A direct-drive gearbox for a grass shredder

Abstract

This utility model discloses a direct-drive transmission gearbox for a grass shredder, belonging to the field of gear shifting and speed output. It includes a gearbox body and a transmission assembly. The transmission assembly includes a shift shaft, which is rotatably connected inside the gearbox body and extends to the outside of the gearbox body. A shaft one is rotatably connected inside the gearbox body, extending to the outside of the gearbox body. A gear one and a gear two are fixedly connected to the outside of the shaft one. A shaft three is rotatably connected inside the gearbox body, and a gear three and a gear four are fixedly connected to the outside of the shaft three. The key technical point is that this device adopts a direct-drive integrated design, simplifying unnecessary structures. It features simple structure, convenient operation, low failure rate, easy maintenance, and long service life. When replacement is required, it improves the replacement speed and ensures mechanical precision.

Description

Technical Field

[0001] This utility model relates to the field of gear shifting and transmission output, and in particular to a multi-purpose micro-tiller gearbox that can be used for both grass shredding and rotary tillage. Background Technology

[0002] The existing dual-purpose tillers for cutting grass and rotary tilling have unreasonable gearbox structure designs, mostly adopting a split design. When changing the needs of farmland operations, a large number of parts need to be replaced. Because the working environment of micro tillers is relatively harsh, it is very cumbersome for farmers to replace parts. Moreover, due to a lack of skills, the replaced parts may not meet the required technical standards, resulting in accelerated wear and tear and continuous malfunctions.

[0003] Therefore, we propose a direct-drive gearbox for a grass shredder. Utility Model Content

[0004] In order to overcome the shortcomings of the existing technology, the purpose of this utility model is to provide a direct-drive transmission gearbox for a grass shredder. The device adopts a direct-drive integrated design, which simplifies unnecessary structures and features simple structure, convenient operation, low failure rate, convenient maintenance, and long service life. When there is a need to change the gearbox, the replacement speed is improved and the mechanical precision is guaranteed.

[0005] The above-mentioned technical objective of this utility model is achieved through the following technical solution:

[0006] A direct-drive grass shredder transmission gearbox includes a gearbox body and a transmission assembly. The transmission assembly includes a shift shaft, which is rotatably connected inside the gearbox body and extends to the outside of the gearbox body. A shaft one is rotatably connected inside the gearbox body and extends to the outside of the gearbox body. A gear one and a gear two are fixedly connected to the outside of the shaft one. A shaft three is rotatably connected inside the gearbox body and a gear three and a gear four are fixedly connected to the outside of the shaft three. Gear two meshes with gear four. A shaft two is rotatably connected inside the gearbox body and extends to the outside of the gearbox body. A gear five and a gear six are slidably connected to the outside of the shaft two. A shift fork is fixedly connected to the outside of the shift shaft and is rotatably connected between gear five and gear six.

[0007] The operator can operate the shift shaft to make the shift fork slide on the double gear (gear five and gear six) on the second shaft, thereby selecting to mesh with different fixed gears, so that the second shaft has two gears and realizes the shifting of the second shaft. By designing gear two and gear four, and gear seven and gear four to be in constant mesh, and using a sliding double gear to change the power path, a multi-stage transmission can be arranged in a compact gearbox body.

[0008] The overall size and weight of the gearbox have been reduced, manufacturing costs have been lowered, making it easier to install on a lawnmower and more structurally compatible when directly coupled to the engine.

[0009] Furthermore, gear five and gear six are fixedly connected, and gear five and gear six constitute a double gear.

[0010] Furthermore, gear five meshes with gear one, and gear six meshes with gear three.

[0011] Furthermore, the gearbox housing is internally rotatably connected to a fourth shaft, which extends to the outside of the gearbox housing.

[0012] Furthermore, a gear seven is fixedly connected to the outside of the shaft four, and the gear seven meshes with the gear four.

[0013] In summary, this utility model has the following beneficial effects:

[0014] 1. This device adopts a direct-drive integrated design, which simplifies unnecessary structures and features simple structure, convenient operation, low failure rate, easy maintenance and upkeep, and long service life. When there is a need to replace the equipment, it improves the replacement speed and ensures mechanical precision.

[0015] 2. The operator can operate the shift shaft to make the shift fork slide on the double gear (gear five and gear six) on shaft two, thereby selecting the gear to mesh with different fixed gears, so that shaft two has two gears and realizes the shifting of shaft two. By designing gear two and gear four, and gear seven and gear four to be in constant mesh, and using a sliding double gear to change the power path, multi-stage transmission is arranged in a compact gearbox body, which reduces the overall size and weight of the gearbox, lowers the manufacturing cost, makes it easier to install on the grass shredder, and makes the structure more coordinated when directly connected to the engine. Attached Figure Description

[0016] Figure 1 This is a schematic diagram of the overall structure in this embodiment;

[0017] Figure 2 This is a schematic diagram of the transmission component in this embodiment;

[0018] Figure 3 This is a front view structural diagram of the transmission component in this embodiment;

[0019] Figure 4 This is a schematic diagram of the transmission component viewed from the right in this embodiment.

[0020] In the diagram, 1 is the gearbox body; 2 is the transmission assembly; 201 is the shift shaft; 202 is shaft one; 203 is gear one; 204 is gear two; 205 is shaft three; 206 is gear three; 207 is gear four; 208 is shaft two; 209 is gear five; 210 is gear six; 211 is the shift fork; 212 is shaft four; and 213 is gear seven. Detailed Implementation

[0021] The present invention will be further described in detail below with reference to the accompanying drawings.

[0022] Identical parts are indicated by the same reference numerals. It should be noted that the terms "front," "rear," "left," "right," "up," and "down" used in the following description refer to directions in the accompanying drawings, while the terms "bottom surface," "top surface," "inner," and "outer" refer to directions toward or away from the geometric center of a specific part, respectively.

[0023] Reference Figures 1-4 As shown, this is a preferred embodiment of a direct-drive grass shredder transmission gearbox, including a gearbox body 1 and a transmission assembly 2. The transmission assembly 2 includes a shift shaft 201, which is movably connected inside the gearbox body 1 and extends to the outside of the gearbox body 1. A shaft 202 is rotatably connected inside the gearbox body 1 and extends to the outside of the gearbox body 1. A gear 203 is fixedly connected to the outside of the shaft 202, and a gear 204 is fixedly connected to the outside of the shaft 202. A shaft is rotatably connected inside the gearbox body 1. Gear 206 is fixedly connected to the outside of shaft 205. Gear 207 is fixedly connected to the outside of shaft 205. Gear 204 meshes with gear 4207. Shaft 208 is rotatably connected inside gearbox 1 and extends to the outside of gearbox 1. Gear 5209 is slidably connected to the outside of shaft 208. Gear 6210 is slidably connected to the outside of shaft 208. Shift fork 211 is fixedly connected to the outside of shift shaft 201 and is movably connected between gear 5209 and gear 6210.

[0024] The operator can operate the shift shaft 201 to make the shift fork 211 move the double gear (gear five 209 and gear six 210) to slide on the shaft two 208, thereby selecting to mesh with different fixed gears, so that the shaft two 208 has two gears, realizing gear shifting of the shaft two 208, adjusting the speed and torque of the shaft two 208, which is suitable for rotary tillage of different forages. For example, when the output speed of the shaft two 208 is higher and the torque is relatively lower, it is suitable for light loads or dry forages. When the output speed of the shaft two 208 is lower and the torque is higher, it is suitable for heavy loads, wet forages or crushing hard materials.

[0025] By designing gear 204 and gear 4207, and gear 7213 and gear 4207 to be in constant mesh, and by using a sliding double gear to change the power path, a multi-stage transmission can be arranged in a compact gearbox body 1.

[0026] The overall size and weight of the gearbox have been reduced, manufacturing costs have been lowered, making it easier to install on a lawnmower and more structurally compatible when directly coupled to the engine.

[0027] Reference Figures 1-4 As shown, gear 5 209 and gear 6 210 are fixedly connected, and gear 5 209 and gear 6 210 form a double gear.

[0028] Reference Figures 1-4 As shown, gear 5 209 meshes with gear 1 203, and gear 6 210 meshes with gear 3 206.

[0029] Reference Figures 1-4 As shown, a shaft 212 is rotatably connected inside the gearbox body 1, and the shaft 212 extends to the outside of the gearbox body 1.

[0030] Reference Figures 1-4 As shown, gear 213 is fixedly connected to the outside of shaft 4 212, and gear 213 meshes with gear 4 207.

[0031] Shaft 1 202 is connected to the output end of the engine. The engine drives shaft 1 202 to rotate, which in turn drives gear 1 203 and gear 2 204 to rotate. Gear 2 204 drives gear 4 207, which meshes with it, to rotate. Gear 4 207 drives gear 7 213, which meshes with it, to rotate, which in turn drives shaft 4 212 to rotate.

[0032] The gearbox not only provides output from shaft 208, but also output from shaft 412. Shaft 208 and shaft 412 can output power simultaneously, one for driving the main body of the grass shredder, and the other for driving other accessories, such as feed rollers and fans.

[0033] Specific implementation process: Shaft 1 202 is connected to the output end of the engine. The engine drives shaft 1 202 to rotate, which in turn drives gear 1 203 and gear 2 204 to rotate. Gear 2 204 drives gear 4 207, which meshes with it, to rotate. Gear 4 207 drives gear 7 213, which meshes with it, to rotate, which in turn drives shaft 4 212 to rotate.

[0034] The gearbox not only provides output from shaft 208, but also output from shaft 412. Shaft 208 and shaft 412 can output power simultaneously, one to drive the main body of the grass shredder, and the other to drive other accessories, such as feed rollers, blowers, etc.

[0035] The operator can operate the shift shaft 201 to make the shift fork 211 move the double gear (gear five 209 and gear six 210) to slide on the shaft two 208, so that gear five 209 meshes with gear one 203, or gear six 210 meshes with gear three 206, so that the shaft two 208 has two gears, realizing the shifting of the shaft two 208, adjusting the speed and torque of the shaft two 208, which is suitable for rotary tillage of different forages. For example, when the output speed of the shaft two 208 is higher and the torque is relatively lower, it is suitable for light loads or dry forages. When the output speed of the shaft two 208 is lower and the torque is higher, it is suitable for heavy loads, wet forages or crushing hard materials.

[0036] By designing gear 204 and gear 4207, and gear 7213 and gear 4207 to be in constant mesh, and by using a sliding double gear to change the power path, a multi-stage transmission can be arranged in a compact gearbox body 1.

[0037] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claims. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A direct drive grass chopper transmission gearbox characterised in that: The transmission includes a gearbox body (1) and a transmission assembly (2). The transmission assembly (2) includes a shift shaft (201), which is movably connected inside the gearbox body (1) and extends to the outside of the gearbox body (1). A shaft 1 (202) is rotatably connected inside the gearbox body (1) and extends to the outside of the gearbox body (1). A gear 1 (203) is fixedly connected to the outside of the shaft 1 (202), and a gear 2 (204) is fixedly connected to the outside of the shaft 1 (202). A shaft 3 (205) is rotatably connected inside the gearbox body (1). A gear three (206) is fixedly connected to the gearbox body (1). A gear four (207) is fixedly connected to the outside of the gearbox body (205). The gear two (204) meshes with the gear four (207). A shaft two (208) is rotatably connected inside the gearbox body (1). The shaft two (208) extends to the outside of the gearbox body (1). A gear five (209) is slidably connected to the outside of the shaft two (208). A gear six (210) is slidably connected to the outside of the shaft two (208). A shift fork (211) is fixedly connected to the outside of the shift shaft (201). The shift fork (211) is movably connected between the gear five (209) and the gear six (210).

2. A direct-coupled grass chopper transmission gearbox according to claim 1, characterised in that: Gear 5 (209) and gear 6 (210) are fixedly connected, and gear 5 (209) and gear 6 (210) constitute a double gear.

3. A direct-coupled grass chopper transmission gearbox according to claim 1, characterised in that: Gear 5 (209) meshes with gear 1 (203), and gear 6 (210) meshes with gear 3 (206).

4. A direct-coupled grass chopper transmission gearbox according to claim 1, characterised in that: The gearbox body (1) is internally rotatably connected to a shaft four (212), which extends to the outside of the gearbox body (1).

5. The direct-drive transmission gearbox for a hay shredder according to claim 4, characterized in that: The shaft four (212) is externally fixedly connected to a gear seven (213), which meshes with the gear four (207).

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