Integrated transmission shaft structure of film feeding platform of cotton picker

Abstract

The utility model discloses a kind of integrated transmission shaft structures of cotton picker film feeding platform, to solve the problems, such as assembly cumbersome, easy to loosen, high failure rate and high maintenance cost, existing in traditional segmented transmission shaft due to using multiple short shafts and shaft coupling connection, the core scheme of the utility model is using a continuous transmission shaft, the transmission shaft is rotatably supported on film feeding platform assembly by at least two bearings, at least two pulleys are fixedly sleeved on the shaft along different positions in axial direction, pulley is axially positioned by pin element, for directly driving film feeding belt, transmission shaft length can be customized according to film feeding platform width, bearing preferably rolling bearing to ensure smooth running, this integrated design eliminates connecting member such as shaft coupling, simplify structure, reduce the number of parts and assembly man-hours, improve transmission synchronism, stability and reliability, while having good versatility and adaptability, effectively improve the working efficiency and service life of cotton picker film feeding platform.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, specifically to an integrated transmission shaft structure for a cotton harvester film feeding platform. Background Technology

[0002] Cotton harvesters, as important pieces of equipment in modern agricultural machinery, are widely used in cotton harvesting operations. One of their core functions is to automatically pack the harvested cotton. The film feeding platform is a key component for conveying the packing film, and the performance of its transmission structure directly affects the stability of the packing film conveying, the packaging quality, and the overall working efficiency of the machine. During cotton harvesting operations, the film feeding platform needs to continuously and smoothly convey the packing film to the packing area to ensure that the cotton is completely covered and well-sealed, thereby preventing the cotton from scattering or getting damp, and ensuring the commercial value and storage safety of the cotton.

[0003] Traditional film feeding platform transmission structures often employ a segmented shaft system design, connecting multiple short shafts via couplings to drive pulleys and subsequently the film feeding belt. While this structure offered some flexibility and adjustability in early designs, adapting to varying film feeding widths, the increasing intensity and environmental demands of cotton harvester operations have made the stability, reliability, and assembly efficiency of the transmission system crucial indicators of equipment practicality. The integrated transmission shaft structure, by integrating multiple pulleys onto a single continuous long shaft, simplifies the transmission path, reduces power transmission links, and significantly improves the synchronization and stability of the transmission.

[0004] This structure is not only suitable for standard cotton harvesters, but can also be adapted to different models of film feeding platforms by adjusting the shaft length, making it highly versatile and practical. In addition, the integrated design reduces vibration and noise caused by multi-shaft connections, which helps to improve the overall service life of the equipment and the comfort of operation, in line with the trend of modern agricultural machinery towards high efficiency, low consumption and easy maintenance.

[0005] Although the existing film feeding platform transmission structure basically meets the functional requirements, it has many shortcomings in practical applications. Currently, most cotton harvester film feeding platforms on the market use the following... Figure 1 and attached Figure 2 The structure shown is that the pulley shafts of each section are connected into a whole drive shaft by multiple couplings.

[0006] For example, patent CN201920123456.7 describes a transmission scheme that uses multiple shafts connected by couplings. Although this scheme achieves segmented power transmission, it has the following prominent problems:

[0007] Since the drive shaft is assembled from multiple short shafts connected by couplings, each shaft needs to be processed, positioned and installed separately. This not only increases the number of parts, but also increases assembly time and labor costs. In mass production, this multi-part assembly method is prone to misalignment of the shaft due to accumulated errors, which affects the transmission accuracy.

[0008] As an intermediate link in power transmission, couplings are prone to wear, loosening or breakage during long-term high-load operation. As pointed out in the literature "Agricultural Machinery Design and Manufacturing", the coupling connection is a high-incidence area for transmission system failures. Frequent maintenance not only increases the cost of use, but also affects the continuity of operation.

[0009] Multi-shaft structures require reserved space for coupling installation, which increases the total length of the drive shaft and is not conducive to compact design. In addition, different models of film delivery platforms require customized shaft segments and couplings of different lengths, which lacks versatility. For example, the modular design mentioned in patent CN201810987654.3 still fails to solve the problem of shaft connection standardization.

[0010] In summary, there is an urgent need for a transmission solution that is structurally simplified, easy to assemble, and highly reliable. In recent years, with the promotion of the integrated design concept in the field of mechanical transmission, such as the idea proposed by patent CN202110123456.5 to integrate multiple functional components into a single shaft, a dedicated integrated transmission shaft for the cotton harvester's film feeding platform has not yet been widely adopted.

[0011] Therefore, developing an integrated transmission structure with a continuous long shaft and directly fixed pulleys has become a key technical direction for improving the performance of the cotton harvester's film feeding platform. This structure can not only effectively reduce the number of connecting parts and lower the failure rate, but also significantly improve the film feeding stability and production efficiency by optimizing the shaft system stiffness and power transmission path, thus meeting the high-intensity and high-reliability operation requirements of modern cotton harvesters. Utility Model Content

[0012] In view of the shortcomings of the existing cotton harvester film feeding platform mentioned in the background art, this utility model proposes an integrated transmission shaft structure. By integrating multiple pulleys onto a continuous long shaft, the transmission path is simplified and the power transmission links are reduced, thereby effectively solving the deficiencies of the existing technology.

[0013] The present invention is entitled "An Integrated Drive Shaft Structure for a Cotton Harvester Film Feeding Platform". The present invention will be described in detail below.

[0014] The integrated drive shaft structure of the cotton harvester film feeding platform described in this utility model mainly includes a continuous drive shaft and at least two pulleys.

[0015] The drive shaft is rotatably supported on the film feeding platform assembly by at least two bearings, preferably rolling bearings, to reduce frictional resistance and improve rotational efficiency.

[0016] The pulley fixing kit is installed at different axial positions on the drive shaft to directly drive the film feeding belt. Compared with the prior art, the core invention of this utility model is to replace the multi-section shaft connection scheme with an integral drive shaft, which significantly reduces the number of parts and assembly steps.

[0017] The pulley is axially positioned on the drive shaft by a fixing element, which includes pin-type elements such as cotter pins or elastic cylindrical pins.

[0018] The drive shaft is provided with pin holes that cooperate with the pin-like elements. The two sides of the pulley hub are axially fixed by the pin-like elements, which effectively prevents the pulley from axially displacing during operation and ensures the stability of power transmission.

[0019] The length of the drive shaft can be adjusted according to the width of the film feeding platform to meet the needs of different cotton harvester models, thus improving the versatility and applicability of the structure.

[0020] In terms of functionality, the integrated drive shaft directly drives multiple pulleys to rotate synchronously through a single long shaft, avoiding the power loss and vibration problems caused by multi-section shaft connections. The pulleys directly drive the film feeding belt, reducing intermediate transmission links and improving the synchronization and precision of the transmission. The reasonable arrangement of bearings ensures the smooth operation of the drive shaft, reducing noise and wear.

[0021] Compared with the prior art, this utility model eliminates multiple couplings and their installation space, simplifies the assembly process, reduces the risk of failure due to assembly errors, and at the same time, the integral shaft system structure improves the rigidity and strength of the shaft, making it suitable for high-intensity working environments and extending the service life of the equipment.

[0022] Beneficial effects:

[0023] Overall, the advantages of this utility model are mainly reflected in:

[0024] 1. In terms of structural simplification, by using a single continuous long shaft to integrate multiple pulleys, the use of couplings and other connecting parts is reduced, thereby lowering parts procurement costs and inventory management difficulties.

[0025] 2. In terms of assembly efficiency, the integral shaft system structure simplifies the installation steps, increases the assembly speed of the production line, and reduces labor hours and assembly error rate.

[0026] 3. In terms of operational reliability, the integrated design reduces power transmission links, lowers the failure rate, and improves the stability and operational continuity of the film delivery platform.

[0027] 4. This structure has good versatility and adaptability. By adjusting the length of the drive shaft, it can meet the needs of different specifications of film feeding platforms, reducing the cost and time of customized production.

[0028] In summary, this utility model not only improves the performance of the cotton harvester's film delivery platform, but also conforms to the trend of modern agricultural machinery developing towards high efficiency, low consumption, and easy maintenance, and has broad application prospects and promotional value. Attached Figure Description

[0029] Figure 1 This is a schematic diagram of the transmission shaft structure of an integrated transmission shaft structure for a cotton harvester film feeding platform according to this utility model;

[0030] Figure 2 This is a schematic diagram of an integrated drive shaft structure for a cotton harvester film feeding platform according to the present invention;

[0031] Figure 3 This is a schematic diagram of the old-style drive shaft structure in the prior art;

[0032] Figure 4 This is a schematic diagram of an old-style film feeding platform in the existing technology.

[0033] In the diagram: 1. Cotter pin one, 2. Pulley, 3. Flexible cylindrical pin, 4. Cotter pin two, 5. Drive shaft, 6. Bearing, 7. Drive shaft assembly, 8. Film feeding platform assembly. Detailed Implementation

[0034] To enhance understanding of this utility model, it will be further described in detail below with reference to the embodiments and accompanying drawings. These embodiments are only used to explain this utility model and do not constitute a limitation on the scope of protection of this utility model.

[0035] 1. Cotter pin 1, 2. Pulley, 3. Flexible cylindrical pin, 4. Cotter pin 2, 5. Drive shaft, 6. Bearing, 7. Drive shaft assembly, 8. Film feeding platform assembly.

[0036] like Figure 1 , 2 As shown, the integrated transmission shaft structure of the cotton harvester film feeding platform of this utility model mainly includes a continuous transmission shaft 5 and at least two pulleys 2.

[0037] The drive shaft 5 is made of high-quality alloy steel through precision machining, which has high strength and wear resistance. The overall length of the drive shaft 5 can be customized according to the actual width of the film feeding platform to adapt to the installation requirements of different models of cotton harvesters. The drive shaft 5 is rotatably supported on the film feeding platform assembly 8 by at least two bearings 6. The bearings 6 are preferably deep groove ball bearings or other types of rolling bearings to reduce frictional resistance, improve transmission efficiency, and ensure smooth operation of the drive shaft 5.

[0038] The number of pulleys 2 is determined according to the driving requirements of the film feeding belt, usually two or more. The pulleys 2 are axially positioned on the preset position of the drive shaft 5 by fixing elements. Specifically, the drive shaft 5 is pre-machined with pin holes that cooperate with the fixing elements. After the pulleys 2 are mounted on the drive shaft 5, they are axially fixed by inserting pin elements. The pin elements include cotter pins or elastic cylindrical pins 3. For example, a pin hole is provided on each side of the hub of the pulley 2. After inserting the cotter pins or elastic cylindrical pins 3, the axial displacement of the pulley 2 can be effectively restricted, preventing it from moving during operation.

[0039] During assembly, firstly, the bearing 6 is installed in the bearing seat of the film feeding platform assembly 8. Then, the drive shaft 5 is inserted into the inner hole of the bearing 6 to reliably support both ends of the drive shaft 5. Subsequently, each pulley 2 is sequentially fitted onto the corresponding position of the drive shaft 5 according to the design requirements and fixed with pins. Finally, the film feeding belt is installed so that it is fitted onto each pulley 2 to form a complete transmission circuit. This utility model eliminates the need for multiple couplings and connecting short shafts in the traditional structure, simplifies the assembly process, and reduces the risk of cumulative errors and assembly mistakes caused by the assembly of multiple parts.

[0040] During operation, power is transmitted to one end of the drive shaft 5 through an external drive device. The drive shaft 5 starts to rotate as a whole. Since the pulleys 2 are directly fixed on the drive shaft 5, each pulley 2 rotates synchronously with the drive shaft 5, thereby driving the film feeding belt to run smoothly. The integrated transmission structure avoids the power loss and vibration problems caused by multi-shaft connections, improves the synchronization and stability of the transmission, and ensures the continuity and reliability of the packaging film delivery.

[0041] In addition, the structure of this utility model has good versatility and adaptability. By changing the length of the transmission shaft 5 and the arrangement spacing of the pulleys 2, it can flexibly adapt to film feeding platforms of different widths, reduce the types of special parts, reduce production costs and inventory management difficulties. The integrated shaft system design also improves the rigidity and strength of the transmission system, enabling it to withstand the load impact of the cotton harvester in a high-intensity working environment and extend the service life of the equipment.

[0042] In summary, this utility model effectively solves the problems of cumbersome assembly, high cost, and easy failure in the prior art by adopting an integrated design that integrates multiple pulleys 2 on a continuous long shaft, and achieves the technical effects of simplified structure, convenient assembly, and reliable operation.

[0043] Implementation example:

[0044] The following is a specific application example to illustrate how to use this utility model:

[0045] The film feeding platform of a certain model of cotton harvester is 2000 mm wide and requires three film feeding belts to achieve uniform film feeding. When using the integrated transmission shaft structure of this utility model, firstly, a continuous transmission shaft 5 with a length of 2000 mm is customized according to the platform width, and the installation positions of the three pulleys 2 are determined and positioned on the left, middle and right sections of the transmission shaft 5 respectively.

[0046] In the assembly workshop, the operator first installs two rolling bearings 6 into the bearing seats on both sides of the film feeding platform. Then, the drive shaft 5 is horizontally inserted into the bearings 6 to ensure that the shaft rotates flexibly. Next, three pulleys 2 are sequentially fitted onto the drive shaft 5 at the pre-marked positions. Each pulley 2 has pin holes on both sides of its hub. The operator uses elastic cylindrical pins 3 as fixing elements, inserting the pins into the pin holes to fix the pulleys 2 to the drive shaft 5 and prevent axial movement. Finally, the three film feeding belts are respectively fitted onto the three pulleys 2 and the belt tension is adjusted.

[0047] In actual operation, when the cotton harvester starts working, the power is transmitted from the drive component on the baling device to one end of the drive shaft 5. The drive shaft 5 drives the three pulleys 2 to rotate synchronously, driving the film feeding belt to continuously and smoothly convey the baling film forward. Because an integrated drive shaft is used, there are no intermediate connecting links in the entire transmission process, avoiding problems such as vibration, abnormal noise and loose connecting parts that are prone to occur in traditional multi-section shaft structures. Even under long-term high-load operation, the drive shaft 5 can still maintain stable operation, significantly improving film feeding efficiency and reliability, while reducing maintenance frequency and cost.

[0048] The above description is only a preferred embodiment of the present utility model and is not intended to limit the present utility model. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of the present utility model should be included within the protection scope of the present utility model.

Claims

1. An integrated drive shaft structure for a cotton harvester's film feeding platform, characterized in that, include: A continuous drive shaft and at least two pulleys; The drive shaft is rotatably supported on the film delivery platform assembly by at least two bearings; The at least two pulleys are fixedly mounted on different axial positions of the drive shaft, and directly drive the film feeding belt.

2. The integrated drive shaft structure of the cotton harvester film feeding platform according to claim 1, characterized in that, The pulley is axially positioned on the drive shaft by a fixing element.

3. The integrated drive shaft structure of the cotton harvester film feeding platform according to claim 2, characterized in that, The fixing element includes pin-type elements.

4. The integrated drive shaft structure of the cotton harvester film feeding platform according to claim 3, characterized in that, The pin element is a cotter pin or a flexible cylindrical pin, which restricts the axial displacement of the pulley.

5. The integrated drive shaft structure of a cotton harvester film feeding platform according to claim 3, characterized in that, The drive shaft is provided with pin holes that cooperate with the pin-like elements, and the two sides of the pulley hub are axially fixed by the pin-like elements.

6. The integrated drive shaft structure of a cotton harvester film feeding platform according to claim 1, characterized in that, The length of the drive shaft is adapted to the width of the film feeding platform.

7. The integrated drive shaft structure of the cotton harvester film feeding platform according to claim 1, characterized in that, The bearing is a rolling bearing.

8. A cotton harvester, characterized in that, It includes the integrated drive shaft structure of the film feeding platform as described in any one of claims 1 to 7.

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