Cutter shaft transmission structure of crawler rotary cultivator

Abstract

The utility model discloses a crawler rotary cultivator cutter shaft transmission structure which comprises a machine frame, a connecting mechanism composed of a plurality of connecting frames is arranged at the top end of the machine frame, a driving motor is arranged in the middle of the top end of the machine frame, a transmission shaft is arranged at the output end of the driving motor, and side frames are arranged on the two sides of the machine frame. Transmission mechanisms are arranged between the outer ends of the transmission shafts and the corresponding side frames, dynamic cutter shafts which are horizontally distributed are arranged between the side frames, and fixing shafts are arranged at the two ends of each dynamic cutter shaft. The two ends of the dynamic cutter shaft are connected with the fixed shaft through a flexible connecting assembly composed of a positioning ring, a butt joint plate and an elastic element. According to the cutter shaft transmission structure of the crawler rotary cultivator, the adaptability and the flexibility of the cutter shaft under complex working conditions are improved, impact damage is effectively reduced, the stability of power transmission is enhanced, and the service life of the cutter is prolonged.

Description

Technical Field

[0001] This utility model relates to the field of rotary tiller technology, specifically to a cutter shaft transmission structure for a tracked rotary tiller. Background Technology

[0002] Tracked rotary tillers, as essential equipment in modern agricultural production, are widely used in various farmland operations due to their powerful soil-breaking capabilities, the smoothness of the land surface after tillage, and adaptability to diverse terrains. One of their core components, the rotary tillage unit, uses a power system to drive rotating blades, effectively loosening and cutting the soil. The design and optimization of the rotary tillage unit directly affects the machine's operating efficiency and quality. Among these, the blade shaft transmission structure is a key element ensuring the efficient and stable operation of the rotary tillage blades, and is crucial for improving the overall performance of the machine.

[0003] A common problem in the existing cutter shaft drive structure design of tracked rotary tillers is that the traditional cutter shaft connection method mostly adopts rigid connection. This limits the flexibility and adaptability of the cutter shaft when facing complex working environments. Especially when dealing with hard or rocky soil, rigid connection can easily cause the cutter shaft to be subjected to large impact forces, increasing the risk of cutter shaft breakage and reducing the service life of the cutters. In addition, this design may also lead to unstable power transmission, affecting the rotary tillage effect and even causing unnecessary power loss. Utility Model Content

[0004] The purpose of this utility model is to provide a cutter shaft transmission structure for a tracked rotary tiller, in order to solve the problems mentioned in the background art, where the cutter shaft connection method in the current tracked rotary tiller cutter shaft transmission structure design mostly adopts rigid connection, which has poor adaptability and flexibility, is susceptible to impact leading to increased risk of breakage, and has unstable power transmission.

[0005] To achieve the above objectives, this utility model provides the following technical solution: a cutter shaft transmission structure for a tracked rotary tiller, comprising a frame, a connecting mechanism consisting of several connecting frames at the top of the frame, a drive motor at the middle of the top of the frame, a transmission shaft at the output end of the drive motor, side frames on both sides of the frame, a transmission mechanism between the outer end of the transmission shaft and the corresponding side frame, and a horizontally distributed dynamic cutter shaft between the side frames, with fixed shafts at both ends of the dynamic cutter shaft, and the two ends of the dynamic cutter shaft connected to the fixed shafts by a flexible connecting assembly consisting of a positioning ring, a docking plate, and an elastic element.

[0006] Preferably, the transmission mechanism includes a driving pulley, a transmission belt, and a driven pulley. The driving pulley is connected to the outer end of the transmission shaft, the driven pulley is connected to the drive shaft on the side frame, and the transmission belt is connected to the outside of the driving pulley and the driven pulley.

[0007] Preferably, the positioning ring is fixedly sleeved on the end of the fixed shaft adjacent to the dynamic cutter shaft, the elastic element is fixed on both ends of the dynamic cutter shaft, and the mating plate is fixed on the outer end of the elastic element and fixedly connected to the positioning ring by several bolts.

[0008] Preferably, the mating plate has a plurality of inserts on the side facing the positioning ring, and the outer end face of the fixed shaft has a plurality of slots that match the insert structure.

[0009] Preferably, several helical rings are fixed around the edges of both ends of the dynamic cutter shaft, and a stabilizing shaft is transversely inserted into the interior of the helical rings through a threaded structure.

[0010] Preferably, the positioning ring has a plurality of through holes around its edge that match the stabilizing shaft structure, and an elastic ring is fixedly fitted inside the through holes on the positioning ring.

[0011] Compared with existing technologies, the beneficial effects of this utility model are as follows: the cutter shaft transmission structure of this tracked rotary tiller improves the adaptability and flexibility of the cutter shaft under complex working conditions, effectively reduces impact damage, enhances the smoothness of power transmission, and extends the service life of the cutters. Through the flexible connection assembly design consisting of a positioning ring, a connecting plate, and elastic elements, this tracked rotary tiller cutter shaft transmission structure not only ensures a stable connection between the dynamic cutter shaft and the fixed shaft but also effectively absorbs vibrations and impacts generated during operation, reducing damage to the entire transmission system. Furthermore, the transmission mechanism between the drive shaft and the side frame ensures efficient power transmission and smooth output, further improving the overall working efficiency and reliability of the machine. Attached Figure Description

[0012] Figure 1 This is a schematic diagram of the drive structure of the cutter shaft of a tracked rotary tiller according to the present invention;

[0013] Figure 2 This is a schematic diagram of the fixed shaft end structure of a rotary tiller cutter shaft transmission structure according to the present invention;

[0014] Figure 3 This is a schematic diagram of the dynamic cutter shaft end structure of a cutter shaft transmission structure for a tracked rotary tiller according to the present invention;

[0015] Figure 4 This is a top view schematic diagram of the overall structure of the cutter shaft transmission structure of a tracked rotary tiller according to the present invention.

[0016] In the diagram: 1. Frame; 2. Connecting mechanism; 3. Drive motor; 4. Transmission shaft; 5. Side frame; 6. Transmission mechanism; 61. Driving pulley; 62. Transmission belt; 63. Driven pulley; 7. Dynamic cutter shaft; 8. Fixed shaft; 9. Flexible connection assembly; 91. Positioning ring; 92. Connecting plate; 93. Elastic element; 94. Elastic ring; 10. Threaded ring; 11. Stabilizing shaft; 12. Insert. Detailed Implementation

[0017] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0018] Please see Figure 1-4This utility model provides a technical solution: a drive structure for the cutter shaft of a tracked rotary tiller, including a frame 1. The top of the frame 1 has a connecting mechanism 2 composed of several connecting frames, which is used to connect to the entire machine. A drive motor 3 is fixedly installed in the middle of the top of the frame 1 by bolts. The output end of the drive motor 3 has a drive shaft 4. Side frames 5 are provided on both sides of the frame 1. A transmission mechanism 6 is provided between the outer end of the drive shaft 4 and the corresponding side frame 5. Dynamic cutter shafts 7 are horizontally distributed between the side frames 5. Rotary tillage blades are installed on the surface of the dynamic cutter shafts 7 through several connecting sleeves. Fixed shafts 8 are provided at both ends of the dynamic cutter shafts 7. The fixed shafts 8 are connected to the side frames 5 through couplings. The two ends of the dynamic cutter shafts 7 are connected to the fixed shafts 8 through... A flexible connection assembly 9, consisting of a positioning ring 91, a docking plate 92, and an elastic element 93, is connected. The drive motor 3 of this structure starts and transmits power to the transmission mechanism 6 via the transmission shaft 4, thereby driving the dynamic cutter shaft 7 between the side frames 5 to rotate for rotary tillage. During this process, the positioning ring 91 of the flexible connection assembly 9 ensures precise alignment between the fixed shaft 8 and the dynamic cutter shaft 7, while the elastic element 93 effectively absorbs the impact force encountered during operation, reducing potential damage from rigid connections and enhancing the overall system's impact resistance. The docking plate 92 further strengthens the stability of this connection method, ensuring a tight fit between components without loosening. This not only improves the adaptability and flexibility of the cutter shaft under complex working conditions but also significantly reduces... This design mitigates the risk of tool shaft breakage due to hard soil or rocks, ensures smooth power transmission, reduces unnecessary power loss, and extends tool life. It solves the problems of high impact damage, unstable power transmission, and short tool life caused by rigid connections in existing technologies. The transmission mechanism 6 includes a drive pulley 61, a transmission belt 62, and a driven pulley 63. The drive pulley 61 is connected to the outer end of the transmission shaft 4, and the driven pulley 63 is connected to a drive shaft on one of the side supports 5. This drive shaft can be linked to the coupling connecting the fixed shaft 8 and the side support 5. The transmission belt 62 is connected externally to the drive pulley 61 and the driven pulley 63. When the drive motor 3 starts and drives the drive pulley 61 to rotate via the transmission shaft 4, this structure... The driving pulley 61 transmits power to the driven pulley 63 via the transmission belt 62. The driven pulley 63 further transmits power to the fixed shaft 8 via the drive shaft, and finally to the dynamic cutter shaft 7. In this process, the transmission ratio between the driving pulley 61 and the driven pulley 63 can be optimized by adjusting the tension of the transmission belt 62, ensuring the high efficiency and stability of power transmission. The positioning ring 91 is fixedly sleeved on the end of the fixed shaft 8 adjacent to the dynamic cutter shaft 7. The elastic element 93 is made of composite rubber shock-absorbing pad material. The elastic element 93 is fixed to both ends of the dynamic cutter shaft 7 by screws. The mating plate 92 is also fixed to the outer end of the elastic element 93 by screws and is fixedly connected to the positioning ring 91 by several bolts. The positioning ring 91 is provided with several bolt mating holes.When the dynamic cutter shaft 7 is subjected to impact forces from media such as soil, the elastic element 93 can effectively absorb these impact energies, reducing direct damage to the dynamic cutter shaft 7 and the fixed shaft 8. The elastic element 93 is firmly fixed to both ends of the dynamic cutter shaft 7 with screws, ensuring that it will not loosen or shift under high-load working conditions. At the same time, the docking plate 92 is further tightly connected to the positioning ring 91 with bolts, forming a robust and flexible overall structure, thereby enhancing the impact resistance and adaptability of the entire flexible connection assembly 9. Three inserts 12 are welded and fixed to the side of the docking plate 92 facing the positioning ring 91, and the outer end face of the fixed shaft 8 is provided with three slots that match the structure of the inserts 12. When the dynamic cutter shaft 7 is subjected to impact forces or torsional forces from media such as soil, the inserts 12 and the slots on the fixed shaft 8 are precisely engaged, further ensuring a tight connection between the docking plate 92 and the fixed shaft 8, effectively preventing the docking plate from collapsing. In the event of displacement or loosening during high-load operation, six threaded rings 10 are fixed around the edges of both ends of the dynamic cutter shaft 7. A stabilizing shaft 11 is laterally inserted into the interior of each threaded ring 10 via a threaded structure. Several through holes matching the structure of the stabilizing shaft 11 are formed around the edge of the positioning ring 91, and elastic rings 94 are fixedly fitted into these holes. The stabilizing shaft 11 can move laterally through the threaded rings 10 until it extends into the through holes of the positioning ring 91. The elastic rings 94 further enhance the stability and buffering capacity of this connection method. The elastic rings 94 provide additional shock absorption when the stabilizing shaft 11 is subjected to impact or vibration, preventing loosening or damage to components due to severe vibration. Therefore, the cooperation between the threaded rings 10 and the stabilizing shaft 11 further improves the rigidity and stability of the entire flexible connection assembly 9, adapting to the precise requirements of different working conditions, thereby improving the overall working efficiency and reliability of the machine.

[0019] Working Principle: When using the cutter shaft transmission structure of this tracked rotary tiller, the drive motor 3 is first started. The drive motor 3 transmits power to the drive pulley 61 in the transmission mechanism 6 through the transmission shaft 4 at its output end. The drive pulley 61 drives the driven pulley 63 to rotate through the transmission belt 62. The driven pulley 63 further transmits power to the fixed shaft 8 through the drive shaft, and finally reaches the dynamic cutter shaft 7. During this process, the transmission ratio between the drive pulley 61 and the driven pulley 63 can be optimized by adjusting the tension of the transmission belt 62, ensuring the high efficiency and stability of power transmission. Next, the dynamic cutter shaft 7 begins to rotate, driving several rotary tillage blades on its surface to perform rotary tillage operations. During this period, because the two ends of the dynamic cutter shaft 7 are connected to the fixed shaft 8 by positioning... The flexible connection assembly 9, consisting of ring 91, docking plate 92, and elastic element 93, is connected. The elastic element 93 can effectively absorb the impact force encountered during operation and reduce the damage that may be caused by rigid connection. At the same time, docking plate 92 is fixed to the outer end of elastic element 93 and fixed to positioning ring 91 by several bolts to form a strong and flexible overall structure. In addition, three inserts 12 welded to the side of docking plate 92 facing positioning ring 91 are precisely fitted with three sockets on the outer end face of fixed shaft 8 to prevent displacement or loosening during high-load operation. Meanwhile, the stabilizing shaft 11 can be inserted into the through hole on positioning ring 91 and the elastic ring 94 can enhance the stability and buffering capacity of the connection, thereby completing a series of tasks.

[0020] Although the present invention has been described in detail with reference to the foregoing embodiments, those skilled in the art can still modify the technical solutions described in the foregoing embodiments or make equivalent substitutions for some of the technical features. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present invention should be included within the protection scope of the present invention.

Claims

1. A drive structure for the cutter shaft of a tracked rotary tiller, comprising a frame (1), wherein the top of the frame (1) is provided with a connecting mechanism (2) consisting of a plurality of connecting frames, characterized in that: A drive motor (3) is provided at the middle of the top of the frame (1). The output end of the drive motor (3) is provided with a transmission shaft (4). Side frames (5) are provided on both sides of the frame (1). A transmission mechanism (6) is provided between the outer end of the transmission shaft (4) and the corresponding side frame (5). Dynamic cutter shafts (7) are provided horizontally between the side frames (5). Fixed shafts (8) are provided at both ends of the dynamic cutter shafts (7). The two ends of the dynamic cutter shafts (7) and the fixed shafts (8) are connected by a flexible connection assembly (9) consisting of a positioning ring (91), a docking plate (92), and an elastic element (93).

2. The drive structure for the cutter shaft of a tracked rotary tiller according to claim 1, characterized in that: The transmission mechanism (6) includes a drive pulley (61), a transmission belt (62), and a driven pulley (63). The drive pulley (61) is connected to the outer end of the transmission shaft (4), and the driven pulley (63) is connected to the drive shaft on the side frame (5). The transmission belt (62) is connected to the outside of the drive pulley (61) and the driven pulley (63).

3. The drive structure for the cutter shaft of a tracked rotary tiller according to claim 1, characterized in that: The positioning ring (91) is fixedly sleeved on one end of the fixed shaft (8) adjacent to the dynamic cutter shaft (7), the elastic element (93) is fixed on both ends of the dynamic cutter shaft (7), and the docking plate (92) is fixed on the outer end of the elastic element (93) and fixedly connected to the positioning ring (91) by several bolts.

4. The drive structure for the cutter shaft of a tracked rotary tiller according to claim 3, characterized in that: The docking plate (92) has several inserts (12) on the side facing the positioning ring (91), and the outer end face of the fixed shaft (8) has several slots that match the structure of the inserts (12).

5. The drive structure for the cutter shaft of a tracked rotary tiller according to claim 1, characterized in that: Several helical rings (10) are fixed around the edges of both ends of the dynamic cutter shaft (7), and a stabilizing shaft (11) is transversely inserted into the interior of the helical rings (10) through a threaded structure.

6. The drive structure for the cutter shaft of a tracked rotary tiller according to claim 5, characterized in that: The positioning ring (91) has several through holes around its edge that match the structure of the stabilizing shaft (11), and an elastic ring (94) is fixedly fitted inside the through holes on the positioning ring (91).

Images