Gear transmission assembly for mini-tiller

Abstract

The utility model relates to the field of mini-tillers, and discloses a gear transmission assembly for a mini-tiller, which comprises an input shaft, an intermediate shaft and an output shaft, and a driving duplicate gear capable of moving along the axial direction is arranged on the input shaft; a first transmission gear, a second transmission gear, a third transmission gear and a first speed regulation duplicate gear are arranged on the intermediate shaft; a driven gear and a second speed regulation duplicate gear are arranged on the output shaft; the driving duplicate gear can be meshed with the first transmission gear, the second transmission gear, the first speed regulation large gear and the second speed regulation large gear are meshed, the first speed regulation small gear is constantly meshed with the second speed regulation large gear, the second speed regulation small gear is constantly meshed with the second transmission gear, and the third transmission gear is constantly meshed with the driven gear. By improving the gear set, the mini-tiller can achieve three forward gears and one reverse gear, and the problems that in the prior art, a mini-tiller is only provided with one forward gear and one neutral gear, the forward speed is fixed, and efficiency improvement of cultivation work is not facilitated are solved.

Description

Technical Field

[0001] The utility model relates to the field of micro-tillage machines, in particular to a gear transmission assembly for micro-tillage machines. Background Art

[0002] The micro-tillage machine is a small agricultural machine, mainly used for cultivation in small or irregular terrains such as small-scale farmland, orchards, greenhouses, nurseries, tea gardens, hillsides, etc. It integrates multiple functions such as tillage, ditching, sowing, fertilization, weeding, and transportation, which greatly improves the efficiency of farmers' operations on small plots and reduces labor intensity.

[0003] In order to adapt to different terrains of different farmlands, existing micro-tillage machines are generally equipped with transmissions. However, due to the size and structural design limitations of the micro-tillage machines, the existing transmissions are required to be small in size. Therefore, the space inside the transmission for installing the gear set is limited, which limits the gear position of the transmission in the prior art and can only provide two forward gears, resulting in the micro-tillage machine's travel mode and speed being limited, which is not conducive to improving the efficiency of farming operations and also limits the scope of use. Utility Model Content

[0004] The utility model is intended to provide a gear transmission assembly for a micro-tillage machine, so as to solve the problem that the micro-tillage machine transmission can only provide two forward gears in a limited space in the prior art, resulting in the limitation of the travel mode and speed of the micro-tillage machine.

[0005] To achieve the above-mentioned purpose, the utility model adopts the following technical scheme: a gear transmission assembly for a micro-tillage machine, comprising an input shaft, an intermediate shaft and an output shaft, the input shaft is provided with an active double gear that can move in the axial direction, the active double gear comprises an active double pinion and an active double gear; a first transmission gear, a second transmission gear and a third transmission gear are fixed on the intermediate shaft, a first speed regulating double gear is also sleeved on the intermediate shaft, the first speed regulating double gear comprises a first speed regulating pinion and a first speed regulating gear; a driven gear is fixed on the output shaft, a second speed regulating double gear is also sleeved on the output shaft, the second speed regulating double gear comprises a second speed regulating pinion and a second speed regulating gear;

[0006] The active double pinion can be meshed with the first transmission gear, the active double gear can be meshed with the second transmission gear, the first speed regulating gear and the second speed regulating gear respectively, the first speed regulating pinion is constantly meshed with the second speed regulating gear, the second speed regulating pinion is constantly meshed with the second transmission gear, and the third transmission gear is constantly meshed with the driven gear.

[0007] Preferably, as an improvement, the diameters of the first transmission gear, the second transmission gear and the third transmission gear decrease in sequence, and the second transmission gear and the third transmission gear are respectively located on the left and right sides of the first transmission gear.

[0008] Preferably, as an improvement, the first speed regulating double gear is located on a side of the second transmission gear away from the first transmission gear.

[0009] Preferably, as an improvement, the diameter of the first speed regulating gear is the same as that of the second transmission gear.

[0010] Preferably, as an improvement, a spline section is machined on the input shaft, and the active duplex gear is spline-connected to the spline section of the input shaft.

[0011] Preferably, as an improvement, the active double gear is an I-shaped gear, and the shift fork of the micro-tiller transmission is arranged in the middle of the active double gear.

[0012] The principle and advantages of this scheme are: in actual application, the input shaft serves as the power input end, and the active double gear on it serves as the transmission part for power input. Under the drive of the micro-tiller transmission shift fork, the active double gear can move axially along the spline of the input shaft, and then mesh with different gears to transmit power. The intermediate shaft serves as the mounting support of the gear set, and the first transmission gear, the second transmission gear, the third transmission gear, the first speed regulating double gear on it and the second speed regulating double gear on the output shaft together form a gear set, in which the first transmission gear, the second transmission gear, the first speed regulating large gear, and the second speed regulating large gear in the gear set serve as power input parts, the first speed regulating small gear and the second speed regulating small gear serve as power transmission parts, and the third transmission gear serves as power output part. The output shaft serves as the power output end, and the driven gear on it meshes with the third transmission gear as the power input end, and the power is output by installing a sprocket on the output shaft. This solution can achieve three forward gears and one reverse gear through the above structure within the same confined space as the prior art, so that the micro-tillage machine can operate at three different forward speeds when working in the field, meeting different farming efficiency requirements, having a larger range of use, and having a reverse gear function, so that the micro-tillage machine can flexibly reverse and turn around in the field, making the operation more efficient and convenient. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] Figure 1 It is a left axonometric view of an embodiment of the utility model.

[0014] Figure 2 It is a right axonometric view of an embodiment of the utility model. DETAILED DESCRIPTION

[0015] The following is further described in detail through specific implementation methods:

[0016] The reference numerals in the drawings of the specification include: input shaft 1, intermediate shaft 2, output shaft 3, active double gearwheel 4, active double pinion 5, first transmission gear 6, second transmission gear 7, third transmission gear 8, first speed regulating pinion 9, first speed regulating gearwheel 10, second speed regulating pinion 11, second speed regulating gearwheel 12, driven gear 13, shift fork 14.

[0017] The embodiment is basically as shown in the attached Figure 1 , Figure 2 As shown: A gear transmission assembly for a micro-tiller includes an input shaft 1, an intermediate shaft 2 and an output shaft 3. The input shaft 1 is provided with an active double gear that can move in the axial direction. The input shaft 1 is processed with a spline section, and the active double gear is spline-connected to the spline section of the input shaft 1. The active double gear is an I-shaped gear including an active double pinion 5 and an active double gear 4 at both ends. The shift fork 14 of the micro-tiller transmission is clamped in the middle of the active double gear. The first transmission gear 6, the second transmission gear 7 and the third transmission gear 8 are key-connected and fixed on the intermediate shaft 2. The diameters of the first transmission gear 6, the second transmission gear 7 and the third transmission gear 8 decrease in sequence. The second transmission gear 7 and the third transmission gear 8 are respectively located on the left and right sides of the first transmission gear 6. The intermediate shaft 2 is also provided with a first speed regulating double gear in an empty sleeve, and the first speed regulating double gear is located on the side of the second transmission gear 7 away from the first transmission gear 6. The first speed regulating double gear includes a first speed regulating pinion 9 and a first speed regulating gear 10, and the first speed regulating gear 10 has the same diameter as the second transmission gear 7. A driven gear 13 is keyed and fixed on the output shaft 3, and a second speed regulating double gear is also sleeved on the output shaft 3, and the second speed regulating double gear includes a second speed regulating pinion 11 and a second speed regulating gear 12.

[0018] The active double pinion 5 can be meshed with the first transmission gear 6, the active double gear 4 can be meshed with the second transmission gear 7, the first speed regulating gear 10, and the second speed regulating gear 12 respectively, the first speed regulating pinion 9 is constantly meshed with the second speed regulating gear 12, the second speed regulating pinion 11 is constantly meshed with the second transmission gear 7, and the third transmission gear 8 is constantly meshed with the driven gear 13.

[0019] The idle sleeve in this embodiment means that the first speed regulating double gear is directly sleeved on the intermediate shaft 2, and the second speed regulating double gear is directly sleeved on the output shaft 3, the first speed regulating double gear can rotate freely on the intermediate shaft 2, and the rotation of the first speed regulating double gear under the action of external force will not directly drive the rotation of the intermediate shaft 2. Similarly, the second speed regulating double gear can rotate freely on the output shaft 3, and the rotation of the second speed regulating double gear under the action of external force will not directly drive the rotation of the output shaft 3.

[0020] The specific implementation process is as follows: the input shaft 1 is used as the power input end, and the active double gear on it is used as the transmission part for power input. Under the drive of the micro-tiller transmission shift fork 14, the active double gear can move axially along the spline of the input shaft 1, and then mesh with different gears to transmit power. The intermediate shaft 2 is used as the mounting support of the gear set. The first transmission gear 6, the second transmission gear 7, the third transmission gear 8, the first speed regulating double gear on it and the second speed regulating double gear on the output shaft 3 form a gear set. The first transmission gear 6, the second transmission gear 7, the first speed regulating large gear 10, and the second speed regulating large gear 12 in the gear set are used as power input parts, the first speed regulating small gear 9 and the second speed regulating small gear 11 are used as power transmission parts, and the third transmission gear 8 is used as a power output part. The output shaft 3 is used as the power output end, and the driven gear 13 on it meshes with the third transmission gear 8 as the power input end. The power is output by installing a sprocket on the output shaft 3. Through the above structure, this scheme can achieve three forward gears and one reverse gear during application:

[0021] The active double pinion 5 meshes with the first transmission gear 6 as the power input end. The power is transmitted to the intermediate shaft 2 after being decelerated by the first transmission gear 6, and then transmitted to the driven gear 13 through the third transmission gear 8 on the intermediate shaft 2. After being decelerated again at the driven gear 13, it is transmitted to the output shaft 3. At this time, it is the forward gear one of the two-stage deceleration.

[0022] The active double gear 4 meshes with the second transmission gear 7 as the power input end. The power is transmitted to the intermediate shaft 2 after being decelerated by the second transmission gear 7, and then transmitted to the driven gear 13 through the third transmission gear 8 on the intermediate shaft 2. After being decelerated again at the driven gear 13, it is transmitted to the output shaft 3. At this time, it is the forward gear position 2 with two-stage deceleration. However, since the transmission ratio between the active double gear 4 and the second transmission gear 7 is smaller than the transmission ratio between the active double pinion 5 and the first transmission gear 6, the transmission ratio of the assembly at this time is smaller than the gear position 1.

[0023] The active double gear 4 meshes with the first speed regulating gear 10 as the power input end, and the power is transmitted to the first speed regulating pinion 9 through the first speed regulating gear 10, and then to the second speed regulating pinion 12 through the first speed regulating pinion 9, and then to the second speed regulating pinion 11 from the second speed regulating gear 12, and then to the second transmission gear 7 through the second speed regulating pinion 11, and then to the intermediate shaft 2 through the second transmission gear 7, and then to the driven gear 13 through the third transmission gear 8 on the intermediate shaft 2, and then to the output shaft 3 at the driven gear 13. The first deceleration is completed at the first speed regulating gear 10, the second deceleration is completed at the second speed regulating gear 12, the third deceleration is completed at the second transmission gear 7, and the fourth deceleration is completed at the driven gear 13, which is the forward gear position 3 of the four-stage deceleration.

[0024] When the active double gear 4 meshes with the second speed regulating gear 12 as the power input end, the power is transmitted from the second speed regulating gear 12 to the second speed regulating pinion 11, then to the second transmission gear 7 through the second speed regulating pinion 11, then to the intermediate shaft 2 through the second transmission gear 7, and then to the driven gear 13 through the third transmission gear 8 on the intermediate shaft 2, and then to the output shaft 3 at the driven gear 13. At this time, the first deceleration is completed at the second speed regulating gear 12, the second deceleration is completed at the second transmission gear 7, and the third deceleration is completed at the driven gear 13. Since one stage of transmission is reduced, the rotation direction of the power acting on the output shaft 3 changes, and this is the reverse gear of the three-stage deceleration.

[0025] In this way, three forward gears and one reverse gear can be achieved during the application process, so that the micro-tillage machine can operate at three different forward speeds when working in the field, meeting different farming efficiency requirements, with a larger range of use, and with a reverse gear function, so that the micro-tillage machine can flexibly reverse and turn around in the field, making the operation more efficient and convenient.

[0026] The above is only an embodiment of the utility model, and the common knowledge such as the known specific technical solutions and / or characteristics in the solution is not described in detail here. It should be pointed out that for those skilled in the art, without departing from the technical solution of the utility model, several deformations and improvements can be made, which should also be regarded as the protection scope of the utility model, and these will not affect the effect of the implementation of the utility model and the practicality of the patent. The scope of protection required by this application shall be based on the content of its claims, and the specific implementation methods and other records in the specification can be used to interpret the content of the claims.

Claims

1. A gear transmission assembly for a micro-tillage machine, characterized in that: It includes an input shaft, an intermediate shaft and an output shaft. The input shaft is provided with an active double gear that can move in the axial direction. The active double gear includes an active double pinion and an active double gear. The intermediate shaft is fixed with a first transmission gear, a second transmission gear and a third transmission gear. The intermediate shaft is also provided with a first speed regulating double gear. The first speed regulating double gear includes a first speed regulating pinion and a first speed regulating gear. The output shaft is fixed with a driven gear. The output shaft is also provided with a second speed regulating double gear. The second speed regulating double gear includes a second speed regulating pinion and a second speed regulating gear. The active double pinion can be meshed with the first transmission gear, the active double gear can be meshed with the second transmission gear, the first speed regulating gear and the second speed regulating gear respectively, the first speed regulating pinion is constantly meshed with the second speed regulating gear, the second speed regulating pinion is constantly meshed with the second transmission gear, and the third transmission gear is constantly meshed with the driven gear.

2. The gear transmission assembly for a micro-tillage machine according to claim 1, characterized in that: The diameters of the first transmission gear, the second transmission gear and the third transmission gear decrease in sequence, and the second transmission gear and the third transmission gear are respectively located on the left and right sides of the first transmission gear.

3. The gear transmission assembly for a micro-tillage machine according to claim 2, characterized in that: The first speed regulating double gear is located at a side of the second transmission gear away from the first transmission gear.

4. The gear transmission assembly for a micro-tillage machine according to claim 3, characterized in that: The diameters of the first speed regulating gear and the second transmission gear are the same.

5. The gear transmission assembly for a micro-tillage machine according to claim 4, characterized in that: A spline section is processed on the input shaft, and the active duplex gear is spline-connected to the spline section of the input shaft.

6. The gear transmission assembly for a micro-tillage machine according to claim 5, characterized in that: The active double gear is an I-shaped gear, and the shift fork of the micro-tillage machine transmission is arranged in the middle of the active double gear.

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