Brush cutter connecting disc combination

Abstract

The utility model discloses a brush cutter connecting disc combination, and relates to the technical field of connecting discs, in particular to a connecting disc combination for a brush cutter, which comprises a connecting disc main body, a bearing seat combination is mounted at the lower part in the connecting disc main body, and screws are mounted on two sides of the bearing seat combination. A cooling fan is installed below the bearing seat assembly, a driven disc transmission shaft is arranged in the cooling fan in a penetrating mode, a driven disc is integrally and fixedly installed below the driven disc transmission shaft, and a driven disc circular opening is formed in the end face of the driven disc. The connecting disc combination is provided with a bearing seat combination which is fixedly installed at the rear end of a connecting disc body through screws to form a cavity, lubricating grease is injected into the cavity, and the problem that a transmission shaft spline and a driven disc spline hole are prone to abrasion is solved; and meanwhile, a high-speed rotating cooling fan is arranged, and cooling air sequentially flows from the opening of the driven disc, the cooling fan and the strip-shaped opening of the connecting disc body to dissipate heat of the connecting disc body.

Description

Technical Field

[0001] This utility model relates to the field of brush cutter technology, and in particular to a brush cutter connecting plate assembly. Background Technology

[0002] Brush cutters are classified into electric and internal combustion engine types based on their power source. Internal combustion engine types are further divided into two-stroke and four-stroke gasoline engines. Based on their transmission method, they are classified into flexible shaft transmission and straight rod transmission. Based on their fuel supply method, they are classified into float type and pump-diaphragm type. There are two types of working heads for brush cutters: blades and nylon heads. Blades are used when the working environment is good and there are no stones or other debris, while nylon heads are safer when the working environment is poor.

[0003] Chinese utility model patent document CN218897580U discloses a connecting disc for a brush cutter, comprising a front connecting disc body, a first rear connecting disc body, and a second rear connecting disc body. A clamping sleeve is installed at the front end of the front connecting disc body, and a rubber shock-absorbing pad is provided between the front connecting disc body and the clamping sleeve. A first driven disc is installed at the tail end of the first rear connecting disc body, and a second driven disc is installed at the tail end of the second rear connecting disc body. Both the first and second driven discs have internal holes. A support sleeve, a first driven disc retaining ring, a first bearing, and a first bearing retaining ring are sequentially installed inside the first rear connecting disc body. The front end of the first driven disc passes through the support sleeve, the first bearing, and the first bearing retaining ring and is fixed by the first driven disc retaining ring. When the working intensity is low, the first rear connecting disc body can be selected, and the operating cost is relatively low while meeting the requirements. When the working environment is relatively harsh and the working intensity is high, the second rear connecting disc body is selected.

[0004] The existing brush cutter's connecting disc assembly has a transmission shaft spline and driven disc spline hole that are prone to wear, and the clutch friction plate and driven disc slide in contact, generating high heat that damages the clutch friction plate, driven disc, and bearings inside the connecting disc body. Therefore, we propose a connecting disc assembly for brush cutters. Summary of the Invention

[0005] To address the aforementioned problems, the present invention aims to provide a brush cutter connecting disc assembly, comprising a connecting disc body, a bearing housing assembly, a cooling fan, a driven disc, a driven disc drive shaft, a rubber damping sleeve, a clamping sleeve, and an oil seal. The assembly is characterized in that: a bearing housing assembly is installed at the lower interior of the connecting disc body; screws are installed on both sides of the bearing housing assembly; a cooling fan is installed below the bearing housing assembly; a driven disc drive shaft passes through the interior of the cooling fan; a driven disc is integrally fixedly installed below the driven disc drive shaft; a circular opening is provided on the end face of the driven disc; a strip-shaped opening for the connecting disc body is provided on the inner wall of the connecting disc body; an internal spline is provided inside the driven disc drive shaft; a rubber damping sleeve is installed at the upper interior of the connecting disc body; a clamping sleeve is installed inside the rubber damping sleeve; an oil seal is installed below the clamping sleeve; and a chamber is provided between the oil seal and the bearing housing assembly.

[0006] Optionally, the bearing housing assembly is bolted to the connecting disc body with screws, and the shape and size of the bearing housing assembly are partially matched with the internal shape of the connecting disc body.

[0007] Optionally, the strip-shaped openings of the connecting disc are evenly distributed along the outer surface of the connecting disc body.

[0008] Optionally, the interior of the chamber is filled with grease.

[0009] Optionally, the cooling fan is fixedly connected to the driven shaft of the passive disk, and the cooling fan rotates inside the main body of the connecting disk through the driven shaft of the passive disk.

[0010] Optionally, the bearing housing assembly further includes: a driven disc retainer ring, which is installed inside the bearing housing assembly, a second bearing is installed below the driven disc retainer ring, a first bearing is installed below the second bearing, and a bearing retainer ring is installed below the first bearing.

[0011] Optionally, the driven disc drive shaft passes through the interior of the bearing retaining ring, the first bearing, the second bearing, and the driven disc retaining ring in sequence, and the driven disc drive shaft is movably connected to the bearing housing through the first bearing and the second bearing.

[0012] Optionally, the clamping sleeve may further include a drive shaft assembly, which passes through the inside of the clamping sleeve, and the drive shaft assembly is connected to the driven disk drive shaft key via an internal spline of the driven disk.

[0013] Optionally, the connecting plate body may further include a clutch, which is installed below the connecting plate body, and an engine is installed below the clutch.

[0014] Optionally, the connecting disc body is threadedly connected to the engine, and the clutch is located inside the driven disc, with the clutch friction plate in close contact with the driven disc.

[0015] This utility model provides a connecting disc assembly for a brush cutter, which has the following advantages: The connecting disc assembly for the brush cutter is provided with a bearing housing assembly that is fixedly installed at the rear end of the connecting disc body by screws to form a cavity, and grease is injected into the cavity to solve the problem of easy wear of the spline of the drive shaft and the spline hole of the driven disc; at the same time, a high-speed rotating cooling fan is provided, and the cooling air flows sequentially from the opening of the driven disc, the cooling fan, and the strip opening of the connecting disc body to dissipate heat from the connecting disc body and improve the bearing life. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the main structure of this utility model;

[0017] Figure 2 This is a schematic diagram of the internal structure of the connecting disc body of this utility model;

[0018] Figure 3 This is a schematic diagram of the cooling fan structure of this utility model.

[0019] The annotations in the attached figures are explained as follows:

[0020] 1. Connecting disc body; 2. Drive shaft assembly; 3. Clutch; 4. Engine; 5. Rubber damping sleeve; 6. Clamping sleeve; 7. Oil seal; 8. Chamber; 9. Passive disc retaining ring; 10. Passive disc internal spline; 11. First bearing; 12. Bearing retaining ring; 13. Second bearing; 14. Cooling fan; 15. Passive disc; 16. Circular opening of passive disc; 17. Strip opening of connecting disc body; 18. Screw; 19. Bearing housing assembly; 20. Passive disc drive shaft. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments of the present utility model. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments.

[0022] In the description of this utility model, unless otherwise stated, "a plurality of" means two or more; the terms "upper," "lower," "left," "right," "inner," "outer," "front end," "rear end," "head," "tail," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings, and are only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model. In addition, the terms "first," "second," "third," etc., are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0023] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "connected" and "linked" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0024] Please refer to this embodiment. Figure 1 and Figure 3 A connecting disc assembly for a brush cutter includes a connecting disc body 1. A bearing housing assembly 19 is installed inside the lower part of the connecting disc body 1. Screws 18 are installed on both sides of the bearing housing assembly 19. The bearing housing assembly 19 is bolted to the connecting disc body 1 by the screws 18, and the shape and dimensions of the bearing housing assembly 19 partially match the interior of the connecting disc body 1. A cooling fan 14 is installed below the bearing housing assembly 19, and a driven disc drive shaft 20 passes through the interior of the cooling fan 14. The cooling fan 14 is fixedly connected to the driven disc drive shaft 20, and the cooling fan 14 achieves cooling through the driven disc drive shaft 20. The internal rotation of the connecting disc body 1 is achieved by the passive disc 15 being integrally fixedly installed below the passive disc drive shaft 20. The end face of the passive disc 15 is provided with a circular opening 16. The inner wall of the connecting disc body 1 is provided with a strip-shaped opening 17. The strip-shaped opening 17 is evenly distributed along the outer surface of the connecting disc body 1. A high-speed rotating cooling fan 14 is provided, and the cooling air flows sequentially from the passive disc opening, the cooling fan 14, and the strip-shaped opening 17 to dissipate heat from the connecting disc body 1, thereby improving the bearing life. The internal spline 10 of the passive disc is provided inside the passive disc drive shaft 20.

[0025] A passive disc retainer ring 9 is installed inside the bearing housing assembly 19. A second bearing 13 is installed below the passive disc retainer ring 9, a first bearing 11 is installed below the second bearing 13, and a bearing retainer ring 12 is installed below the first bearing 11. The passive disc drive shaft 20 passes through the bearing retainer ring 12, the first bearing 11, the second bearing 13, and the passive disc retainer ring 9 in sequence, and the passive disc drive shaft 20 is movably connected to the bearing housing assembly 19 through the first bearing 11 and the second bearing 13. The passive disc retainer ring 9 and the bearing retainer ring 12 effectively prevent grease from leaking through the bearing.

[0026] The clutch 3 is installed below the connecting plate body 1, and the engine 4 is installed below the clutch 3; the connecting plate body 1 is threadedly connected to the engine 4, and the clutch 3 is located inside the driven plate 15, and the friction plate of the clutch 3 is in close contact with the driven plate 15.

[0027] Please refer to this embodiment. Figure 1 and Figure 2 A connecting disc assembly for a brush cutter includes a rubber damping sleeve 5 installed inside the upper part of the connecting disc body 1, with a clamping sleeve 6 installed inside the rubber damping sleeve 5; a drive shaft assembly 2 passing through the clamping sleeve 6, the drive shaft assembly 2 being keyed to the driven disc drive shaft 20 via the driven disc internal spline 10; an oil seal 7 installed below the clamping sleeve 6, with a chamber 8 between the oil seal 7 and the bearing housing assembly 19; the chamber 8 being filled with grease; the bearing housing assembly 19 being fixedly installed at the rear end of the connecting disc body by screws 18 to form the chamber 8, and the chamber 8 being filled with grease, aims to solve the problem of easy wear of the drive shaft spline and the driven disc spline hole, and the setting of the oil seal 7 creates a closed space inside, preventing grease from entering the rubber damping sleeve 5 and the clamping sleeve 6 and leaking out.

[0028] In summary, the connecting disc assembly for the brush cutter operates as follows: First, the engine 4 drives the driven disc 15 via the dry clutch friction plate. The driven disc 15 then drives the driven disc drive shaft 20 to rotate via the first bearing 11 and the second bearing 13. The rotating driven disc drive shaft 20 then drives the drive shaft assembly 2 to rotate via the internal spline 10 of the driven disc, thus transmitting torque through the drive shaft assembly 2. Simultaneously, the rotation of the driven disc drive shaft 20 drives the cooling fan 14 to rotate. The cooling fan 14 guides air from inside the driven disc 15 through the circular opening 16 to the strip-shaped opening 17 of the connecting disc body, and then discharges it to the outside of the connecting disc body 1. This removes the heat generated by the friction between the clutch 3 and the driven disc 15, effectively cooling the disc and preventing heat from affecting the clutch 3, the driven disc 15, and the bearings inside the connecting disc body 1. Secondly, grease is injected into the chamber 8 to address the issue of easy wear between the drive shaft spline and the driven disc spline hole. The oil seal 7 creates a sealed environment in the chamber 8, preventing grease leakage.

[0029] The above are merely preferred embodiments of this utility model, but the scope of protection of this utility model is not limited thereto. Any equivalent substitutions or modifications made by those skilled in the art within the scope of the technology disclosed in this utility model, based on the technical solution and inventive concept of this utility model, should be included within the scope of protection of this utility model.

Claims

1. A brush cutter connecting disc assembly, comprising a connecting disc body (1), a bearing housing assembly (19), a cooling fan (14), a driven disc (15), a driven disc drive shaft (20), a rubber shock absorber sleeve (5), a clamping sleeve (6), and an oil seal (7), characterized in that: A bearing housing assembly (19) is installed inside the lower part of the connecting disc body (1). Screws (18) are installed on both sides of the bearing housing assembly (19). A cooling fan (14) is installed below the bearing housing assembly (19). A passive disk drive shaft (20) passes through the interior of the cooling fan (14). A passive disk (15) is integrally fixed below the passive disk drive shaft (20). A passive disk circular opening (16) is provided on the end face of the passive disk (15). A connecting disc strip opening (17) is opened on the inner wall of the connecting disc body (1). A passive disk internal spline (10) is opened inside the passive disk drive shaft (20). A rubber damping sleeve (5) is installed inside the upper part of the connecting disc body (1). A clamping sleeve (6) is installed inside the rubber damping sleeve (5). An oil seal (7) is installed below the clamping sleeve (6). A chamber (8) is provided between the oil seal (7) and the bearing housing assembly (19).

2. The brush cutter connecting plate assembly according to claim 1, characterized in that: The bearing housing assembly (19) is bolted to the connecting disc body (1) by screws (18), and the bearing housing assembly (19) partially matches the shape and size of the interior of the connecting disc body (1).

3. The brush cutter connecting plate assembly according to claim 1, characterized in that: The strip-shaped openings (17) of the connecting disk are evenly distributed along the outer surface of the connecting disk body (1).

4. The brush cutter connecting plate assembly according to claim 1, characterized in that: The interior of the chamber (8) is filled with grease.

5. The brush cutter connecting plate assembly according to claim 1, characterized in that: The cooling fan (14) is fixedly connected to the passive disk drive shaft (20), and the cooling fan (14) rotates inside the connecting disk body (1) through the passive disk drive shaft (20).

6. The brush cutter connecting plate assembly according to claim 1, characterized in that: The clamping sleeve (6) is also provided with a drive shaft assembly (2), which passes through the inside of the clamping sleeve (6) and is keyed to the drive shaft (20) of the driven disk via the internal spline (10) of the driven disk.

7. The brush cutter connecting plate assembly according to claim 1, characterized in that: The bearing housing assembly (19) is also provided with a passive disc retainer (9), which is installed inside the bearing housing assembly (19). A second bearing (13) is installed below the passive disc retainer (9), a first bearing (11) is installed below the second bearing (13), and a bearing retainer (12) is installed below the first bearing (11).

8. The brush cutter connecting plate assembly according to claim 7, characterized in that: The passive disk drive shaft (20) passes through the interior of the bearing retaining ring (12), the first bearing (11), the second bearing (13) and the passive disk retaining ring (9) in sequence. The passive disk drive shaft (20) is movably connected to the bearing housing assembly (19) through the first bearing (11) and the second bearing (13).

9. The brush cutter connecting plate assembly according to claim 1, characterized in that: The connecting plate body (1) is also provided with a clutch (3), which is installed below the connecting plate body (1), and an engine (4) is installed below the clutch (3).

10. The brush cutter connecting plate assembly according to claim 9, characterized in that: The connecting disc body (1) is connected to the engine (4) by threads. The clutch (3) is located inside the driven disc (15), and the friction plate of the clutch (3) is in close contact with the driven disc (15).

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