Blade protection device of mower

Abstract

The utility model discloses a blade protection device of a mowing machine, which comprises a movable frame, and the surface of the movable frame is fixedly connected with a mounting frame. The motor drives the mowing blade and the first gear to rotate, the first gear drives the toothed belt and the second gear to rotate, the second gear drives the first helical tooth and the second helical tooth to rotate, the second helical tooth drives the rotating disc to rotate, the rotating disc drives the transmission pin to rotate, and the transmission pin drives the moving plate to reciprocate towards the front side and the rear side in the rotating process. The moving plate drives the shaking plate and the comb tooth set to reciprocate towards the front side and the rear side, due to the fact that the diameter of the rotating disc is large and the rotating diameter of the transmission pin is also large, the comb tooth set can move greatly, the comb tooth set can thoroughly push away encountered stones in the large-amplitude moving process, and no stone exists in the moving path of the mowing blade. The lawn mower has the advantage of efficient protection work, the reciprocating movement distance of the comb teeth is large, the comb teeth doing large-amplitude reciprocating movement can be easily pushed away by stones in the lawn, and the working efficiency of the lawn mower is improved.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a blade protection device for lawn mowers. Background Art

[0002] During the operation of the lawn mower, a blade guard is required, and the patent announcement number is CN105144999A, which discloses a blade guard for a lawn mower, a blade expansion prevention device for a lawn mower, the guard is installed on the frame of the lawn mower and is in front of the blade of the lawn mower. The guard includes a push rod, the push rod has a plurality of comb teeth, the comb teeth are arranged at intervals, one end is connected to the push rod, and the other end is not higher than the blade of the lawn mower. The overall shape of the push rod is a broken line with a sharp angle facing the forward direction of the lawn mower. The push rod has a guide shaft and is constrained to reciprocate on the frame of the lawn mower by the guide shaft. The push rod is powered by a drive motor, and the drive motor is connected to the push rod by an eccentric connector to drive the push rod to reciprocate. The present invention can more easily push away hard objects such as stones and branches to prevent the blade from being damaged.

[0003] The above-mentioned prior art solutions have the following defects: the eccentric shaft is used to drive the push rod and the comb teeth to reciprocate, the diameter distance generated by the rotation of the eccentric shaft is small, and the reciprocating distance of the comb teeth is small, resulting in a small movement amplitude of the comb teeth. The comb teeth that reciprocate with a small amplitude are difficult to push away the stones in the grass, and even cause the frame to be blocked by the stones, thereby reducing the working efficiency of the lawn mower. Utility Model Content

[0004] In order to solve the problems raised in the above-mentioned background technology, the purpose of the utility model is to provide a blade guard for a lawn mower, which has the advantage of efficient protection work and solves the problem that the eccentric shaft is used to drive the push rod and the comb teeth to reciprocate, the diameter distance produced by the rotation of the eccentric shaft is small, and the reciprocating distance of the comb teeth is small, resulting in a small movement amplitude of the comb teeth. The comb teeth with a small reciprocating movement are difficult to push away stones in the grass, and even cause the frame to be blocked by stones, thereby reducing the working efficiency of the lawn mower.

[0005] To achieve the above-mentioned purpose, the utility model provides the following technical solutions: a blade guard device of a lawn mower, comprising a movable frame, a mounting frame is fixedly connected to the surface of the movable frame, a motor is fixedly connected to the top of the mounting frame, the output of the motor passes through the bottom of the movable frame, a gear 1 is fixedly connected to the output end of the motor, a toothed belt is sleeved on the surface of the gear 1, a gear 2 is meshed on the left side of the toothed belt, the gear 2 is rotatably connected to the top of the movable frame through a pin shaft, a bevel gear 1 is fixedly connected to the top of the gear 2, a bevel gear 2 is meshed on the left side of the bevel gear 1, a turntable is fixedly connected to the left side of the bevel gear 2, a cleaning mechanism is provided on the left side of the turntable, and a mowing blade is fixedly connected to the output end of the motor.

[0006] As a preferred embodiment of the utility model, the cleaning mechanism includes a transmission pin, the transmission pin is fixedly connected to the top of the left side of the turntable, the surface of the transmission pin is sleeved with a movable plate, the bottom of the movable plate is fixedly connected to a shaking plate, the bottom of the shaking plate is fixedly connected to a comb tooth group, a sliding rod is provided inside the shaking plate, the front and rear sides of the sliding rod are fixedly connected to a fixed frame, and the inner side of the fixed frame is fixedly connected to the surface of the movable frame.

[0007] As a preferred embodiment of the utility model, a stabilizing frame is fixedly connected to the left side of the top of the moving frame, and the surfaces of the gear 1 and the gear 2 are rotatably connected to the inside of the stabilizing frame.

[0008] As a preferred embodiment of the utility model, the left side of the driving pin is fixedly connected to a limiting block, and the surface of the limiting block is in contact with the surface of the moving plate.

[0009] As a preferred embodiment of the utility model, the front side and the rear side of the movable plate are fixedly connected with reinforcement plates, and the surface of the reinforcement plate is fixedly connected to the surface of the shaking plate.

[0010] As a preferred embodiment of the present invention, a reinforcing member is fixedly connected to the inner side of the fixed frame, and a surface of the reinforcing member is fixedly connected to the surface of the movable frame.

[0011] As a preferred embodiment of the utility model, the front side and the rear side of the slide bar surface are both slidably connected with a slider, and the bottom of the slider is fixedly connected to the top of the shaking plate.

[0012] Compared with the prior art, the beneficial effects of the utility model are as follows:

[0013] 1. The utility model drives the mowing blade and gear 1 to rotate through a motor, gear 1 drives the toothed belt and gear 2 to rotate, gear 2 drives the bevel gear 1 and bevel gear 2 to rotate, bevel gear 2 drives the turntable to rotate, the turntable drives the transmission pin to rotate, and the process of the transmission pin rotating drives the moving plate to reciprocate toward the front and rear sides, the moving plate drives the shaking plate and the comb tooth group to reciprocate toward the front and rear sides. Since the diameter of the turntable is large and the rotation diameter of the transmission pin is also large, the comb tooth group can move greatly, and the stones encountered in the process of the large-scale movement of the comb tooth group will be completely pushed away, so that there are no stones in the path of the mowing blade, and the utility model has the advantage of efficient protection work, the reciprocating movement distance of the comb teeth is large, and the comb teeth that reciprocate greatly can easily push away the stones in the grass, thereby improving the working efficiency of the lawn mower.

[0014] 2. The utility model is provided with a cleaning mechanism, which can clean the stones on the path of the mowing blade, thereby preventing the mowing blade from hitting the stones during rotation, thereby improving the safety of the mowing blade. BRIEF DESCRIPTION OF THE DRAWINGS

[0015] Figure 1 It is a schematic diagram of the structure of the utility model;

[0016] Figure 2 It is a three-dimensional diagram of the mounting frame of the utility model;

[0017] Figure 3 It is a three-dimensional diagram of the mowing blade of the utility model;

[0018] Figure 4 For this utility model Figure 3 Enlarged structural diagram at point A in the middle.

[0019] In the figure: 1. moving frame; 2. mounting frame; 3. motor; 4. gear 1; 5. toothed belt; 6. gear 2; 7. bevel gear 1; 8. bevel gear 2; 9. turntable; 10. cleaning mechanism; 101. transmission pin; 102. moving plate; 103. shaking plate; 104. comb tooth group; 105. slide bar; 106. fixed frame; 11. mowing blade; 12. stabilizing frame; 13. limit block; 14. reinforcement plate; 15. reinforcement piece; 16. slider. DETAILED DESCRIPTION

[0020] The following will be combined with the drawings in the embodiments of the utility model to clearly and completely describe the technical solutions in the embodiments of the utility model. Obviously, the described embodiments are only part of the embodiments of the utility model, not all of the embodiments. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without creative work are within the scope of protection of the utility model.

[0021] like Figures 1 to 4As shown, the utility model provides a blade guard device for a lawn mower, comprising a mobile frame 1, a mounting frame 2 is fixedly connected to the surface of the mobile frame 1, a motor 3 is fixedly connected to the top of the mounting frame 2, the output of the motor 3 runs through the bottom of the mobile frame 1, a gear 1 4 is fixedly connected to the output end of the motor 3, a toothed belt 5 is sleeved on the surface of the gear 1 4, a gear 2 6 is meshed on the left side inside the toothed belt 5, the gear 2 6 is rotatably connected to the top of the mobile frame 1 through a pin shaft, a bevel gear 1 7 is fixedly connected to the top of the gear 2 6, a bevel gear 2 8 is meshed on the left side of the bevel gear 1 7, a turntable 9 is fixedly connected to the left side of the turntable 9, a cleaning mechanism 10 is provided on the left side of the turntable 9, and a mowing blade 11 is fixedly connected to the output end of the motor 3.

[0022] refer to Figure 3 The cleaning mechanism 10 includes a transmission pin 101, which is fixedly connected to the top of the left side of the turntable 9. A moving plate 102 is sleeved on the surface of the transmission pin 101. A shaking plate 103 is fixedly connected to the bottom of the moving plate 102. A comb tooth group 104 is fixedly connected to the bottom of the shaking plate 103. A sliding rod 105 is arranged inside the shaking plate 103. A fixing frame 106 is fixedly connected to the front and rear sides of the sliding rod 105. The inner side of the fixing frame 106 is fixedly connected to the surface of the moving frame 1.

[0023] As a technical optimization solution of the utility model, by providing a cleaning mechanism 10, stones on the path that the mowing blade 11 is about to travel can be cleaned to avoid the mowing blade 11 hitting stones during rotation, thereby improving the safety of the mowing blade 11.

[0024] refer to Figure 3 The left side of the top of the mobile frame 1 is fixedly connected with a stabilizing frame 12, and the surfaces of the gear 1 4 and the gear 2 6 are rotatably connected to the inside of the stabilizing frame 12.

[0025] As a technical optimization solution of the utility model, by setting a stabilizing frame 12, the rotation of gear 1 4 and gear 2 6 can be stabilized to avoid shaking of gear 1 4 and gear 2 6 during rotation and movement, thereby improving the rotation stability of gear 1 4 and gear 2 6.

[0026] refer to Figure 4 The left side of the driving pin 101 is fixedly connected to the limiting block 13 , and the surface of the limiting block 13 contacts the surface of the moving plate 102 .

[0027] As a technical optimization solution of the present invention, by setting a limit block 13, the transmission pin 101 can be limited to avoid the transmission pin 101 from being separated from the moving plate 102 during movement, thereby improving the working stability of the transmission pin 101.

[0028] refer to Figure 3The front and rear sides of the moving plate 102 are fixedly connected with a reinforcing plate 14 , and the surface of the reinforcing plate 14 is fixedly connected to the surface of the shaking plate 103 .

[0029] As a technical optimization solution of the utility model, by setting a reinforcement plate 14, the connection between the movable plate 102 and the shaking plate 103 can be reinforced to avoid breakage of the movable plate 102 and the shaking plate 103 during use, to prevent the movable plate 102 and the shaking plate 103 from being unable to cooperate with each other, and to improve the use effect of the movable plate 102 and the shaking plate 103.

[0030] refer to Figure 3 A reinforcing member 15 is fixedly connected to the inner side of the fixed frame 106 , and a surface of the reinforcing member 15 is fixedly connected to the surface of the movable frame 1 .

[0031] As a technical optimization solution of the utility model, by setting a reinforcement piece 15, the connection between the fixed frame 106 and the mobile frame 1 can be reinforced to avoid breakage of the fixed frame 106 and the mobile frame 1 during use, to prevent the fixed frame 106 and the mobile frame 1 from being unable to cooperate with each other, and to improve the use effect of the fixed frame 106 and the mobile frame 1.

[0032] refer to Figure 3 The front side and the rear side of the surface of the slide bar 105 are both slidably connected with a slider 16 , and the bottom of the slider 16 is fixedly connected to the top of the shaking plate 103 .

[0033] As a technical optimization solution of the utility model, by setting a slider 16, the sliding of the shaking board 103 can be stabilized to avoid shaking of the shaking board 103 during sliding movement, which may cause the shaking board 103 to loosen, thereby improving the sliding stability of the shaking board 103.

[0034] The working principle and use process of the utility model are as follows: when in use, before mowing, start the motor 3, the motor 3 drives the mowing blade 11 and the gear 1 4 to rotate, the gear 1 4 drives the toothed belt 5 and the gear 2 6 to rotate, the gear 2 6 drives the bevel gear 1 7 and the bevel gear 2 8 to rotate, the bevel gear 2 8 drives the turntable 9 to rotate, the turntable 9 drives the transmission pin 101 to rotate, and the rotation process of the transmission pin 101 drives the moving plate 102 to reciprocate to the front and rear sides, the moving plate 102 drives the shaking plate 103 and the comb tooth group 104 to reciprocate to the front and rear sides. Since the diameter of the turntable 9 is large and the rotation diameter of the transmission pin 101 is also large, the comb tooth group 104 can move significantly. In the process of the significant movement of the comb tooth group 104, the stones encountered will be completely pushed away, so that there are no stones in the path of the mowing blade 11, thereby having the advantage of efficient protection work.

[0035] In summary: the blade protection device of the lawn mower, through the coordinated use of the moving frame 1, the mounting frame 2, the motor 3, the gear 1 4, the toothed belt 5, the gear 2 6, the bevel tooth 1 7, the bevel tooth 2 8, the turntable 9, the cleaning mechanism 10 and the mowing blade 11, solves the problem of using the eccentric shaft to drive the push rod and the comb teeth to reciprocate, the diameter distance generated by the rotation of the eccentric shaft is small, the reciprocating distance of the comb teeth is small, resulting in a small movement amplitude of the comb teeth, and the comb teeth with a small reciprocating movement are difficult to push away the stones in the grass, and even cause the frame to be blocked by the stones, thereby reducing the working efficiency of the lawn mower.

[0036] It should be noted that, in this article, relational terms such as first and second, etc. are only used to distinguish one entity or operation from another entity or operation, and do not necessarily require or imply any such actual relationship or order between these entities or operations. Moreover, the terms "include", "comprise" or any other variants thereof are intended to cover non-exclusive inclusion, so that a process, method, article or device including a series of elements includes not only those elements, but also other elements not explicitly listed, or also includes elements inherent to such process, method, article or device.

[0037] Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A blade guard device for a lawn mower, comprising a movable frame (1), characterized in that: The surface of the mobile frame (1) is fixedly connected with a mounting frame (2), the top of the mounting frame (2) is fixedly connected with a motor (3), the output of the motor (3) passes through the bottom of the mobile frame (1), the output end of the motor (3) is fixedly connected with a gear 1 (4), the surface of the gear 1 (4) is sleeved with a toothed belt (5), the left side of the inside of the toothed belt (5) is meshed with a gear 2 (6), the gear 2 (6) is rotatably connected to the top of the mobile frame (1) through a pin shaft, the top of the gear 2 (6) is fixedly connected with a bevel gear 1 (7), the left side of the bevel gear 1 (7) is meshed with a bevel gear 2 (8), the left side of the bevel gear 2 (8) is fixedly connected with a turntable (9), the left side of the turntable (9) is provided with a cleaning mechanism (10), and the output end of the motor (3) is fixedly connected with a mowing blade (11).

2. A blade guard for a lawn mower according to claim 1, characterized in that: The cleaning mechanism (10) comprises a transmission pin (101), the transmission pin (101) is fixedly connected to the top of the left side of the rotating disk (9), a movable plate (102) is sleeved on the surface of the transmission pin (101), a shaking plate (103) is fixedly connected to the bottom of the movable plate (102), a comb tooth group (104) is fixedly connected to the bottom of the shaking plate (103), a sliding rod (105) is arranged inside the shaking plate (103), the front side and the rear side of the sliding rod (105) are fixedly connected to a fixing frame (106), and the inner side of the fixing frame (106) is fixedly connected to the surface of the movable frame (1).

3. The blade guard device of a lawn mower according to claim 1, characterized in that: The left side of the top of the moving frame (1) is fixedly connected to a stabilizing frame (12), and the surfaces of the gear 1 (4) and the gear 2 (6) are rotatably connected to the inside of the stabilizing frame (12).

4. A blade guard for a lawn mower according to claim 2, characterized in that: The left side of the driving pin (101) is fixedly connected to a limiting block (13), and the surface of the limiting block (13) is in contact with the surface of the moving plate (102).

5. The blade guard device of a lawn mower according to claim 2, characterized in that: The front side and the rear side of the movable plate (102) are both fixedly connected with a reinforcing plate (14), and the surface of the reinforcing plate (14) is fixedly connected to the surface of the shaking plate (103).

6. The blade guard device of a lawn mower according to claim 2, characterized in that: A reinforcing member (15) is fixedly connected to the inner side of the fixed frame (106), and a surface of the reinforcing member (15) is fixedly connected to the surface of the movable frame (1).

7. The blade guard of a lawn mower according to claim 2, characterized in that: The front side and the rear side of the surface of the slide bar (105) are both slidably connected with a slide block (16), and the bottom of the slide block (16) is fixedly connected to the top of the shaking plate (103).

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