CN218897550U

CN218897550U - Double-blade cutting mechanism of mower

Info

Publication number: CN218897550U
Application number: CN202222237217.7U
Authority: CN
Inventors: 粟生强; 罗强; 王海宝; 王剑英; 唐熙; 郑涵
Original assignee: Chongqing Three Gorges University
Current assignee: Chongqing Three Gorges University
Priority date: 2022-08-24
Filing date: 2022-08-24
Publication date: 2023-04-25
Anticipated expiration: 2032-08-24

Abstract

The utility model provides a double-blade cutting mechanism of a mower, which comprises a fixed seat, wherein a containing cavity is arranged in the fixed seat, an inner rotating shaft is rotationally connected to the top of the fixed seat, an outer rotating shaft is rotationally sleeved outside the inner rotating shaft, the outer rotating shaft is rotationally connected with the bottom of the fixed seat, a motor is fixed on the fixed seat, a driving bevel gear is fixed at the output end of the motor, a first driven bevel gear is fixed on the inner rotating shaft, a second driven bevel gear is fixed on the outer rotating shaft, a lower blade is fixed at the bottom end of the inner rotating shaft, and an upper blade is fixed at the bottom end of the outer rotating shaft. According to the utility model, the upper blades and the lower blades are arranged at intervals, and the two blades cut grass at the same time, so that the grass can be cut into a plurality of sections, and the cut grass is finer; and when facing the lodged grass, because the rotation direction of the upper blade is opposite to that of the lower blade, if one blade rotates along the lodging direction of the grass, the rotation direction of the other blade is opposite to that of the grass, so that the lodged grass can be righted, and cutting can be smoothly completed.

Description

Double-blade cutting mechanism of mower

Technical Field

The utility model relates to the technical field of mowers, in particular to a double-blade cutting mechanism of a mowing machine.

Background

At present, a mower is commonly used in mowing operation, and mainly comprises a travelling mechanism and a cutting mechanism, wherein the cutting mechanism is used for mowing and is a core part of the mower. Most of the cutting mechanisms of the existing mowers adopt single blades, the cut grass is long, and when the cut grass is used for other purposes, for example, the cut grass is used as fertilizer or feed for grasslands, and secondary cutting is needed to be carried out on the cut grass; and when single blade cutting mechanism faces the grass of lodging, if the blade is rotatory along the direction that grass lodged, then the grass of lodging probably can not obtain cutting, leads to mowing effect relatively poor. Accordingly, the present utility model provides a dual blade cutting mechanism for a mower to solve the above-mentioned technical problems.

Disclosure of Invention

The utility model aims to solve the problems in the prior art and provides a double-blade cutting mechanism of a mower.

The utility model aims to achieve the aim, and the aim is achieved by the following technical scheme:

the utility model provides a double-blade cutting mechanism of lawn mower, includes the fixing base, the inside chamber that holds that is equipped with of fixing base, the fixing base top rotates and is connected with the internal rotation axle, the internal rotation axle passes the fixing base bottom, the external rotation axle has been cup jointed in the external rotation axle, the external rotation axle with the fixing base bottom rotates to be connected, be fixed with the motor on the fixing base, the output of motor is fixed with driving bevel gear, be fixed with first driven bevel gear in the internal rotation axle, be fixed with second driven bevel gear in the external rotation axle, first driven bevel gear and second driven bevel gear all with driving bevel gear meshing, first driven bevel gear, second driven bevel gear and driving bevel gear all are located hold the intracavity, the internal rotation axle bottom is fixed with down the blade, the external rotation axle bottom is fixed with the blade, the blade interval sets up down the blade top.

Preferably, an auxiliary bevel gear is further arranged in the accommodating cavity, the first driven bevel gear and the second driven bevel gear are meshed with the auxiliary bevel gear, the auxiliary bevel gear and the driving bevel gear are symmetrically arranged along the axis direction of the motor output shaft, the fixing seat is rotationally connected with an auxiliary rotating shaft, and the auxiliary bevel gear is fixed on the auxiliary rotating shaft.

Preferably, the inner shaft is rotatably connected with the outer shaft through a first bearing.

Preferably, the inner rotating shaft is rotatably connected with the top of the fixing seat through a second bearing.

Preferably, the outer rotating shaft is rotatably connected with the bottom of the fixing seat through a third bearing.

Preferably, the motor is fixed outside the fixing seat, and an output shaft of the motor is rotationally connected with the fixing seat through a fourth bearing.

Preferably, the auxiliary rotating shaft is rotatably connected with the fixing seat through a fifth bearing.

Compared with the prior art, the utility model has the beneficial effects that:

according to the utility model, the upper blade and the lower blade which are arranged at intervals are arranged, and the two blades cut grass at the same time, so that the grass can be cut into a plurality of sections, and the cut grass is finer; and when facing the lodged grass, because the rotation direction of the upper blade is opposite to that of the lower blade, if one blade rotates along the lodging direction of the grass, the rotation direction of the other blade is opposite to that of the grass, so that the lodged grass can be righted, and cutting can be smoothly completed.

Drawings

Fig. 1 is a schematic perspective view of the present utility model.

Description of the reference numerals

The device comprises a fixed seat 1, a containing cavity 2, an inner rotating shaft 3, an outer rotating shaft 4, a motor 5, a driving bevel gear 6, a first driven bevel gear 7, a second driven bevel gear 8, a lower blade 9, an upper blade 10, an auxiliary bevel gear 11 and an auxiliary rotating shaft 12.

Detailed Description

The utility model will be further illustrated with reference to specific examples. It is to be understood that these examples are illustrative of the present utility model and are not intended to limit the scope of the present utility model. Further, it will be understood that various changes or modifications may be made by those skilled in the art after reading the teachings of the utility model, and such equivalents are intended to fall within the scope of the utility model as defined herein.

As shown in the attached drawing 1, a double-blade cutting mechanism of a mower comprises a fixed seat 1, a containing cavity 2 is arranged inside the fixed seat 1, an inner rotating shaft 3 is rotatably connected to the top of the fixed seat 1, the inner rotating shaft 3 penetrates through the bottom of the fixed seat 1, an outer rotating shaft 4 is rotatably sleeved outside the inner rotating shaft 3, the outer rotating shaft 4 is rotatably connected with the bottom of the fixed seat 1, a motor 5 is fixed on the fixed seat 1, a driving bevel gear 6 is fixed at the output end of the motor 5, a first driven bevel gear 7 is fixed on the inner rotating shaft 3, a second driven bevel gear 8 is fixed on the outer rotating shaft 4, the first driven bevel gear 7 and the second driven bevel gear 8 are meshed with the driving bevel gear 6, the first driven bevel gear 7, the second driven bevel gear 8 and the driving bevel gear 6 are located in the containing cavity 2, a lower blade 9 is fixed at the bottom of the inner rotating shaft 3, an upper blade 10 is fixed at the bottom of the outer rotating shaft 4, and the upper blade 10 is arranged above the lower blade 9 at intervals.

Specifically, the inside of the outer rotating shaft 4 is hollow, the inner rotating shaft 3 and the outer rotating shaft 4 can be rotationally connected through a bearing, the inner ring of the bearing is sleeved on the inner rotating shaft 3, the outer rotating shaft 4 is sleeved on the outer ring of the bearing, the inner rotating shaft 3 and the top of the fixing seat 1 can be rotationally connected through the bearing, the outer rotating shaft 4 and the bottom of the fixing seat 1 can be rotationally connected through the bearing, the motor 5 can be fixed outside the fixing seat 1, and the output shaft of the motor 5 can be rotationally connected with the fixing seat 1 through the bearing. The working principle of the double-blade cutting mechanism of the mower in the embodiment is as follows: the motor 5 drives the drive bevel gear 6 to rotate, the drive bevel gear 6 simultaneously drives the first driven bevel gear 7 and the second driven bevel gear 8 to rotate, and then the inner rotating shaft 3 and the outer rotating shaft 4 simultaneously rotate, and because the rotation directions of the first driven bevel gear 7 and the second driven bevel gear 8 are opposite, the rotation directions of the inner rotating shaft 3 and the outer rotating shaft 4 are opposite, and the rotation directions of the upper blade 10 and the lower blade 9 are opposite. When mowing is performed, as the upper blade 10 and the lower blade 9 are arranged at intervals up and down, the two blades cut grass at the same time, so that the grass can be cut into a plurality of sections, and the cut grass is finer; and when facing the lodged grass, because the rotation direction of the upper blade 10 is opposite to that of the lower blade 9, if one blade rotates along the lodging direction of the grass, the rotation direction of the other blade is opposite to that of the grass, so that the lodged grass can be righted, and cutting can be smoothly completed.

In some embodiments, an auxiliary bevel gear 11 is further arranged in the accommodating cavity 2, the first driven bevel gear 7 and the second driven bevel gear 8 are meshed with the auxiliary bevel gear 11, the auxiliary bevel gear 11 and the drive bevel gear 6 are symmetrically arranged along the axis direction of the output shaft of the motor 5, the fixing base 1 is rotationally connected with an auxiliary rotating shaft 12, the auxiliary bevel gear 11 is fixed on the auxiliary rotating shaft 12, and the auxiliary rotating shaft 12 can be rotationally connected with the fixing base 1 through a bearing.

Claims

1. The utility model provides a two blade cutting mechanism of lawn mower, its characterized in that, includes the fixing base, the inside chamber that holds that is equipped with of fixing base, the fixing base top rotates and is connected with the internal rotation axle, the internal rotation axle passes the fixing base bottom, the external rotation axle has been cup jointed in the external rotation axle, the external rotation axle with the fixing base bottom rotates to be connected, be fixed with the motor on the fixing base, the output of motor is fixed with driving bevel gear, be fixed with first driven bevel gear in the internal rotation axle, be fixed with second driven bevel gear in the external rotation axle, first driven bevel gear and second driven bevel gear all with driving bevel gear meshing, first driven bevel gear, second driven bevel gear and driving bevel gear all are located hold the intracavity, the internal rotation axle bottom is fixed with down the blade, the external rotation axle bottom is fixed with the blade, the blade interval sets up down the blade top.

2. A dual blade cutting mechanism for a lawnmower as claimed in claim 1 wherein: the motor is characterized in that an auxiliary bevel gear is further arranged in the accommodating cavity, the first driven bevel gear and the second driven bevel gear are meshed with the auxiliary bevel gear, the auxiliary bevel gear and the driving bevel gear are symmetrically arranged along the axis direction of the motor output shaft, the fixing seat is rotationally connected with an auxiliary rotating shaft, and the auxiliary bevel gear is fixed on the auxiliary rotating shaft.

3. A dual blade cutting mechanism for a lawnmower as claimed in claim 1 wherein: the inner rotating shaft is rotatably connected with the outer rotating shaft through a first bearing.

4. A dual blade cutting mechanism for a lawnmower as claimed in claim 1 wherein: the inner rotating shaft is rotatably connected with the top of the fixing seat through a second bearing.

5. A dual blade cutting mechanism for a lawnmower as claimed in claim 1 wherein: the outer rotating shaft is rotatably connected with the bottom of the fixed seat through a third bearing.

6. A dual blade cutting mechanism for a lawnmower as claimed in claim 1 wherein: the motor is fixed outside the fixing base, and an output shaft of the motor is rotationally connected with the fixing base through a fourth bearing.

7. A dual blade cutting mechanism for a lawnmower as claimed in claim 2 wherein: the auxiliary rotating shaft is rotationally connected with the fixing seat through a fifth bearing.