Grass winding prevention device for mower

Abstract

The grass winding prevention device comprises a knife rest shaft located on the mower, the two ends of the knife rest shaft are each provided with a grass winding prevention device body, each grass winding prevention device body comprises a shell, fan blades and a rotating disc, the shells are symmetrically installed on a rack of the mower, and the rotating discs are rotatably installed on the inner side faces of the shells. The fan blades are installed on the side face of the rotating disc and located in the shell, a main shaft of the knife rest shaft sequentially penetrates through the rotating disc, the fan blades and the shell to be connected with the power output end of the mower, and the main shaft of the knife rest shaft is fixedly connected with the rotating disc. According to the grass winding prevention device, by means of rotation of the cutter shaft, the rotary disc and the fan blades on the rotary disc are driven to rotate, the fan blades rotate to generate airflow, the airflow flows to blow weeds to be away from the end of the cutter shaft, the weeds can enter the cutting area of the cutter shaft, and the weeding efficiency is improved. And the generated air flow can carry heat generated by rotation of the cutter shaft, so that the heat dissipation efficiency of the cutter shaft is improved.

Description

Technical Field

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

[0002] When a self-propelled lawn mower is working, weeds often mix into the blade shaft and then entangle at both ends of the blade shaft, affecting the rotation of the blade shaft. Weeds may even enter the end of the blade shaft and block the bearing, causing the blade shaft to be unable to rotate normally. This affects the normal use of the equipment on the one hand, and causes excessive energy consumption on the other.

[0003] Generally, in order to prevent weeds from getting entangled in the blade shaft, a circular weed-proof shell is installed at both ends of the blade shaft. The blade shaft passes through the weed-proof shell and is connected to the power source of the lawn mower. Although this prevents weeds from getting entangled, its airtightness also affects the heat dissipation efficiency of the frictional heat generated by the rotation of the blade shaft. Utility Model Content

[0004] The utility model aims to provide a grass entanglement prevention device for a lawn mower, so as to solve the problem that the existing lawn mower uses a grass entanglement prevention shell, which affects the heat dissipation efficiency of frictional heat generated by the rotation of the cutter shaft.

[0005] In order to solve the above technical problems, the utility model adopts the following technical solutions:

[0006] A grass-entanglement prevention device for a lawn mower comprises a cutter holder shaft located on the lawn mower, grass-entanglement prevention devices are installed at both ends of the cutter holder shaft, the grass-entanglement prevention device comprises a shell, fan blades and a turntable, the shell is symmetrically installed on the frame of the lawn mower, the turntable is rotatably installed on the inner side surface of the shell, the fan blades are installed on the side surface of the turntable and are located in the shell, the main shaft of the cutter holder shaft passes through the turntable, the fan blades and the shell in sequence and is connected to the power output end of the lawn mower, and the main shaft of the cutter holder shaft is fixedly connected to the turntable.

[0007] A further technical solution is: a plurality of air holes are arranged on the rotating disk.

[0008] A further technical solution is that the two fan blades blow air towards each other.

[0009] A further technical solution is that arc-shaped baffles are symmetrically arranged on the outer side of the frame.

[0010] A further technical solution is that a filter screen is arranged on the air inlet of the shell.

[0011] A further technical solution is that the inner side of the shell is connected to or overlaps with the cutting track on the tool holder shaft.

[0012] Compared with the prior art, the present invention can achieve at least one of the following beneficial effects:

[0013] The utility model provides an anti-weed entanglement device for a lawn mower, which relies on the rotation of the blade shaft to drive the turntable and the fan blades thereon to rotate, and the rotation of the fan blades generates airflow, which blows the weeds away from the end of the blade shaft and allows the weeds to enter the cutting area of ​​the blade shaft, thereby accelerating the weeding efficiency. Moreover, the generated airflow can also carry away the heat generated by the rotation of the blade shaft, thereby improving the heat dissipation efficiency of the blade shaft. BRIEF DESCRIPTION OF THE DRAWINGS

[0014] Figure 1 The utility model is a structural schematic diagram of a grass entanglement prevention device for a lawn mower.

[0015] Figure 2 For this utility model Figure 1 Schematic diagram of the structure of the middle knife holder shaft and the anti-grass entanglement device.

[0016] Figure 3 For this utility model Figure 1 Schematic diagram of the structure of the anti-grass entanglement device.

[0017] Figure 4 For this utility model Figure 3 Another side view of the structure.

[0018] Figure numerals: 1. blade shaft; 2. anti-grass entanglement device; 3. housing; 4. fan blades; 5. turntable; 6. frame; 7. arc baffle; 8. filter screen. DETAILED DESCRIPTION

[0019] In order to make the purpose, technical scheme and advantages of the embodiments of the present invention clearer, the technical scheme in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. The components of the embodiments of the present invention described and shown in the drawings here can be arranged and designed in various different configurations.

[0020] Therefore, the following detailed description of the embodiments of the present invention provided in the accompanying drawings is not intended to limit the scope of the claimed invention, but merely represents selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in the field without creative work are within the scope of protection of the present invention.

[0021] It should be noted that, in the absence of conflict, the embodiments of the present invention and the features thereof may be combined with each other.

[0022] It should be noted that similar reference numerals and letters denote similar items in the following drawings, and therefore, once an item is defined in one drawing, further definition and explanation thereof is not required in subsequent drawings.

[0023] In the description of the present utility model, it should be noted that the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, or the positions or positional relationships in which the utility model product is usually placed when in use, or the positions or positional relationships commonly understood by those skilled in the art, which are only for the convenience of describing the present utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the present utility model. In addition, the terms "first", "second", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance.

[0024] In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0025] Embodiment 1:

[0026] In this embodiment, Figure 1 , Figure 2 , Figure 3 and Figure 4 As shown, an anti-grass entanglement device for a lawn mower comprises a cutter shaft 1 located on the lawn mower, anti-grass entanglement devices 2 are installed at both ends of the cutter shaft 1, the anti-grass entanglement device 2 comprises a shell 3, fan blades 4 and a turntable 5, the shell 3 is symmetrically installed on a frame 6 of the lawn mower, the turntable 5 is rotatably installed on the inner side of the shell 3, the fan blades 4 are installed on the side of the turntable 5 and are located in the shell 3, the main shaft of the cutter shaft 1 passes through the turntable 5, the fan blades 4 and the shell 3 in sequence and is connected to the power output end of the lawn mower, and the main shaft of the cutter shaft 1 is fixedly connected to the turntable 5.

[0027] The working process of the utility model is as follows: the anti-weed entanglement device 2 relies on the rotation of the blade shaft on the blade holder shaft 1, and then drives the turntable 5 and the fan blades 4 thereon to rotate. The rotation of the fan blades 4 generates airflow, and the airflow blows the weeds away from the end of the blade shaft and allows the weeds to enter the cutting area of ​​the blade shaft, thereby accelerating the weeding efficiency. Moreover, the generated airflow can also carry away the heat generated by the rotation of the blade shaft, thereby improving the heat dissipation efficiency of the blade shaft.

[0028] Preferably, a plurality of air holes are provided on the rotating disk 5 .

[0029] Preferably, the two fan blades 4 blow air towards each other.

[0030] The two fan blades 4 blow air towards each other to gather the weeds toward the middle and away from the end of the knife shaft, and it is more convenient for the cutting knife on the knife shaft to harvest.

[0031] Preferably, arc-shaped baffles 7 are symmetrically arranged on the outer side of the frame 6 .

[0032] The arc-shaped baffle plate 7 is used to separate the weeds in front of the lawn mower and keep the weeds outside the lawn mower away from the air inlet end of the anti-weed entanglement device 2 to prevent the weeds from mixing into the anti-weed entanglement device 2.

[0033] Preferably, a filter screen 8 is provided on the air inlet of the housing 3 .

[0034] Prevent weeds from being mixed into the anti-weed entanglement device 2 from the air inlet end thereof, thereby affecting its normal operation.

[0035] Preferably, the inner side of the housing 3 is connected to or overlaps with the cutting track on the tool holder shaft 1 .

[0036] It is ensured that the weeds gathered by the two fan blades 4 can be effectively removed by the cutting knife on the knife holder shaft 1.

[0037] Although the present invention has been described in detail with reference to the aforementioned embodiments, those skilled in the art can still modify the technical solutions described in the aforementioned embodiments, or make equivalent substitutions for some of the technical features therein. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A grass entanglement prevention device for a lawn mower, comprising a blade holder shaft (1) located on the lawn mower, characterized in that: Both ends of the blade holder shaft (1) are provided with an anti-grass entanglement device (2), the anti-grass entanglement device (2) comprising a housing (3), a fan blade (4) and a rotating disc (5), the housing (3) being symmetrically mounted on a frame (6) of the lawn mower, the rotating disc (5) being rotatably mounted on an inner side surface of the housing (3), the fan blade (4) being mounted on a side surface of the rotating disc (5) and being located inside the housing (3), the main shaft of the blade holder shaft (1) passing through the rotating disc (5), the fan blade (4) and the housing (3) in sequence and being connected to a power output end of the lawn mower, and the main shaft of the blade holder shaft (1) being fixedly connected to the rotating disc (5).

2. The anti-grass entanglement device for a lawn mower according to claim 1, characterized in that: The rotating disk (5) is provided with a plurality of air holes.

3. The anti-grass entanglement device for a lawn mower according to claim 1, characterized in that: The two fan blades (4) blow air towards each other.

4. The anti-grass entanglement device for a lawn mower according to claim 1, characterized in that: Arc-shaped baffles (7) are symmetrically arranged on the outer side of the frame (6).

5. The anti-grass entanglement device for a lawn mower according to claim 1, characterized in that: A filter screen (8) is provided on the air inlet of the housing (3).

6. The anti-grass entanglement device for a lawn mower according to claim 1, characterized in that: The inner side of the housing (3) is connected to or overlaps with the cutting track on the tool holder shaft (1).

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