High-torque split type threshing cylinder speed change gear box
By introducing a stepped linkage gear assembly and a brush system into the speed change gearbox, combined with wind power to clean debris, the problem of crop shell debris entering the gear space is solved, ensuring the normal operation and heat dissipation effect of the gearbox.
Patent Information
- Application Number
- CN202422514765.9
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-10-17
- Publication Date
- 2025-09-19
- Estimated Expiration
- 2034-10-17
AI Technical Summary
Crop shell debris can easily enter the gearbox, stick between the gears, and affect the operation of the gearbox.
A high-torque split threshing drum speed change gearbox is designed, which adopts a stepped linkage gear assembly to cooperate with the scrub brush. The elastic force of the return spring is used to make the scrub brush brush off the debris, and the debris is blown into the ash storage bin by wind power to achieve debris cleaning and heat dissipation.
It effectively prevents debris from blocking gear rotation, ensures normal operation of the gearbox, reduces the risk of high-temperature damage, improves heat dissipation, and facilitates debris cleaning.
Smart Images
Figure CN223349135U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the field of gearboxes, in particular to a high-torque split threshing drum speed-changing gearbox. Background Art
[0002] A thresher is a harvesting machine that can separate the grains of crops from the stalks, and mainly refers to a harvesting machine for grain crops. There are different types of threshers depending on the crops. For example, a "rice thresher" is suitable for threshing rice; a "corn thresher" is used for threshing corn, and so on. A thresher generally consists of a threshing drum and a storage bin. The threshing drum thres the crops and then stores them inside the storage bin. When threshing different crops, the thresher needs to use a speed change gearbox to change the speed of the thresher. In the prior art, when the thresher is running, the crop shell debris can easily enter the gearbox. These debris will stick between the gears and affect the operation of the speed change gearbox. Therefore, it is necessary to propose a high-torque split threshing drum speed change gearbox to solve the above problems. Utility Model Content
[0003] The purpose of the utility model is to provide a high-torque split threshing drum speed change gear box to solve the problem that crop shell debris easily enters the interior of the gearbox and sticks between the gears, thereby affecting the operation of the speed change gear box.
[0004] To achieve the above-mentioned object, the utility model provides the following technical solution: a high-torque split threshing drum speed change gearbox, comprising a gearbox body, wherein a motor output shaft and a threshing hob shaft are rotatably mounted on both ends of the gearbox body, and a stepped linkage gear assembly is provided on each of the motor output shaft and the threshing hob shaft, and the two stepped linkage gear assemblies are cooperatively arranged;
[0005] One end of a telescopic rod is fixedly mounted on the top inner wall of the gearbox body, and a lifting plate is fixedly mounted on the other end of the telescopic rod. A return spring is sleeved on the outer side of the telescopic rod, and one end of the return spring is in movably contact with the top inner wall of the gearbox body, and the other end of the return spring is in movably contact with the upper surface of the lifting plate. A scrub brush is fixedly mounted on the lower surface of the lifting plate, and the scrub brush is in movably contact with the stepped linkage gear assembly.
[0006] Preferably, a wind plate is rotatably mounted on one side of the gearbox body, one end of a connecting plate is rotatably mounted on one end of the lower surface of the lifting plate, and the other end of the connecting plate is rotatably connected to the upper surface of the wind plate.
[0007] Preferably, a plurality of gear tubes are sleeved on the threshing cutter shaft, and the gear tubes are arranged in cooperation with the stepped linkage gear assembly. A wheel hub is fixedly mounted on the threshing cutter shaft, and a gear sleeve is sleeved on the outer side of the wheel hub. The gear sleeve is slidably connected to the wheel hub, and the gear sleeve is arranged in cooperation with the gear tube. An electric push rod is provided on the inner wall of one side of the gearbox body, and one end of the electric push rod is fixedly connected to an L-shaped pull rod, and one end of the L-shaped pull rod is fixedly connected to a round tube, and the round tube is sleeved on the outer side of the gear sleeve.
[0008] Preferably, an ash storage bin is provided at the bottom of the gearbox body, a dust exhaust pipe is provided on one side of the ash storage bin, and a filter is provided inside the dust exhaust pipe.
[0009] Preferably, the stepped linkage gear assembly includes a plurality of gears, and the diameters of the plurality of gears are different.
[0010] Technical effects and advantages of this utility model:
[0011] 1. During operation, when the stepped linkage gear assembly rotates, the rotating gears will squeeze and rub against the corresponding scribble brushes. Under the elastic force of the return spring, the scribble brushes can brush off the crop shell debris on the gears, which can prevent the debris from blocking the rotation of the gears and ensure the normal operation of the gearbox. At the same time, the return spring can continuously vibrate the scribble brushes to shake off the debris brushed off by the scribble brushes.
[0012] 2. During operation, the gears in the stepped linkage gear assembly continuously squeeze the brush, causing the lifting plate to move back and forth, and then the connecting plate drives the wind plate to swing back and forth. The wind force generated by the swing of the wind plate can cool the gears and prevent high temperature from damaging the gearbox;
[0013] 3. During operation, the wind force generated by the swing of the wind plate can blow the debris brushed off to the oblique lower part of the gearbox body and into the interior of the ash storage bin, which is convenient for subsequent cleaning. The heat generated by the friction of the gear rotation can be discharged through the dust exhaust pipe, with good heat dissipation effect. BRIEF DESCRIPTION OF THE DRAWINGS
[0014] Figure 1 This is a schematic diagram of the structure of the high-torque split threshing drum speed-changing gearbox of the utility model.
[0015] Figure 2 This is a cross-sectional view of the high-torque split threshing drum speed change gearbox of the utility model.
[0016] Figure 3 This is a schematic diagram of the internal structure of the high-torque split threshing drum speed-changing gearbox of the utility model.
[0017] In the figure: 1. gearbox body; 2. motor output shaft; 3. threshing hob shaft; 4. stepped linkage gear assembly; 5. gear sleeve; 6. electric push rod; 7. L-shaped pull rod; 8. round tube; 9. telescopic rod; 10. return spring; 11. lifting plate; 12. brush; 13. connecting plate; 14. air plate; 15. gear tube; 16. ash storage bin. DETAILED DESCRIPTION
[0018] The following will be combined with the drawings in the embodiments of the present invention to clearly and completely describe the technical solutions in the embodiments of the present invention. Obviously, the embodiments described are only part of the embodiments of the present invention, not all of the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative efforts are within the scope of protection of the present invention.
[0019] Torque refers to the average torque output from the crankshaft end when the engine is running, commonly known as the "rotational power" of the engine. It is an important parameter of engine performance. The greater the torque, the greater the "power" output by the engine. A high-torque threshing drum can be used for threshing most crops.
[0020] A transmission, also known as a gearbox, is a mechanism used to change the speed and torque of the engine. It can change the transmission ratio between the output and input shafts in a fixed or step-by-step manner. A transmission consists of a speed change transmission mechanism and a control mechanism. The transmission mechanism mostly uses ordinary gears, with the gears on the input shaft arranged from large to small and those on the output shaft from small to large, allowing for flexible speed changes.
[0021] The utility model provides Figure 1 - Figure 3 The high-torque split threshing drum speed change gearbox shown includes a gearbox body 1, and the two ends of the gearbox body 1 are respectively rotatably mounted with a motor output shaft 2 and a threshing hob shaft 3, and the motor output shaft 2 and the threshing hob shaft 3 are both provided with a stepped linkage gear assembly 4, and the two stepped linkage gear assemblies 4 are arranged in coordination, and a plurality of gear tubes 15 are sleeved on the threshing hob shaft 3, and the gear tubes 15 are arranged in coordination with the stepped linkage gear assembly 4, and a wheel hub is fixedly mounted on the threshing hob shaft 3, and a gear sleeve 5 is sleeved on the outer side of the wheel hub, and the gear sleeve 5 is slidably connected to the wheel hub, and the gear sleeve 5 is arranged in coordination with the gear tube 15, and an electric push rod 6 is provided on the inner wall of one side of the gearbox body 1, and one end of the electric push rod 6 is fixedly connected to an L-shaped pull rod 7, and one end of the L-shaped pull rod 7 is fixedly connected to a round tube 8, and the round tube 8 is sleeved on the outer side of the gear sleeve 5;
[0022] The stepped linkage gear assembly 4 includes multiple gears, and the diameters of the multiple gears decrease successively. Multiple gear tubes 15 are respectively fixedly connected to the gears in the stepped linkage gear assembly 4. The gear tube 15 and the gears rotate at the same time. During operation, the electric push rod 6 drives the gear sleeve 5 to move through the L-shaped pull rod 7 and the round tube 8. When the gear sleeve 5 moves to the outside of the gear tube 15, the gear corresponding to the gear tube 15 can drive the gear sleeve 5 to rotate, and then drive the threshing hob shaft 3 to rotate, and can thresh crops at the corresponding speed. This type of setting belongs to the conventional operation mode of the gearbox, so it will not be elaborated.
[0023] In order to solve the problem that crop shell debris easily enters the interior of the gearbox and sticks between the gears, which affects the operation of the speed gearbox, the utility model is fixedly installed with one end of a telescopic rod 9 on the top inner wall of the gearbox body 1, and a lifting plate 11 is fixedly installed on the other end of the telescopic rod 9. A return spring 10 is sleeved on the outer side of the telescopic rod 9, and one end of the return spring 10 is in movable contact with the top inner wall of the gearbox body 1, and the other end of the return spring 10 is in movable contact with the upper surface of the lifting plate 11. A scribble brush 12 is fixedly installed on the lower surface of the lifting plate 11, and the scribble brush 12 is in movably contact with the stepped linkage gear assembly 4. During operation, when the stepped linkage gear assembly 4 rotates, the rotating gear will squeeze the corresponding scribble brush 12 and rub against the scribble brush 12. Under the elastic force of the return spring 10, the scribble brush 12 can brush off the crop shell debris on the gear, thereby preventing the debris from blocking the rotation of the gear and ensuring the normal operation of the gearbox. At the same time, the return spring 10 can continuously vibrate the scribble brush 12 to shake off the debris brushed off by the scribble brush 12.
[0024] Furthermore, the utility model has a wind plate 14 rotatably installed on one side of the gearbox body 1, one end of the lower surface of the lifting plate 11 is rotatably installed with one end of the connecting plate 13, and the other end of the connecting plate 13 is rotatably connected to the upper surface of the wind plate 14. During operation, the gears in the stepped linkage gear assembly 4 continuously squeeze the brush 12, causing the lifting plate 11 to move back and forth, and then the connecting plate 13 drives the wind plate 14 to swing back and forth. The wind force generated by the swinging of the wind plate 14 can cool the gears and prevent high temperature from damaging the gearbox.
[0025] Furthermore, the utility model is provided with an ash storage bin 16 at the bottom of the gearbox body 1, and a dust exhaust pipe is provided on one side of the ash storage bin 16, and a filter is provided inside the dust exhaust pipe. During operation, the wind force generated by the swing of the wind plate 14 can blow the brushed debris to the oblique lower part of the gearbox body 1 and into the interior of the ash storage bin 16. The heat generated by the friction of the gear rotation can be discharged through the dust exhaust pipe, and the heat dissipation effect is good. After the threshing work is completed, the filter inside the dust exhaust pipe can be pulled out to clean the debris inside the ash storage bin 16.
Claims
1. A high torque split threshing drum speed change gearbox, comprising a gearbox body (1), characterized in that: The two ends of the gearbox body (1) are rotatably mounted with a motor output shaft (2) and a threshing cutter shaft (3), and both the motor output shaft (2) and the threshing cutter shaft (3) are provided with a stepped linkage gear assembly (4), and the two stepped linkage gear assemblies (4) are arranged in coordination; One end of a telescopic rod (9) is fixedly mounted on the top inner wall of the gearbox body (1), and a lifting plate (11) is fixedly mounted on the other end of the telescopic rod (9). A return spring (10) is sleeved on the outer side of the telescopic rod (9), and one end of the return spring (10) is in active contact with the top inner wall of the gearbox body (1), and the other end of the return spring (10) is in active contact with the upper surface of the lifting plate (11). A scrub brush (12) is fixedly mounted on the lower surface of the lifting plate (11), and the scrub brush (12) is in active contact with the stepped linkage gear assembly (4).
2. The high torque split threshing drum speed change gearbox according to claim 1, characterized in that: A wind plate (14) is rotatably mounted on one side of the gearbox body (1), one end of a connecting plate (13) is rotatably mounted on one end of the lower surface of the lifting plate (11), and the other end of the connecting plate (13) is rotatably connected to the upper surface of the wind plate (14).
3. The high torque split threshing drum speed change gearbox according to claim 1, characterized in that: The threshing cutter shaft (3) is sleeved with a plurality of gear tubes (15), the gear tubes (15) are arranged in cooperation with the stepped linkage gear assembly (4), a wheel hub is fixedly mounted on the threshing cutter shaft (3), a gear sleeve (5) is sleeved on the outer side of the wheel hub, the gear sleeve (5) is slidably connected to the wheel hub, the gear sleeve (5) and the gear tube (15) are arranged in cooperation, an electric push rod (6) is arranged on the inner wall of one side of the gearbox body (1), one end of the electric push rod (6) is fixedly connected to an L-shaped pull rod (7), one end of the L-shaped pull rod (7) is fixedly connected to a round tube (8), and the round tube (8) is sleeved on the outer side of the gear sleeve (5).
4. The high torque split threshing drum speed change gearbox according to claim 1, characterized in that: An ash storage bin (16) is provided at the bottom of the gearbox body (1), a dust exhaust pipe is provided on one side of the ash storage bin (16), and a filter is provided inside the dust exhaust pipe.
5. The high torque split threshing drum speed change gearbox according to claim 1, characterized in that: The stepped linkage gear assembly (4) comprises a plurality of gears, and the diameters of the gears are different.