Direct connection mechanism for garden mechanical power and gearbox

Abstract

The utility model discloses a garden machinery power and gearbox direct connection mechanism which comprises a driving shaft, a driven shaft and a shaft sleeve, the shaft sleeve is connected with the driving shaft and the driven shaft and drives the driving shaft and the driven shaft, the two ends of the shaft sleeve are provided with special-shaped holes, and the end of the driving shaft and the end of the driven shaft are provided with inserting ends matched with the special-shaped holes in an inserting mode. The driving shaft and the driven shaft are in transmission in a shaft sleeve direct connection mode, circumferential linkage is achieved through insertion matching of the special-shaped holes, compared with a traditional transmission mode depending on a belt or a chain wheel or a gear, the direct connection mode reduces the middle transmission link, the structure is greatly simplified, cost caused by numerous parts is reduced, and the transmission efficiency is improved. And the positioning precision of power transmission is also improved.

Description

Technical Field

[0001] This utility model relates to the field of garden machinery, and in particular to a direct connection mechanism between the power source and the gearbox of garden machinery. Background Technology

[0002] Garden machinery refers to various mechanical equipment used for garden construction, maintenance, and beautification.

[0003] In the field of garden machinery, numerous transmission structures are involved. Currently, many garden machines use belts, sprockets, and gear drives to connect the power components and the gearbox. Among these, belt drives are prone to slippage and require frequent maintenance; sprocket drives are noisy, complex to maintain, and may pollute the environment; gear drives are costly and complex, requiring further improvement and refinement. Utility Model Content

[0004] To further simplify the structure and reduce the number of parts, this application provides a direct-drive mechanism for power and gearbox in garden machinery.

[0005] This application provides a direct-drive mechanism for power and gearbox in garden machinery, employing the following technical solution:

[0006] A direct-drive mechanism for power and gearbox of garden machinery includes a drive shaft, a driven shaft, and a bushing. The bushing connects the drive shaft and the driven shaft and drives both of them. The bushing has irregular holes at both ends. The ends of the drive shaft and the driven shaft have plug-in ends that are adapted to the irregular holes.

[0007] Optionally, the irregular hole is a flat rectangular hole or a polygonal hole.

[0008] Optionally, it also includes a housing, which comprises symmetrically arranged half-shells that are detachably connected to each other, and the bushing and driven shaft are located inside the housing.

[0009] Optionally, a power component is installed at one end of the housing. The power component includes a power end cover. One end of the drive shaft passes through the power end cover and extends into the housing to connect with a bushing. The power end cover is detachably connected to the housing.

[0010] Optionally, the power end cover is provided with a first bearing to support the drive shaft, and the housing is provided with a second bearing to support the driven shaft.

[0011] Optionally, one end of the housing has a plug-in portion, and one end of the power end cover has a plug-in interface that plugs into the plug-in portion, wherein the plug-in portion and the plug-in interface are in a straight-mouth fit.

[0012] Optionally, the irregular hole end face has an inclined guide surface.

[0013] Optionally, a gap is left at the insertion point of the bushing with the drive shaft and the driven shaft.

[0014] Optionally, a reserved space is left inside the bushing between the ends of the corresponding drive shaft and driven shaft.

[0015] Optionally, one end of the housing is connected and fixed to the power end cover by screws. One end of the housing has a mounting hole for screw installation, and one side of the mounting hole has a through opening, the opening being larger than or equal to the diameter of the screw.

[0016] In summary, this application includes at least one of the following beneficial technical effects:

[0017] 1. The drive shaft and driven shaft are directly connected by bushings for transmission. Circumferential linkage is achieved through the insertion and mating of irregularly shaped holes. Compared with traditional methods relying on belts, sprockets, or gears, this direct connection method reduces intermediate transmission links, greatly simplifies the structure, reduces costs due to numerous parts, and improves the positioning accuracy of power transmission. 2. The gap between the bushing and the shaft can buffer vibrations between components, thereby reducing noise. It also allows components a certain degree of self-adaptation during operation, better coping with minor deviations caused by power transmission, ensuring the stability of power transmission, and improving the overall performance and work efficiency of the garden machinery.

[0018] 3. The straight-mouth fit between the power end cap and the outer shell can serve as a pre-positioning mechanism, facilitating subsequent connection and fixation with screws;

[0019] 4. The drive shaft and driven shaft are accurately positioned on the power unit and the housing respectively by bearings. The bearings not only play a positioning role, but also ensure the flexible rotation of the shafts. Attached Figure Description

[0020] Figure 1 This is an overall structural diagram of an embodiment of this application.

[0021] Figure 2 This is a structural diagram of the embodiment of this application after the half-shell is hidden.

[0022] Figure 3 This is a cross-sectional view of an embodiment of this application.

[0023] Figure 4 It is a structural diagram of the driving shaft, driven shaft, and bushing.

[0024] Explanation of reference numerals in the attached figures:

[0025] 1. Outer shell; 2. Power end cover; 3. Drive shaft; 4. Driven shaft; 5. Bushing; 6. Irregular hole; 7. Plug-in end; 8. Half shell; 9. Screw; 10. Plug-in part; 11. Plug-in interface; 12. Mounting hole; 13. Opening; 14. First bearing; 15. Second bearing; 16. Guide surface; 17. Reserved space. Detailed Implementation

[0026] The following is in conjunction with the appendix Figure 1-4 This application will be described in further detail.

[0027] A direct-drive mechanism for garden machinery power and gearbox, such as Figure 1 and Figure 2 As shown, it includes a housing 1, a power end cover 2, a drive shaft 3, a driven shaft 4, and a bushing 5. The housing 1 is the gearbox housing. The power end cover 2 is detachably connected to one end of the housing 1. The drive shaft 3 is rotatably connected to the power end cover 2, with one end of the drive shaft 3 penetrating into the housing 1. The driven shaft 4 is rotatably connected into the housing 1. The bushing 5 is located inside the housing 1 and its two ends are respectively connected to the drive shaft 3 and the driven shaft 4. The circumferential linkage between the drive shaft 3 and the driven shaft 4 is realized through the connection of the bushing 5, and the power is ultimately transmitted.

[0028] like Figure 3 and Figure 4 As shown, irregularly shaped holes 6 for insertion are provided at both ends of the bushing 5. In this embodiment, the irregularly shaped holes 6 are flat square holes. In other embodiments, the irregularly shaped holes 6 can also be polygonal holes, such as square holes, hexagonal holes, etc. At the same time, insertion ends 7 that are adapted to the shape of the irregularly shaped holes 6 are provided at one end of the drive shaft 3 and the driven shaft 4. The insertion end 7 of the drive shaft 3 is inserted into one end of the bushing 5, and the insertion end 7 of the driven shaft 4 is inserted into the other end of the bushing 5, so that circumferential linkage can realize the transmission of power. In actual use, the output power of the drive shaft 3 is transmitted to the driven shaft 4 in the gearbox.

[0029] The drive shaft 3 and the driven shaft 4 are directly connected by a bushing 5 for transmission. The circumferential linkage is achieved by the insertion and engagement of the irregular hole 6. Compared with the traditional method of transmission by belt, sprocket or gear, this direct connection method reduces intermediate transmission links, greatly simplifies the structure, reduces the cost caused by the large number of parts, and improves the positioning accuracy of power transmission.

[0030] like Figure 1 and Figure 2 As shown, the outer shell 1 includes two symmetrically arranged half-shells 8, which are detachably connected. The half-shells 8 are fixed by screws 9. Multiple screws 9 are distributed at intervals along the length of the outer shell 1, so that the interior can be easily inspected and replaced after the half-shells 8 are disassembled.

[0031] like Figure 1 and Figure 3 As shown, one end of the power end cap 2 is detachably connected to the outer shell 1 by screws 9. The end of the outer shell 1 facing the power end cap 2 has a plug-in part 10, and the end of the power end cap 2 has a plug interface 11 that plugs into the plug-in part 10. The plug-in part 10 and the plug interface 11 are in a straight-mouth fit, which can play a role in pre-positioning and facilitates subsequent connection and fixation by screws 9. In addition, a mounting hole 12 for screws 9 is provided on the end of the outer shell 1. One side of the mounting hole 12 has a through opening 13. The width of the opening 13 is larger than the diameter of the screw 9. The design of the opening 13 facilitates the installation and removal of the screw 9, and the opening 13 allows for a certain degree of fine adjustment of the screw 9 installation position, so it can still be used when the hole position is slightly mismatched.

[0032] like Figure 2 and Figure 3 As shown, a first bearing 14 is provided on the power end cover 2 to support the drive shaft 3, and a second bearing 15 is provided inside the housing 1 to support the driven shaft 4. The drive shaft 3 and the driven shaft 4 are accurately positioned on the power end cover 2 and the housing 1 respectively by the bearings. The bearings not only play a positioning role, but also ensure the flexible rotation of the shafts.

[0033] like Figure 4 As shown, there is an inclined guide surface 16 at the end face of the irregular hole 6. The guide surface 16 can play a guiding role. When the insertion is made, the guide surface 16 can guide the insertion end 7 to enter the irregular hole 6 better, thereby improving the accuracy and smoothness of the insertion.

[0034] In addition, a slight gap is left at the insertion and mating of the bushing 5 with the drive shaft 3 and the driven shaft 4. This gap can buffer the vibration between the components, thereby reducing noise. It also allows the components to have a certain self-adaptive space during operation, better cope with the small deviations caused by power transmission, ensure the stability of power transmission, and improve the overall performance and work efficiency of the garden machinery.

[0035] like Figure 3 As shown, a reserved space 17 is left inside the bushing 5 between the ends of the driving shaft 3 and the driven shaft 4. This ensures that the ends of the driving shaft 3 and the driven shaft 4 will contact each other after insertion, which will affect the insertion effect. The sufficient reserved space 17 can accommodate driving shafts 3 and driven shafts 4 with various insertion depths 7, thus improving the applicability of the bushing 5.

[0036] The above are all preferred embodiments of this application, and are not intended to limit the scope of protection of this application. Therefore, all equivalent changes made in accordance with the structure, shape and principle of this application should be covered within the scope of protection of this application.

Claims

1. A direct-drive mechanism for power and gearbox in garden machinery, characterized in that: It includes a drive shaft (3), a driven shaft (4) and a bushing (5). The bushing (5) connects the drive shaft (3) and the driven shaft (4) and drives both of them. The bushing (5) has irregular holes (6) at both ends. The ends of the drive shaft (3) and the driven shaft (4) have plug-in ends (7) that are adapted to the irregular holes (6).

2. The garden machinery power and gearbox direct connection mechanism according to claim 1, characterized in that: The irregular hole (6) is a flat square hole or a polygonal hole.

3. The garden machinery power and gearbox direct connection mechanism according to claim 2, characterized in that: It also includes a housing (1), which includes symmetrically arranged half-shells (8) that are detachably connected to each other, and the bushing (5) and driven shaft (4) are located inside the housing (1).

4. The garden machinery power and gearbox direct connection mechanism according to claim 3, characterized in that: A power component is installed at one end of the outer casing (1). The power component includes a power end cover (2). One end of the drive shaft (3) passes through the power end cover (2) and extends into the outer casing (1) to connect with the bushing (5). The power end cover (2) and the outer casing (1) are detachably connected.

5. The garden machinery power and gearbox direct connection mechanism according to claim 4, characterized in that: The power end cover (2) is provided with a first bearing (14) to support the drive shaft (3), and the housing (1) is provided with a second bearing (15) to support the driven shaft (4).

6. The garden machinery power and gearbox direct connection mechanism according to claim 4, characterized in that: One end of the outer shell (1) has a plug-in portion (10), and one end of the power end cover (2) has a plug-in interface (11) that plugs into the plug-in portion (10). The plug-in portion (10) and the plug-in interface (11) are in a straight-mouth fit.

7. The garden machinery power and gearbox direct connection mechanism according to claim 1, characterized in that: The irregular hole (6) has an inclined guide surface (16) on its end face.

8. The garden machinery power and gearbox direct connection mechanism according to claim 1, characterized in that: There is a gap at the insertion point of the bushing (5) with the drive shaft (3) and the driven shaft (4).

9. The garden machinery power and gearbox direct connection mechanism according to claim 1, characterized in that: The bushing (5) has a reserved space (17) between the ends of the drive shaft (3) and the driven shaft (4).

10. The garden machinery power and gearbox direct connection mechanism according to claim 4, characterized in that: One end of the outer casing (1) is connected and fixed to the power end cover (2) by screws (9). One end of the outer casing (1) has a mounting hole (12) for mounting the screws (9). One side of the mounting hole (12) has a through opening (13), which is greater than or equal to the diameter of the screws (9).

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