Gearbox for field returning machine

Abstract

The utility model relates to the technical field of field returning machines, in particular to a gearbox for a field returning machine, which comprises a complete machine shell, a gearbox shell is mounted on the right side of the complete machine shell, a high-speed driving gear is arranged in the gearbox shell, a driving spline shaft is arranged in the high-speed driving gear, and a transmission shaft is arranged in the driving spline shaft. A low-speed driving gear is further arranged at the position, close to the front face, of the connecting position of the driving spline shaft, a slidable high-low-speed integrated gear is arranged at the position, located on the left side, of the connecting position of the high-speed driving gear, and the reasonable transmission mode that the driven spline shaft transmits power to the operation shaft through a chain or a belt enables the operation cutter to rotate at a high speed or a low speed. By means of the transmission mode, power can be efficiently transmitted, it is guaranteed that the operation cutter can keep good cutting force and smashing effect at different speeds, and therefore the efficiency and quality of farmland operation are greatly improved.

Description

Technical Field

[0001] The utility model relates to the technical field of rotary tillers, in particular to a gearbox for a rotary tiller. Background Technique

[0002] A transmission, also known as a gearbox, is a mechanism used to change the speed and torque from the engine. It can fix or shift gears to change the transmission ratio between the output shaft and the input shaft. The transmission consists of a speed-changing transmission mechanism and a control mechanism. Some vehicles also have a power take-off mechanism. Most of the transmission mechanisms use ordinary gear transmissions, and some use planetary gear transmissions. The ordinary gear transmission speed-changing mechanism generally uses sliding gears and synchronizers, etc.

[0003] In the process of the rapid development of modern agriculture today, the high efficiency and high quality of farmland operations have become crucial pursuit goals. Straw returning to the field as an important agricultural operation link plays a key role in improving soil structure and increasing soil fertility. However, traditional rotary tillers have many deficiencies in practical applications.

[0004] Traditional rotary tillers usually have a single speed and cannot be flexibly adjusted according to different farmland conditions, such as soil texture, types and densities of crop straws, etc., and different operation requirements. This not only limits the adaptability of operations but may also lead to low operation efficiency or poor operation quality. For example, when facing hard soil and dense straws, a lower speed is required to ensure that the rotary tiller can effectively crush the straws and mix them fully with the soil, while in the case of softer soil and sparse straws, a higher speed can be adopted to improve operation efficiency. Content of the Utility Model

[0005] The purpose of the utility model is to provide a gearbox for a rotary tiller to solve the above technical problems.

[0006] To achieve the above purpose, the utility model adopts the following technical solutions:

[0007] A gearbox for a rotary tiller includes an integral housing. A gearbox housing is installed on the right side of the integral housing. Inside the gearbox housing, there is a high-speed driving gear. Inside the high-speed driving gear, there is a driving spline shaft. A low-speed driving gear is also provided at the connection of the driving spline shaft and near the front. A slidable high-low speed integrated gear is provided at the connection of the high-speed driving gear and on the left side. Inside the slidable high-low speed integrated gear, there is a driven spline shaft. A gear position stabilizing pin hole is formed on the driven spline shaft. A shifting lever is also provided on the top of the gearbox housing, and a shifting piece is provided at the bottom of the shifting lever.

[0008] Preferably, the shifting lever and the shifting piece are integrally designed, and the shifting piece is connected to the slidable high-low speed integrated gear.

[0009] Preferably, a spring and a steel ball are installed inside the gear position stabilizing pin hole, and the passive spline shaft and the gear position stabilizing pin hole are used in cooperation with each other.

[0010] Preferably, a driving sprocket is provided on the front surface of the passive spline shaft, a driven sprocket is provided on the left side of the driving sprocket, and the driving sprocket and the driven sprocket are connected by a power transmission chain.

[0011] Preferably, a mudguard is provided at the connection of the whole machine housing and near the right side, a ground-touching bracket is provided at the bottom of the whole machine housing, and a depth adjustment wheel is provided on the left side of the whole machine housing.

[0012] Preferably, a plurality of working shafts are provided at the connection of the driven sprocket, and a plurality of working blades are provided at the connection of the working shafts.

[0013] Preferably, the plurality of working blades and the plurality of working shafts are connected and fixed by blade fixing pins.

[0014] Compared with the prior art, the beneficial effects of the present utility model are as follows:

[0015] 1. Through a reasonable transmission method in which the passive spline shaft transmits power to the working shaft by a chain or a belt, the working knife can rotate at a high speed or a low speed, realizing the function of straw returning to the field. This transmission method can efficiently transmit power, ensuring that the working knife can maintain good cutting force and comminution effect at different speeds, thereby greatly improving the efficiency and quality of farmland operations;

[0016] 2. The adjustable speed enables the straw returning machine to adapt to different types of crop straws and different soil conditions. Whether it is hard straw or soft straw, the straw returning machine can adjust the speed according to the actual situation to achieve the best operation effect. This greatly expands the application range of the straw returning machine and meets the operation requirements of different regions and different farmlands. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 is a front main body schematic diagram of the present utility model;

[0018] Figure 2 is a top view structural schematic diagram of the main body of the present utility model;

[0019] Figure 3 is a top view internal structural schematic diagram of the gearbox housing in the present utility model;

[0020] Figure 4 is a side view schematic diagram of the gearbox housing in the present utility model;

[0021] Figure 5This is a schematic diagram of the internal structure of the transmission housing in the present utility model.

[0022] Legend: 1. Shift lever; 2. Shift paddle; 3. Driven spline shaft; 4. Slidable high and low speed integrated gear; 5. Driving spline shaft; 6. High speed driving gear; 7. Transmission housing; 8. Low speed driving gear; 9. Gear position stabilizing pin hole; 10. Driving transmission wheel; 11. Driven transmission wheel; 12. Fender; 13. Anti-touching bracket; 14. Depth adjustment wheel; 15. Power transmission chain; 16. Working shaft; 17. Working blade; 18. Blade fixing pin; 19. Whole machine housing. Specific implementation mode

[0023] Next, in combination with the embodiments of the present utility model, the technical solutions in the embodiments of the present utility model will be clearly and completely described. Obviously, the described embodiments are only a part of the embodiments of the present utility model, rather than all the embodiments. Based on the embodiments in the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative work shall fall within the protection scope of the present utility model. Embodiment

[0024] As Figures 1-5 shown, the gearbox for a straw returning machine described in this embodiment includes a whole machine housing 19. A transmission housing 7 is installed on the right side of the whole machine housing 19. Inside the transmission housing 7, there is a high speed driving gear 6. Inside the high speed driving gear 6, there is a driving spline shaft 5. A low speed driving gear 8 is also provided at the connection of the driving spline shaft 5 and near the front. At the connection of the high speed driving gear 6 and on the left side, there is a slidable high and low speed integrated gear 4. Inside the slidable high and low speed integrated gear 4, there is a driven spline shaft 3. A gear position stabilizing pin hole 9 is provided on the driven spline shaft 3. A shift lever 1 is also provided on the top of the transmission housing 7. A shift paddle 2 is provided at the bottom of the shift lever 1.

[0025] When the user pushes the shift lever 1, the shift paddle 2 moves accordingly and is connected to the slidable high and low speed integrated gear 4, thereby realizing the left and right sliding control of the slidable high and low speed integrated gear 4, and further completing the switching between high speed and low speed modes.

[0026] Through a reasonable transmission method in which the power is transmitted to the working shaft 16 by the driven spline shaft 3 through a chain or belt, the working blade can rotate at high speed or low speed, realizing the function of straw crushing and returning to the field. This transmission method can efficiently transmit power, ensuring that the working blade can maintain good cutting force and crushing effect at different speeds, thereby greatly improving the efficiency and quality of farmland operations.

[0027] The adjustable speed enables the straw returning machine to adapt to different types of crop straws and different soil conditions. Whether it is hard straw or soft straw, the straw returning machine can adjust the speed according to the actual situation to achieve the best operation effect. This greatly expands the applicable range of the straw returning machine and meets the operation requirements of different regions and different farmlands.

[0028] The shift lever 1 and the shift paddle 2 are integrally designed, and the shift paddle 2 is connected to the slidable high-low speed integrated gear 4.

[0029] A spring and a steel ball are installed inside the gear position stabilizing pin hole 9, and the passive spline shaft 3 and the gear position stabilizing pin hole 9 are used in cooperation with each other.

[0030] On the front of the passive spline shaft 3, there is a driving sprocket 10. On the left side of the driving sprocket 10, there is a driven sprocket 11. The driving sprocket 10 and the driven sprocket 11 are connected by a power transmission chain 15. This chain drive method has the characteristics of high efficiency and stability, and can accurately transmit the power from the passive spline shaft 3 to the driven sprocket 11.

[0031] At the connection of the whole machine housing 19 and near the right side, there is a mudguard 12. The mudguard 12 can effectively prevent mud from splashing during the operation, protect the surrounding environment and the safety of the operator. At the bottom of the whole machine housing 19, there is a ground contact bracket 13. On the left side of the whole machine housing 19, there is a depth adjustment wheel 14. The ground contact bracket 13 provides stable support for the whole straw returning machine to ensure that the machine can maintain a stable running state during the operation. The depth adjustment wheel 14 can adjust the depth of the working blade 17 entering the soil according to different farmland operation requirements, so as to achieve the best straw crushing and returning effect.

[0032] At the connection of the driven sprocket 11, there are several working shafts 16. At the connection of the working shafts 16, there are several working blades 17. These working blades 17 and the working shafts 16 together form the core working components of the straw returning machine. Several working blades 17 and several working shafts 16 are all connected and fixed by blade fixing pins 18 to ensure that the working blades 17 can be firmly installed on the working shafts 16 during the high-speed rotation operation and exert the best cutting force and crushing effect.

[0033] Several working blades 17 and several working shafts 16 are all connected and fixed by blade fixing pins 18.

[0034] In summary, during the actual operation process, the high-speed driving gear 6 is combined with the walking tractor gearbox to provide the power source. As a common and reliable agricultural power equipment, the walking tractor provides stable power support for the rotary tiller. Then, by the left and right sliding of the slidable high and low speed integrated gear 4, the driving force is combined with the high-speed driving gear 6 or the low-speed driving gear 8. The user can, according to the actual operation requirements, operate the shift lever 1 to control the movement of the shift paddle 2, so as to realize the sliding switch of the slidable high and low speed integrated gear 4. In this way, it is possible to select a suitable speed mode according to different farmland conditions and operation requirements. After the slidable high and low speed integrated gear 4 is combined with the corresponding gear, it will drive the driven spline shaft 3 to rotate. The driven spline shaft 3 then transmits the power to the working shaft 16 in the form of a chain or a belt. The working knives on the working shaft 16 rotate at a high speed or a low speed, achieving the function of straw crushing and returning to the field. During the whole process, each component closely cooperates to jointly provide an efficient and reliable solution for farmland operations.

[0035] Although the embodiments of the present invention have been shown and described, for those of ordinary skill in the art, it can be understood that various changes, modifications, substitutions and variations can be made to these embodiments without departing from the principle and spirit of the present invention. The scope of the present invention is defined by the appended claims and their equivalents.

Claims

1. A gearbox for a returning machine, comprising a whole machine housing (19), characterized in that: On the right side of the whole machine housing (19), a gearbox housing (7) is installed. Inside the gearbox housing (7), a high-speed driving gear (6) is provided. Inside the high-speed driving gear (6), a driving spline shaft (5) is provided. At the connection of the driving spline shaft (5) and near the front, a low-speed driving gear (8) is also provided. At the connection of the high-speed driving gear (6) and on the left side, a slidable high and low speed integrated gear (4) is provided. Inside the slidable high and low speed integrated gear (4), a driven spline shaft (3) is provided. On the driven spline shaft (3), a gear position stabilizing pin hole (9) is formed. On the top of the gearbox housing (7), a shift lever (1) is further provided. At the bottom of the shift lever (1), a shift paddle (2) is provided.

2. The gearbox for a returning machine according to claim 1, characterized in that: The shift lever (1) and the shift paddle (2) are integrally designed, and the shift paddle (2) is connected to the slidable high and low speed integrated gear (4).

3. The gearbox for a rotary tiller according to claim 2, characterized in that: Inside the gear position stabilizing pin hole (9), a spring and a steel ball are installed, and the driven spline shaft (3) and the gear position stabilizing pin hole (9) are used in cooperation with each other.

4. The gearbox for a straw returning machine according to claim 3, characterized in that: On the front of the driven spline shaft (3), a driving transmission wheel (10) is provided. On the left side of the driving transmission wheel (10), a driven transmission wheel (11) is provided. The driving transmission wheel (10) and the driven transmission wheel (11) are connected by a power transmission chain (15).

5. The gearbox for a rotary tiller according to claim 4, characterized in that: At the connection of the whole machine housing (19) and near the right side, a mudguard (12) is provided. At the bottom of the whole machine housing (19), a ground contact prevention bracket (13) is provided. On the left side of the whole machine housing (19), a depth adjustment wheel (14) is provided.

6. The gearbox for a rotary tiller according to claim 5, wherein: At the connection of the driven transmission wheel (11), a number of working shafts (16) are provided. At the connection of the working shafts (16), a number of working blades (17) are provided.

7. A gearbox for a rotary tiller, characterized in that: The number of the working blades (17) and the number of the working shafts (16) are all connected and fixed by blade fixing pins (18).

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