Copper bush structure used in gear box of brush cutter

Abstract

The utility model discloses a copper bush structure used in a brush cutter gear box, which comprises a gear box assembly, a driving gear shaft and a driven gear shaft, the driving gear shaft is rotatably connected in the gear box assembly, a copper bush is arranged in the gear box assembly, the driven gear shaft is rotatably connected in the copper bush, and the driving gear shaft and the driven gear shaft are rotatably connected in the copper bush. Oil grooves are uniformly distributed in the inner diameter of the copper sleeve; the utility model has a simple structure, and solves the problem of dry friction heating under the condition of insufficient oil supply.

Description

Technical Field

[0001] The utility model relates to the technical field of brush cutters, in particular to a copper sleeve structure used in a gear box of a brush cutter. Background Art

[0002] A brush cutter is a machine used for cutting grass and branches, primarily for landscaping, clearing bushes in forests, or maintaining large green belts along roadsides. Its compact size, light weight, and ease of operation make it suitable for a variety of environments, including home gardens, fields, and mountainous terrain.

[0003] The left and right split gearboxes on existing gasoline brush cutters and electric brush cutters use copper sleeves instead of bearings. After a long period of operation, due to insufficient lubrication or insufficient oil filling, the copper sleeves will rub against the gear shaft, causing heat and damage. Utility Model Content

[0004] The technical problem to be solved by the utility model is to provide a copper sleeve structure for the gear box of a brush cutter, which has a simple structure and solves the problem of dry friction heating under insufficient oil supply.

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

[0006] A copper sleeve structure for the gearbox of a brush cutter includes a gearbox assembly, a driving gear shaft, and a driven gear shaft. The driving gear shaft is rotatably connected to the gearbox assembly. A copper sleeve is installed in the gearbox assembly. The driven gear shaft is rotatably connected to the copper sleeve. Oil grooves are evenly distributed on the inner diameter of the copper sleeve.

[0007] A further technical solution is that the oil groove distributed on the inner diameter of the copper sleeve is not connected to the bottom of the copper sleeve. The oil groove is on the inner diameter of the copper sleeve, and its top notch extends to the top of the copper sleeve, but its bottom is not connected to the bottom of the copper sleeve, which can effectively prevent the lubricating oil from flowing out of the bottom of the copper sleeve, so that the lubricating oil can be stored in the oil groove to a greater extent, and the lubrication time can be longer.

[0008] A further technical solution is that the driving gear shaft and the driven gear shaft are meshed and connected with each other, and power transmission is achieved through the meshing of gears on the driving gear shaft and the driven gear shaft.

[0009] A further technical solution is that the gearbox assembly includes a left gearbox cover and a right gearbox cover, and the gearbox assembly is fixed by the left gearbox cover and the right gearbox cover by bolts, which is convenient for installation.

[0010] A further technical solution is that a first bearing and a second bearing are also installed in the gearbox assembly, the driving gear shaft is rotatably connected in the first bearing, and the driven gear shaft is rotatably connected in the second bearing, and the first bearing and the second bearing mainly bear the rotation of the driving gear shaft and the driven gear shaft.

[0011] The beneficial effect of the utility model is that the utility model is a copper sleeve structure for the gear box of a brush cutter, in which an oil groove is added on the inner diameter of the copper sleeve so that the lubricating oil is fully retained in the inner cavity of the copper sleeve, thereby better lubricating the driven gear shaft and solving the problem of dry friction heating when the oil supply is insufficient. BRIEF DESCRIPTION OF THE DRAWINGS

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

[0013] Figure 1 This is a schematic diagram of the original copper sleeve used inside the brush cutter gearbox;

[0014] Figure 2 This is a cross-sectional view of a copper sleeve structure used inside a brush cutter gearbox according to the present invention;

[0015] Figure 3 This is an exploded view of a copper sleeve structure used inside a brush cutter gearbox according to the present invention;

[0016] Figure 4 The utility model is a schematic diagram of a copper sleeve in a copper sleeve structure used in a gear box of a brush cutter.

[0017] Figure 1-4 Middle: 1-driving gear shaft, 2-gearbox assembly, 3-first bearing, 4-copper sleeve, 5-driven gear shaft, 6-second bearing, 7-oil groove, 21-left gearbox cover, 22-right gearbox cover. DETAILED DESCRIPTION

[0018] The preferred embodiments of the present invention are described in detail below in conjunction with the accompanying drawings so that the advantages and features of the present invention can be more easily understood by those skilled in the art, thereby making a clearer and more precise definition of the protection scope of the present invention.

[0019] See Figures 2 to 4As shown, a copper sleeve structure for the gearbox of a brush cutter includes a gearbox assembly 2, a driving gear shaft 1 and a driven gear shaft 5. The driving gear shaft 1 is rotatably connected to the gearbox assembly 2. A copper sleeve 4 is installed in the gearbox assembly 2. The driven gear shaft 5 is rotatably connected to the copper sleeve 4. Oil grooves 7 are evenly distributed on the inner diameter of the copper sleeve 4.

[0020] The oil groove 7 distributed on the inner diameter of the copper sleeve 4 is not connected to the bottom of the copper sleeve 4. The oil groove 7 is on the inner diameter of the copper sleeve 4, and its top notch extends to the top of the copper sleeve 4, but its bottom is not connected to the bottom of the copper sleeve 4. This can effectively prevent the lubricating oil from flowing out of the bottom of the copper sleeve 4, so that the lubricating oil can be retained in the oil groove 7 to a greater extent, and the lubrication time is longer. The driving gear shaft 1 and the driven gear shaft 5 are meshed and connected to each other, and power transmission is achieved through the meshing of the gears on the driving gear shaft 1 and the driven gear shaft 5. The gearbox assembly 2 includes a left gearbox cover 21 and a right gearbox cover 22. The gearbox assembly 2 is fixed by the left gearbox cover 21 and the right gearbox cover 22 with bolts for easy installation. A first bearing 3 and a second bearing 6 are also installed in the gearbox assembly 2. The driving gear shaft 1 is rotatably connected to the first bearing 3, and the driven gear shaft 5 is rotatably connected to the second bearing 6. The first bearing 3 and the second bearing 6 mainly bear the rotation of the driving gear shaft 1 and the driven gear shaft 5.

[0021] In this embodiment, the driving gear shaft 1 and the driven gear shaft 5 are installed and rotatably connected in the gear box assembly 2. The top shaft end of the driven gear shaft 5 is built into the copper sleeve 4 in the gear box assembly 2, and lubricating oil is added to the copper sleeve 4, so that the driven gear shaft 5 does not generate dry friction in the copper sleeve 4, solving the problem of dry friction heating in the case of insufficient oil supply. The driving gear shaft 1 is connected to the power output end of the brush cutter, and the bottom end of the driven gear shaft 5 is connected to the brush cutter head, which is equipped with a cutter head or saw blade or other cutting tools.

[0022] The above embodiment is only an example of the present invention and is not intended to limit the implementation and scope of rights of the present invention. Any technical solution that is identical or equivalent to the content described in the claims of the present invention should be included in the protection scope of the present invention.

Claims

1. A copper sleeve structure for a brush cutter gearbox, comprising a gearbox assembly, a driving gear shaft, and a driven gear shaft, wherein the driving gear shaft is rotatably connected to the gearbox assembly, and characterized in that: A copper sleeve is installed in the gear box assembly, and the driven gear shaft is rotatably connected in the copper sleeve. Oil grooves are evenly distributed on the inner diameter of the copper sleeve.

2. The copper sleeve structure for a brush cutter gearbox according to claim 1, characterized in that: The oil grooves distributed on the inner diameter of the copper sleeve are not connected to the bottom of the copper sleeve.

3. The copper sleeve structure for a brush cutter gearbox according to claim 1, characterized in that: The driving gear shaft and the driven gear shaft are meshed and connected with each other.

4. The copper sleeve structure for a brush cutter gearbox according to claim 1, characterized in that: The gear box assembly includes a left gear box cover and a right gear box cover.

5. The copper sleeve structure for a brush cutter gearbox according to claim 1, characterized in that: A first bearing and a second bearing are also installed in the gear box assembly. The driving gear shaft is rotatably connected to the first bearing, and the driven gear shaft is rotatably connected to the second bearing.

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