utility model without departing from the technical solution of the present utility model shall still fall within the protection scope of the technical solution of the present utility model.

Claims

1. A rotating blade protection structure for a high-speed brush cutter, comprising a handle (1), characterized in that: One end of the handle (1) is fixedly connected to a baffle (11), and the end of the handle (1) located on the baffle (11) is fixedly connected to a connector (12). The bottom end of the connector (12) is rotatably connected to a turntable (13). The outer wall of the turntable (13) is fixedly connected to a rotating blade body (14) in a ring array. The bottom end of the baffle (11) is provided with a support cleaning component, and the top end of the baffle (11) is provided with a protective component.

2. The rotating blade protection structure for a high-speed brush cutter according to claim 1, characterized in that: The protective assembly includes a support plate (31), which is fixed to the middle of the top of the baffle (11). A first groove (32) is provided in the middle of the top of the support plate (31). Slots (33) are provided on both sides of the first groove (32) on the support plate (31). A telescopic rod (34) is slidably connected to the middle of the support plate (31). One end of the telescopic rod (34) passes through the support plate (31). A stop plate (35) is fixedly connected to one end of the telescopic rod (34).

3. The rotating blade protection structure for a high-speed brush cutter according to claim 2, characterized in that: The top end of the telescopic rod (34) away from the abutment plate (35) is fixedly connected to a fixed rod (36). The slot (33) is slidably connected to the first sliding groove (32). The bottom end of the fixed rod (36) is fixedly connected to a spring (37). The top end of the spring (37) is fixedly connected to a limiting plate (38). The top end of the limiting plate (38) is fixedly connected to a pull rod (39). The pull rod (39) slides through the fixed rod (36).

4. The rotating blade protection structure for a high-speed brush cutter according to claim 3, characterized in that: The top of the pull rod (39) is fixedly connected to a pull plate (310), and the two sides of the bottom end of the pull plate (310) are fixedly connected to a locking rod (311), which engages with the locking groove (33).

5. The rotating blade protection structure for a high-speed brush cutter according to claim 1, characterized in that: The support cleaning assembly includes a support frame (21), which is fixed to the middle of the bottom end of the baffle (11). A fixing plate (22) is fixedly connected to the middle of the end of the support frame (21) away from the baffle (11). Support wheels (23) are fixedly connected to both sides of the end of the support frame (21) close to the fixing plate (22).

6. The rotating blade protection structure for a high-speed brush cutter according to claim 5, characterized in that: The top of the fixed plate (22) is rotatably connected to a connecting shaft (24), the top of the connecting shaft (24) is rotatably connected to the turntable (13), and cleaning blades (25) are fixedly connected to both sides of the connecting shaft (24).

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