CN217389448U

CN217389448U - Transmission device of grass trimmer

Info

Publication number: CN217389448U
Application number: CN202221362225.8U
Authority: CN
Inventors: 徐�明; 王韦芸; 郑巧礼
Original assignee: Qianjiang Group Wenling Zhengfeng Power Co ltd
Current assignee: Qianjiang Group Wenling Zhengfeng Power Co ltd
Priority date: 2022-05-30
Filing date: 2022-05-30
Publication date: 2022-09-09
Anticipated expiration: 2032-05-30

Abstract

The utility model provides a transmission device of grass trimmer belongs to garden machinery equipment technical field. It solves the problem of how to further increase the stability of the transmission device of the grass trimmer. This transmission of grass cutter is equipped with the pivot on the gasoline engine, and the pivot rotates to be connected on the bearing of gasoline engine, is provided with first bevel gear in the pivot, still is connected with the transmission shaft in the pivot, is equipped with second bevel gear on the transmission shaft, still is equipped with the first belt pulley that is used for bearing the tensile belt on the transmission shaft, and first belt pulley passes through the belt and is connected with the second belt pulley, and the second belt pulley setting is on the output shaft. In this scheme, the pivot is earlier through bevel gear's structure with power transmission for the transmission shaft, and the rethread belt drive structure gives the output shaft with the power transmission of transmission shaft, and when the pivot rotated, the pulling force of belt was isolated by the transmission shaft, and one-way pulling force was not applyed for the pivot to the transmission shaft, and during the pivot motion, the bearing atress of pivot was evenly difficult to wearing and tearing among the gasoline engine, and the pivot motion is more stable.

Description

Transmission device of grass trimmer

Technical Field

The utility model relates to a garden machine equipment technical field relates to a transmission of machine of beating grass.

Background

The garden tool is a maintenance device for greening landscapes of human beings, takes maintenance of lawns, hedges, protection of flowers and plants and trees as operation objects, and replaces most of mechanized tools represented by manual labor. The common garden tools have various power modes, and mainly have engine driving, electric driving or solar driving.

For example, the chinese patent application No. 201820349571.X, whose patent name is "a multi-terrain mower", discloses a gasoline engine, a shaft, a belt pulley ii, a cutting power tension pulley, a cutting power belt and a camshaft bevel gear, wherein the cutting power tension pulley is connected with an output shaft of the gasoline engine, the gasoline engine is started, then a cutting power control part is tightened and locked, the cutting power tension pulley is tightened, the belt pulley ii drives the cutting power belt to rotate, the cutting power belt drives the belt bevel gear to rotate, the belt bevel gear drives the camshaft bevel gear to rotate, and at this time, a reciprocating cutting tool starts to work normally.

The technical scheme is that a conventional transmission mechanism in the mower is adopted, when the mower is in a working state, the cutting power belt is in a tensioning state through the cutting power tensioning wheel, the cutting power belt exerts a pulling force on the belt pulley II, the belt pulley II is subjected to unilateral stress when rotating at a high speed, when the rotating shaft rotates in the bearing, the ball in the bearing rotates and the outer ring of the bearing is extruded to easily cause abrasion, the rotating shaft does not swing on a gasoline engine stably, and finally the mower is not normally used.

Disclosure of Invention

The utility model aims at solving the problems of the prior art and providing a transmission device of a grass trimmer, which aims to solve the technical problems that: how to further increase the stability of the transmission of the grass trimmer.

The purpose of the utility model can be realized by the following technical proposal: the utility model provides a transmission of grass cutter, grass cutter include the frame and set up the gasoline engine in the frame, the frame on still fixedly connected with handrail frame and the gyro wheel that is located gasoline engine below, its characterized in that, the gasoline engine on be equipped with the pivot, the pivot rotate to be connected on the bearing of gasoline engine, the pivot on be provided with first bevel gear, the pivot on still be connected with the transmission shaft, the transmission shaft on be equipped with the second bevel gear of meshing mutually with first bevel gear, the transmission shaft on still be provided with and be used for bearing the tensile first belt pulley of belt, first belt pulley pass through the belt and the connection of second belt pulley, the second belt pulley set up on the output shaft.

In this scheme, gasoline engine's pivot is earlier through bevel gear's structure with power transmission for the transmission shaft, and the power transmission of transmission shaft is given the output shaft with the driven structure of rethread belt, and when the pivot rotated, the pulling force of belt was isolated by the transmission shaft, and one-way pulling force is not applyed for the pivot to the transmission shaft, and transmission between pivot and the transmission shaft is steady, has improved the stability of beating grass quick-witted transmission, and gear transmission power is big, efficient, has reduced the loss of gasoline engine energy.

In the transmission device of the grass trimmer, the first bevel gear and the second bevel gear are externally provided with the mounting shell, the mounting shell is provided with the bearing, the transmission shaft is rotatably connected to the bearing, and the mounting shell is provided with the L-shaped cavity. The first bevel gear and the second bevel gear are positioned in the cavity, and the mounting shell prevents forage generated by the grass mower during grass mowing from being embedded into the first bevel gear and the second bevel gear, so that the first bevel gear and the second bevel gear are protected; meanwhile, the transmission shaft is rotatably connected to the bearing of the mounting shell, so that the transmission shaft can move more stably, the belt is prevented from applying tension to the rotating shaft, and the stability of the transmission device of the grass trimmer is further improved.

In the power transmission device of the grass trimmer, the mounting shell is fixed on the gasoline engine. The installation shell fix on gasoline engine, conveniently install the installation of shell, the installation shell is fixed and can regard as an organic whole structure with installation shell and gasoline engine on gasoline engine simultaneously for the synchronism of axis of rotation and pivot motion is better.

In the transmission device of the grass trimmer, the frame is provided with the support frame, the frame is further connected with the shell, the shell is fixed on the frame and the support frame, and the shell is positioned outside the first belt pulley, the second belt pulley and the belt pulley. The shell prevents forage generated by the grass mower during grass mowing from being embedded among the first belt pulley, the second belt pulley and the belt, and ensures the stability of the movement of the first belt pulley, the second belt pulley and the belt; the support frame makes the shell more firm fix in the frame, makes things convenient for the dismouting of shell simultaneously.

In the transmission device of the grass trimmer, a tensioning wheel is further arranged between the first belt pulley and the second belt pulley, the tensioning wheel is arranged on a tensioning wheel shaft, a rotating sheet is further arranged on the rack, one end of the rotating sheet is connected with the tensioning wheel shaft, and the other end of the rotating sheet is connected with the elastic piece. The tensioning wheel can adjust the tensile force of belt to the rotor plate in the frame can make the tensioning wheel according to the tensile force of the elasticity automatically regulated belt of belt, has improved the stability of first belt pulley, second belt pulley and belt motion.

In foretell transmission of machine of beating grass, the output shaft on be provided with the fixed disk, the fixed disk on be equipped with the mounting panel, the mounting panel on around beating the grass rope, the fixed disk on still be equipped with the mounting bracket, the rope of beating the grass pass the mounting bracket. The mounting plate and the mounting frame make the grass beating rope more convenient to assemble and disassemble on the fixed disk,

in the transmission device of the grass mower, the output shaft is also provided with a cutter bowl which is positioned below the fixed disc. When the grass trimmer is used for mowing grass, the knife bowl can be used for avoiding the mounting plate from directly contacting with the ground.

In the above transmission device of the grass trimmer, a shielding plate is fixedly connected below the rack, the lower end of the shielding plate is an arc surface, and the shielding plate is further connected with a blocking plate. The shielding plate can prevent forage from entering into the top of frame, and the lower extreme of shielding plate is the cambered surface, has increased the area of sheltering from the forage, avoids the forage to get rid of the rear of beating the grass machine, and the barrier plate has increased the area of sheltering from to the forage.

Compared with the prior art, the utility model has the advantages of it is following:

1. in the scheme, the rotating shaft of the gasoline engine firstly transmits power to the transmission shaft through the structure of the bevel gear and then transmits the power of the transmission shaft to the output shaft through the belt transmission structure, when the rotating shaft rotates, the tension of the belt is isolated by the transmission shaft, the transmission shaft does not apply unidirectional tension to the rotating shaft, when the rotating shaft moves, the bearing of the rotating shaft in the gasoline engine is stressed uniformly and is not easy to wear, the rotating shaft moves more stably, the stability of the transmission device of the grass mower is improved,

2. in this scheme, the transmission shaft rotates to be connected on the bearing of installation shell for the transmission shaft motion is more stable, has avoided the belt to exert pulling force to the countershaft, has further promoted the stability of mower transmission.

Drawings

Fig. 1 is a schematic perspective view of the present invention;

FIG. 2 is a schematic view of the present invention with the outer shell removed;

fig. 3 is a schematic structural view of the present invention with the mounting shell removed;

fig. 4 is a schematic perspective view of the present invention.

In the figure, 1, a frame; 1a, a support frame; 2. a gasoline engine; 2a, a rotating shaft; 2b, a first bevel gear; 3. a roller; 4. a handrail frame; 5. a housing; 6. fixing the disc; 6a, mounting plates; 6b, a mounting rack; 7. beating a straw rope; 8. a knife bowl; 9. a drive shaft; 9a, a second bevel gear; 9b, a first belt pulley; 10. an output shaft; 10a, a second belt pulley; 11. mounting a shell; 11a, a cavity; 12. a tension pulley shaft; 12a, a tension wheel; 13. a rotating sheet; 14. a belt; 15. a fixed shaft; 16. a shielding plate; 17. a blocking plate; 18. a spring.

Detailed Description

The following are specific embodiments of the present invention and the accompanying drawings are used to further describe the technical solution of the present invention, but the present invention is not limited to these embodiments.

As shown in fig. 1, 2 and 4, in the embodiment, the grass trimmer includes a frame 1, a gasoline engine 2 and a roller 3 for moving the grass trimmer are mounted on the frame 1, and the roller 3 is located below the gasoline engine 2, so as to improve the stability of the grass trimmer during moving. The frame 1 is fixedly connected with a handrail frame 4, the handrail frame 4 is positioned at the rear part of the gasoline engine 2, and the moving direction of the grass trimmer can be changed through the handrail frame 4. Still be provided with shell 5 in frame 1, shell 5 is used for sheltering from the forage, protects the inner structure of machine of beating grass. The lower part of the grass trimmer is also provided with a baffle plate 16, the baffle plate 16 is also connected with a blocking plate 17, and the baffle plate 16 and the blocking plate 17 are used for blocking forage and preventing the forage from moving to the rear part of the grass trimmer to influence the use of an operator. Be provided with fixed disk 6 in the below of frame 1, the symmetry is provided with mounting panel 6a on the fixed disk 6, and it has the rope 7 of beating the grass to wind the grass that is used for beating the grass on the mounting panel 6a, and the dismouting of rope 7 is beaten to mounting panel 6a convenience still is equipped with mounting bracket 6b on the fixed disk 6, and rope 7 of beating the grass passes mounting bracket 6b, and mounting bracket 6b makes the rope 7 of beating the grass install more stably on fixed disk 6. The lower part of the fixed disk 6 is also provided with a knife bowl 8, and when the grass trimmer trims grass, the knife bowl 8 can be used for avoiding the mounting plate 6a from directly contacting the ground.

As shown in fig. 2 and 3, a support frame 1a is arranged on the frame 1, the housing 5 is fixed on the frame 1 and the support frame 1a through bolts, and the support frame 1a enables the housing 5 to be more conveniently assembled and disassembled and to be more stably fixed on the frame 1. Alternatively, the housing 5 may be fixed to the frame 1 and the supporting frame 1a by clipping. Be equipped with pivot 2a on the gasoline engine 2, be connected with transmission shaft 9 on the pivot 2a, pivot 2a and transmission shaft 9 are connected through gear structure, be equipped with first bevel gear 2b on the pivot 2a, be equipped with second bevel gear 9a on the transmission shaft 9, first bevel gear 2b and second bevel gear 9a mesh mutually, fixedly connected with installation shell 11 on the gasoline engine 2, installation shell 11 has the passageway of L shape, first bevel gear 2b and second bevel gear 9a all are located the passageway. The mounting shell 11 is also provided with a bearing, and the transmission shaft 9 is mounted in the bearing in the mounting shell 11. The installation shell 11 is fixed on gasoline engine 2, conveniently installs the installation of shell 11, and the installation shell 11 is fixed and can regard as integrative structure with installation shell 11 and gasoline engine 2 on gasoline engine 2 simultaneously for the synchronism of axis of rotation and the motion of pivot 2a is better.

As shown in fig. 4, a first belt pulley 9b is further disposed on the transmission shaft 9, the first belt pulley 9b is connected with a second belt pulley 10a through a belt, wherein the second belt pulley 10a is fixed on the output shaft 10, and the output shaft 10 is connected with the fixed disk 6. The frame 1 is further rotatably provided with a rotating sheet 13, one end of the rotating sheet 13 is provided with a tensioning wheel shaft 12, the other end of the rotating sheet 13 is provided with a spring 18, one end of the spring 18 is connected to the rotating sheet 13, the other end of the spring 18 is connected with a fixed shaft 15 on the frame 1, the tensioning wheel shaft 12 is provided with a tensioning wheel 12a, and the tensioning wheel 12a is in contact with the belt 14 and is positioned between the first belt pulley 9b and the second belt pulley 10 a. The lower end of the baffle plate 16 is a cambered surface, so that the area for shielding forage is increased, and the forage is prevented from being thrown to the rear of the grass mower.

In this scheme, first bevel gear 2b and second bevel gear 9a are located the cavity 11a of installation shell 11, transmission shaft 9 rotates to be connected on the bearing of installation shell 11, power transmission is given transmission shaft 9 through bevel gear's structure earlier to pivot 2a of gasoline engine 2, rethread belt drive's structure gives output shaft 10 with transmission shaft 9's power transmission, when pivot 2a rotates, the pulling force of belt 14 is isolated by transmission shaft 9, one-way pulling force is not applyed for pivot 2a to transmission shaft 9, during the motion of pivot 2a, the even difficult wearing and tearing of pivot 2 a's bearing atress in the gasoline engine 2, pivot 2a motion is more stable makes the transmission between pivot 2a and the transmission shaft 9 steady, the stability of the quick-witted transmission of beating grass has been improved.

The specific embodiments described herein are merely illustrative of the spirit of the invention. Various modifications, additions and substitutions for the specific embodiments described herein may be made by those skilled in the art without departing from the spirit of the invention or exceeding the scope of the invention as defined in the accompanying claims.

Although 1, rack is used more herein; 1a, a support frame; 2. a gasoline engine; 2a, a rotating shaft; 2b, a first bevel gear; 3. a roller; 4. a handrail frame; 5. a housing; 6. fixing the disc; 6a, mounting plates; 6b, a mounting rack; 7. beating a straw rope; 8. a knife bowl; 9. a drive shaft; 9a, a second bevel gear; 9b, a first belt pulley; 10. an output shaft; 10a, a second belt pulley; 11. mounting a shell; 11a, a cavity; 12. a tension pulley shaft; 12a, a tension pulley; 13. a rotating sheet; 14. a belt; 15. a fixed shaft; 16. a shielding plate; 17. a blocking plate; 18. springs, etc., but does not exclude the possibility of using other terms. These terms are used merely to more conveniently describe and explain the nature of the present invention; they are to be construed in a manner that is inconsistent with the spirit of the invention.

Claims

1. A transmission device of a grass trimmer comprises a rack (1) and a gasoline engine (2) arranged on the rack (1), wherein a handrail frame (4) and a roller (3) positioned below the gasoline engine (2) are fixedly connected to the rack (1), the grass trimmer is characterized in that a rotating shaft (2a) is arranged on the gasoline engine (2), the rotating shaft (2a) is rotatably connected to a bearing of the gasoline engine (2), a first bevel gear (2b) is arranged on the rotating shaft (2a), a transmission shaft (9) is further connected to the rotating shaft (2a), a second bevel gear (9a) meshed with the first bevel gear (2b) is arranged on the transmission shaft (9), a first belt pulley (9b) used for bearing the tensile force of a belt is further arranged on the transmission shaft (9), and the first belt pulley (9b) is connected with a second belt pulley (10a) through a belt (14), the second belt pulley (10a) is arranged on the output shaft (10).

2. The transmission device of the grass trimmer according to claim 1, wherein a mounting shell (11) is further arranged outside the first bevel gear (2b) and the second bevel gear (9a), a bearing is arranged on the mounting shell (11), the transmission shaft (9) is rotatably connected to the bearing, and an L-shaped cavity (11a) is formed in the mounting shell (11).

3. A transmission of a lawnmower according to claim 2, wherein the mounting housing (11) is fixed to the gasoline engine (2).

4. A transmission device for a grass cutter according to claim 3, characterized in that the frame (1) is provided with a support frame (1a), the frame (1) is further connected with a housing (5), the housing (5) is fixed on the frame (1) and the support frame (1a), and the housing (5) is positioned outside the first belt pulley (9b), the second belt pulley (10a) and the belt (14).

5. A transmission device of a grass trimmer according to claim 4, characterized in that a tension wheel (12a) is arranged between the first belt pulley (9b) and the second belt pulley (10a), the tension wheel (12a) is arranged on a tension wheel shaft (12), a rotating sheet (13) is arranged on the frame (1), one end of the rotating sheet (13) is connected with the tension wheel shaft (12), and the other end of the rotating sheet (13) is connected with a spring (18).

6. A transmission device of a grass trimmer according to claim 5, characterized in that the output shaft (10) is provided with a fixed disc (6), the fixed disc (6) is provided with a mounting plate (6a), the mounting plate (6a) is wound with a grass mowing rope (7), the fixed disc (6) is further provided with a mounting frame (6b), and the grass mowing rope (7) penetrates through the mounting frame (6 b).

7. A transmission device of a grass cutter as claimed in claim 6, characterized in that the output shaft (10) is further provided with a cutter bowl (8), and the cutter bowl (8) is positioned below the fixed disc (6).

8. The transmission device of the grass trimmer according to claim 7, characterized in that a shielding plate (16) is fixedly connected below the frame (1), the lower end of the shielding plate (16) is an arc surface, and the shielding plate (16) is further connected with a blocking plate (17).