Self-air-cooling mowing machine cutter head

Abstract

The utility model discloses a self-air-cooling mowing machine cutterhead, which relates to the technical field of mowing machines, and comprises a cutterhead shell and mowing components, the upper end of the cutterhead shell is provided with three mounting holes which are distributed in a triangle shape, each mounting hole is internally provided with one mowing component, each mowing component comprises a motor and a mowing knife, and the motor is connected with the mowing knife. A mounting hole is formed in the cutter head shell, a shell of the motor downwards extends into the cutter head shell through the mounting hole, so that an output shaft and a stator of the motor extend into the cutter head shell, a grass cutter fixing disc is fixedly mounted on the output shaft of the motor, the grass cutter is fixedly mounted on the grass cutter fixing disc, and the grass cutter is fixedly mounted on the grass cutter fixing disc. The three mowing cutters are distributed in the cutter head shell in a triangular mode, and grass discharging guide grooves are formed in the two ends of the cutter head shell. The self-air-cooling mowing machine cutterhead is good in heat dissipation effect, and the phenomenon that due to the fact that the output shaft of the motor is too long, the mowing cutter is broken when the load is too large is avoided.

Description

Technical Field

[0001] The utility model relates to the technical field of lawn mowers, in particular to a self-air-cooled lawn mower blade. Background Art

[0002] A lawn mower is a mechanical tool used for mowing lawns and vegetation. It uses a motor to drive the blades on the cutter disc to rotate to achieve the mowing action.

[0003] like Figure 1 As shown, in the existing lawn mower, the driving motor 01 is arranged above the blade 02 and connected to the mowing blade via a long connecting shaft 03. Since the motor generates a lot of heat during operation, the heat dissipation effect is poor when the motor is arranged above the blade, and the mowing blade is connected via a long connecting shaft. When the mowing blade is overloaded, the long connecting shaft is prone to breakage. Utility Model Content

[0004] The utility model aims to provide a self-air-cooled lawn mower blade to solve the problems existing in the above-mentioned prior art, with good heat dissipation effect, and avoid the output shaft of the motor being too long and breaking when the lawn mower is overloaded.

[0005] To achieve the above purpose, the utility model provides the following solutions:

[0006] The utility model provides a self-air-cooled lawn mower blade, comprising a blade housing and a mowing assembly, wherein the upper end of the blade housing is provided with three mounting holes distributed in a herringbone shape, and a mowing assembly is respectively installed in each of the mounting holes, and the mowing assembly comprises a motor and a mowing knife, and the housing of the motor extends downward into the interior of the blade housing through the mounting holes so that the output shaft and the stator of the motor extend into the blade housing, and a grass knife fixing plate is fixedly installed on the output shaft of the motor, and the grass knife is fixedly installed on the grass knife fixing plate, and the three mowing knives are distributed in the blade housing in a herringbone shape, and grass discharge guide grooves are provided at both ends of the blade housing.

[0007] Preferably, a plurality of cutter disc reinforcement ribs are fixedly provided on the upper end of the cutter disc housing.

[0008] Preferably, a plurality of suspension points are fixedly provided on the upper end of the blade housing for being suspended on the lower end of the lawn mower.

[0009] Preferably, auxiliary nylon wheels are installed at the front and rear ends of the cutter disc housing.

[0010] Compared with the prior art, the utility model has achieved the following technical effects:

[0011] The self-air-cooled lawn mower blade provided by the utility model has three lawn mower blades rotating in the same direction when working, forming a unified air duct in the blade shell, which helps to discharge the cut grass in time through the grass discharge guide grooves at both ends. At the same time, since the shell of the motor extends downward into the interior of the blade shell through the installation hole, the output shaft and the stator of the motor extend into the blade shell, and the wind formed by the lawn mower blades can take away the heat of the stator shell of the motor, thereby reducing the temperature of the motor and achieving good heat dissipation effect. Moreover, after the output shaft of the motor extends into the interior of the blade shell and is connected with the lawn mower blades, the length of the output shaft of the motor can be reduced, thereby avoiding the situation that the output shaft of the motor is too long and breaks when the lawn mower blade is overloaded, thereby increasing the service life. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] In order to more clearly illustrate the embodiments of the utility model or the technical solutions in the prior art, the drawings required for use in the embodiments will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the utility model. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative work.

[0013] Figure 1 It is a schematic diagram of the connection structure between the drive motor, the cutter disc and the mowing blade in the existing lawn mower;

[0014] Figure 2 A schematic diagram of the structure of the blade of the self-air-cooled lawn mower provided by the utility model;

[0015] Figure 3 A schematic structural diagram of a blade disc of a self-air-cooled lawn mower provided by the utility model from another perspective;

[0016] Figure 4 A top view of the blade of the self-air-cooled lawn mower provided by the utility model;

[0017] Figure 5 A bottom view of the blade of the self-air-cooled lawn mower provided by the utility model;

[0018] Figure 6 It is a schematic diagram of the cross-sectional structure of the motor and the cutter head housing in the utility model.

[0019] In the figure: 1-cutter housing, 2-motor, 21-housing, 22-output shaft, 23-stator, 3-mowing knife, 4-grass knife fixing plate, 5-grass discharge guide groove, 6-cutter head reinforcement rib, 7-suspension point, 8-auxiliary nylon wheel, 01-drive motor, 02-cutter head, 03-long connecting shaft. 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] The utility model aims to provide a self-air-cooled lawn mower blade to solve the problems existing in the prior art, has good heat dissipation effect, and avoids the output shaft of the motor being too long and breaking when the lawn mower is overloaded.

[0022] In order to make the above-mentioned purposes, features and advantages of the present invention more obvious and easy to understand, the present invention is further described in detail below in conjunction with the accompanying drawings and specific implementation methods.

[0023] like Figure 2-Figure 6 As shown, the present embodiment provides a self-air-cooled lawn mower blade, including a blade housing 1 and a mowing assembly. The upper end of the blade housing 1 is provided with three mounting holes distributed in a herringbone shape, and a mowing assembly is installed in each mounting hole. The mowing assembly includes a motor 2 and a mowing knife 3. The housing 21 of the motor 2 extends downward into the blade housing 1 through the mounting hole, so that the output shaft 22 and the stator 23 of the motor 2 extend into the blade housing 1. A grass knife fixing plate 4 is fixedly installed on the output shaft 22 of the motor 2, and the mowing knife 3 is fixedly installed on the grass knife fixing plate 4. The three mowing knives 3 are distributed in the blade housing 1 in a herringbone shape, and grass discharge guide grooves 5 are provided at both ends of the blade housing 1.

[0024] During operation, the three mowing blades 3 rotate in the same direction to form a unified air duct in the blade disc housing 1, which helps to discharge the cut grass in time through the grass discharge guide grooves 5 at both ends. At the same time, since the housing 21 of the motor 2 extends downward into the interior of the blade disc housing 1 through the mounting hole, the output shaft 22 and the stator 23 of the motor 2 extend into the blade disc housing 1. The wind formed by the mowing blades 3 can take away the heat of the stator 23 of the motor 2, reduce the temperature of the motor 2, and have a good heat dissipation effect. Moreover, the output shaft 22 of the motor 2 is connected to the mowing blades 3 after extending into the interior of the blade disc housing 1, which can also reduce the length of the output shaft of the motor 2, avoid the output shaft of the motor 2 being too long and breaking when the mowing blade 3 is overloaded, and improve the service life.

[0025] In this embodiment, a plurality of cutter disc reinforcing ribs 6 are fixedly provided on the upper end of the cutter disc housing 1 to improve the strength of the cutter disc housing 1 .

[0026] In this embodiment, a plurality of suspension points 7 are fixedly provided on the upper end of the blade housing 1 for being suspended on the lower end of the lawn mower.

[0027] In this embodiment, auxiliary nylon wheels 8 are installed at the front and rear ends of the cutter disc housing 1. When working, the auxiliary cutter disc moves on the ground with the mowing vehicle.

[0028] The present invention uses specific examples to illustrate the principle and implementation of the present invention. The above examples are only used to help understand the method and core idea of ​​the present invention. At the same time, for those skilled in the art, according to the idea of ​​the present invention, there will be changes in the specific implementation and application scope. In summary, the content of this specification should not be understood as limiting the present invention.

Claims

1. A self-air-cooled lawn mower blade, characterized in that: It includes a blade disc housing and a mowing assembly. The upper end of the blade disc housing is provided with three mounting holes distributed in a herringbone shape. A mowing assembly is installed in each mounting hole. The mowing assembly includes a motor and a mowing knife. The motor housing extends downward into the blade disc housing through the mounting holes so that the output shaft and the stator of the motor extend into the blade disc housing. A grass knife fixing plate is fixedly installed on the output shaft of the motor. The grass knife is fixedly installed on the grass knife fixing plate. The three mowing knives are distributed in the blade disc housing in a herringbone shape. Grass discharge guide grooves are provided at both ends of the blade disc housing.

2. The self-air-cooled lawn mower blade according to claim 1, characterized in that: A plurality of cutter disc reinforcing ribs are fixedly provided on the upper end of the cutter disc housing.

3. The self-air-cooled lawn mower blade according to claim 1, characterized in that: The upper end of the blade housing is fixedly provided with a plurality of suspension points for being suspended on the lower end of the lawn mower.

4. The self-air-cooled lawn mower blade according to claim 1, characterized in that: Auxiliary nylon wheels are installed at the front and rear ends of the cutter disc housing.

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