Cutter head structure of mowing machine

Abstract

The utility model relates to a mowing machine cutter head structure which comprises a cutter head body, the cutter head body comprises a cutter head top wall and a cutter head peripheral wall formed by extending downwards from the edge of the cutter head top wall, and a cutting space is formed by the cutter head top wall and the cutter head peripheral wall; at least one mounting opening is formed in the top wall of the cutter head at intervals, a power driving assembly is arranged in the mounting opening, and a cutting blade is connected to the power driving assembly and located in the cutting space; a grass discharging opening is formed in one side of the peripheral wall of the cutter head, and the axial direction line of the grass discharging opening is located on the tangential direction line of rotation of the cutting blades. The straw discharging device has the effect of improving the straw discharging flow.

Description

Technical Field

[0001] The present application relates to the technical field of lawn mowers, and in particular to a cutter disc structure of a lawn mower. Background Art

[0002] A lawn mower is a mechanical tool commonly used for trimming and maintaining lawns and vegetation. It is mainly used in garden decoration trimming, lawn greening trimming, urban streets, green scenic spots, farmland trimming, and field weeding.

[0003] The current Chinese patent application number 2021101022722 discloses a step-by-step lawn mower, including a functional component, a power component and a shell. The functional component is used to perform cutting work and includes at least two blades. The power component is used to drive the functional component to rotate and includes at least two electrodes. The blades are driven by the electrodes respectively. The shell includes a top wall and a peripheral wall extending downward from the edge of the top wall. The top wall and the peripheral wall form a cutting space for accommodating the functional component. The power component passes through the shell and is rotatably connected to the functional component. The blade forms a rotating plane in the cutting space driven by the motor. A first mowing chamber and a second mowing chamber are formed in the cutting space, and the first grass row port is arranged between the first mowing chamber and the second mowing chamber.

[0004] With respect to the above-mentioned related technologies, the inventor believes that the first grass discharge port is arranged between the first mowing chamber and the second mowing chamber, which results in a limited grass discharge flow rate, and therefore there is room for improvement. Utility Model Content

[0005] In order to increase the flow rate of grass discharge, the present application provides a lawn mower cutter disc structure.

[0006] The present application provides a lawn mower cutter disc structure that adopts the following technical solutions:

[0007] A lawn mower cutter disc structure includes a cutter disc body, wherein the cutter disc body includes a cutter disc top wall and a cutter disc peripheral wall extending downward from an edge of the cutter disc top wall, wherein the cutter disc top wall and the cutter disc peripheral wall form a cutting space;

[0008] At least one mounting opening is provided on the top wall of the cutter disc at intervals, a power drive assembly is provided in the mounting opening, a cutting blade is connected to the power drive assembly, and the cutting blade is located in the cutting space;

[0009] A grass discharge port is formed on one side of the peripheral wall of the cutter disc, and an axial direction line of the grass discharge port is located on a tangential direction line of the rotation of the cutting blade.

[0010] Preferably, a grass discharge baffle covering the grass discharge port is provided on the top wall of the cutter disc.

[0011] Preferably, two of the mounting openings are spaced apart on the top wall of the cutter disc, and the two mounting openings are staggered front to back on the top wall of the cutter disc, and the power drive assembly is provided in each of the mounting openings.

[0012] Preferably, the cutting space is formed with a grass discharge channel extending spirally upward at the plane where each cutting blade is located, and the flow tail ends of the grass discharge channels of two adjacent cutting blades are connected through a connecting channel.

[0013] Preferably, the axial direction line of the grass discharge port is located on the tangential direction line of the rotation of the cutting blade, and is connected to the flow tail end of the grass discharge channel.

[0014] Preferably, the power drive assembly includes a drive housing and a drive motor disposed in an inner cavity of the drive housing, and an output shaft of the drive motor extends into the cutting space and is connected to the cutting blade.

[0015] Preferably, the drive housing includes a mounting base fixedly arranged on the mounting port, and a mounting top seat fixed on the mounting base, a mounting shaft hole for the output shaft of the drive motor to pass through is provided in the middle of the mounting base, a lower heat dissipation flow port is provided around the mounting shaft hole on the mounting base, and an upper heat dissipation flow port is provided on the mounting top seat.

[0016] Preferably, the drive motor is a double-headed drive motor, one of the output shafts of the double-headed drive motor is connected to the cutting blade, and the other output shaft of the double-headed drive motor is connected to a cooling fan.

[0017] Preferably, an upper cover is provided on the mounting top seat, and the upper cover covers the mounting top seat in a semi-enclosed shape, and an inlet air flow passage is formed between the upper cover and the mounting top seat.

[0018] Preferably, a plurality of turbulent columns are provided on the inner wall of the upper cover.

[0019] In summary, this application includes at least one of the following beneficial technical effects:

[0020] In this application, the cutting blade chops the grass in the cutting space, and the axial direction line of the grass discharge port is located on the tangential direction line of the rotation of the cutting blade. The crushed grass will be brought out from the grass discharge port through the rotation of the cutting blade, so that the overall grass discharge flow rate is high, thereby improving the mowing efficiency and avoiding grass jamming. BRIEF DESCRIPTION OF THE DRAWINGS

[0021] Figure 1 It is the first structural diagram of the lawn mower cutter disc structure.

[0022] Figure 2 It is a front view of the lawn mower cutter disc structure.

[0023] Figure 3 It is a second structural diagram of the lawn mower cutter disc structure.

[0024] Figure 4 It is a cross-sectional view of the lawn mower cutter disc structure.

[0025] Figure 5 This is a schematic diagram of the installation of the power drive components.

[0026] Explanation of the reference numerals: 1. Cutter disc body; 101. Cutter disc top wall; 102. Cutter disc peripheral wall; 2. Cutting space; 21. Grass discharge channel; 22. Connecting channel; 3. Power drive assembly; 31. Drive housing; 311. Mounting base; 312. Mounting top seat; 313. Lower heat dissipation flow port; 314. Upper heat dissipation flow port; 32. Drive motor; 33. Cooling fan; 34. Upper cover; 35. Inlet air channel; 36. Turbulence column; 4. Cutting blade; 5. Grass discharge port; 6. Grass discharge baffle. DETAILED DESCRIPTION

[0027] The following is combined with Figure 1-5 This application is described in further detail.

[0028] A lawn mower cutter disc structure, referring to Figure 1 、 Figure 2 and Figure 3 As shown, the cutter disc comprises a main body 1, which includes a cutter disc top wall 101 and a cutter disc peripheral wall 102 extending downward from the edge of the cutter disc top wall 101. The cutter disc top wall 101 and the cutter disc peripheral wall 102 form a cutting space 2. The cutter disc top wall 101 is provided with at least one mounting opening at intervals, and a power drive assembly 3 is provided in the mounting opening. In one embodiment, two mounting openings are provided at intervals on the cutter disc top wall 101, and the two mounting openings are staggered front and back on the cutter disc top wall 101, and a power drive assembly 3 is provided in each mounting opening.

[0029] The power drive assembly 3 is connected to a cutting blade 4, which is located in the cutting space 2. The cutting blade 4 rotates horizontally in the cutting space 2 and performs a mowing action. A grass discharge port 5 is defined on one side of the blade disc peripheral wall 102. The axial direction of the grass discharge port 5 is aligned with the tangential direction of the rotation of the cutting blade 4. A grass discharge baffle 6 is provided on the blade disc top wall 101, covering the grass discharge port 5. The grass discharge baffle 6 is detachably connected to the blade disc top wall 101. In one embodiment, the detachable connection is a snap-fit ​​connection.

[0030] by Figure 1The direction is the reference direction. When the cutting blade 4 rotates clockwise, the grass discharge port 5 is located on the right side of the cutter disc peripheral wall 102, and the axial direction line of the grass discharge port 5 is located on the tangential direction line of the cutting blade 4. When the cutting blade 4 rotates counterclockwise, the grass discharge port 5 is located on the left side of the cutter disc peripheral wall 102, and the axial direction line of the grass discharge port 5 is located on the tangential direction line of the cutting blade 4.

[0031] It is worth noting that the cutting space 2 is formed with a spirally upward-extending grass discharge channel 21 in the plane where each cutting blade 4 is located. The flow tail ends of the grass discharge channels 21 of two adjacent cutting blades 4 are connected by a connecting channel 22. The axial direction line of the grass discharge port 5 is located on the tangential direction line of the rotation of the cutting blades 4 and is connected to the flow tail end of the grass discharge channel 21.

[0032] Therefore, when the cutting blade 4 rotates, the cutting blade 4 will form a flowing wind in the cutting space 2. After the cutting blade 4 chops the grass, the chopped grass will be driven by the flowing wind and discharged from the grass discharge port 5 along the grass discharge channel 21, so that the overall grass discharge flow rate is high, the grass mowing efficiency is high, and the occurrence of grass jamming and the like is avoided.

[0033] Reference Figure 4 and Figure 5 As shown, the power drive assembly 3 includes a drive housing 31 and a drive motor 32 disposed in an inner cavity of the drive housing 31 . The output shaft of the drive motor 32 extends into the cutting space 2 and is connected to the cutting blade 4 .

[0034] The drive housing 31 includes a mounting base 311 fixed on the mounting port, and a mounting top seat 312 fixed on the mounting base 311. The mounting base 311 is fixed to the mounting port by means of bolts, and the mounting top seat 312 is fixed to the mounting base 311 by means of bolts. The outer housing of the drive motor 32 is fixed to the mounting base 311 by means of bolts.

[0035] A mounting shaft hole is provided in the middle of the mounting base 311 for the output shaft of the driving motor 32 to pass through. A lower heat dissipation circulation port 313 is provided around the mounting shaft hole. An upper heat dissipation circulation port 314 is provided on the mounting top seat 312. The driving shell 31 is axially penetrated through the lower heat dissipation circulation port 313 and the upper heat dissipation circulation port 314.

[0036] In one embodiment, the drive motor 32 is a double-headed drive motor 32 , one output shaft of the double-headed drive motor 32 is connected to the cutting blade 4 , and the other output shaft of the double-headed drive motor 32 is connected to the cooling fan 33 .

[0037] Among them, an upper cover 34 is provided on the mounting top seat 312, and the upper cover 34 is connected to the mounting top seat 312 by bolts. The upper cover 34 covers the mounting top seat 312 in a semi-enclosed shape, and an intake air flow channel 35 is formed between the upper cover 34 and the mounting top seat 312. A plurality of turbulent columns 36 are provided on the inner wall of the upper cover 34.

[0038] Therefore, when the driving motor 32 drives the cutting blade 4 to rotate, the driving motor 32 also drives the cooling fan 33 to rotate. The outside air enters through the air inlet duct 35, passes through the upper cooling flow port 314 and the lower cooling flow port 313, and then enters the cutting space 2, so that the cutting blade 4 can form a flowing wind in the cutting space 2. The flowing wind can not only drive the grass clippings to be discharged from the grass discharge port 5, but also drive the heat generated by the driving motor 32, thereby dissipating the heat of the driving motor 32.

[0039] The above are all preferred embodiments of the present application, and are not intended to limit the scope of protection of the present application. Therefore, any equivalent changes made based on the structure, shape, and principle of the present application should be included in the scope of protection of the present application.

Claims

1. A lawn mower cutter disc structure, comprising a cutter disc body (1), characterized in that: The cutter disc body (1) comprises a cutter disc top wall (101) and a cutter disc peripheral wall (102) extending downward from the edge of the cutter disc top wall (101), wherein the cutter disc top wall (101) and the cutter disc peripheral wall (102) form a cutting space (2); At least one mounting opening is provided on the top wall (101) of the cutter head at intervals, and a power drive assembly (3) is provided in the mounting opening. The power drive assembly (3) is connected to a cutting blade (4), and the cutting blade (4) is located in the cutting space (2); A grass discharge port (5) is provided on one side of the cutter disc peripheral wall (102), and the axial direction line of the grass discharge port (5) is located on the tangential direction line of the rotation of the cutting blade (4).

2. A lawn mower cutter disc structure according to claim 1, characterized in that: A grass discharge baffle (6) covering the grass discharge opening (5) is provided on the top wall (101) of the cutter disc.

3. The lawn mower cutter disc structure according to claim 1, characterized in that: Two mounting openings are arranged at intervals on the top wall (101) of the cutter disc. The two mounting openings are arranged alternately front and back on the top wall (101) of the cutter disc, and the power drive assembly (3) is arranged in each mounting opening.

4. The lawn mower cutter disc structure according to claim 1, characterized in that: The cutting space (2) is formed with a grass discharge flow channel (21) extending spirally upward at the plane where each cutting blade (4) is located, and the flow tail ends of the grass discharge flow channels (21) of two adjacent cutting blades (4) are connected through a connecting channel (22).

5. The lawn mower cutter disc structure according to claim 4, characterized in that: The axial direction line of the grass discharge port (5) is located on the tangential direction line of the rotation of the cutting blade (4), and is connected to the flow tail end of the grass discharge flow channel (21).

6. The lawn mower cutter disc structure according to claim 1, characterized in that: The power drive assembly (3) comprises a drive housing (31) and a drive motor (32) arranged in an inner cavity of the drive housing (31); an output shaft of the drive motor (32) extends into the cutting space (2) and is connected to the cutting blade (4).

7. The lawn mower cutter disc structure according to claim 6, characterized in that: The drive housing (31) includes a mounting base (311) fixedly disposed on the mounting opening, and a mounting top seat (312) fixed on the mounting base (311). A mounting shaft hole for the output shaft of the drive motor (32) to pass through is provided in the middle of the mounting base (311), a lower heat dissipation flow opening (313) is provided around the mounting shaft hole on the mounting base (311), and an upper heat dissipation flow opening (314) is provided on the mounting top seat (312).

8. The lawn mower cutter disc structure according to claim 7, characterized in that: The driving motor (32) is a double-headed driving motor (32), one of the output shafts of the double-headed driving motor (32) is connected to the cutting blade (4), and the other output shaft of the double-headed driving motor (32) is connected to a cooling fan (33).

9. The lawn mower cutter disc structure according to claim 7, characterized in that: An upper cover (34) is provided on the mounting top seat (312), and the upper cover (34) covers the mounting top seat (312) in a semi-enclosed shape, and an intake air flow channel (35) is formed between the upper cover (34) and the mounting top seat (312).

10. The lawn mower cutter disc structure according to claim 9, characterized in that: A plurality of turbulent columns (36) are provided on the inner wall of the upper cover (34).

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