Reel stepless speed regulation structure and application thereof

Abstract

The stepless speed regulation structure of the reel comprises a driving belt wheel, a driven belt wheel connected with the driving belt wheel through a connecting structure, a bearing connected with the driven belt wheel, a bearing seat for placing the bearing, and an adjusting structure for adjusting the distance between the driving belt wheel and the driven belt wheel, a belt is arranged between the driving belt wheel and the driven belt wheel, the adjusting structure is connected with the bearing seat, the adjusting structure drives the driven belt wheel to move by adjusting the position of the bearing seat, and the distance between the driving belt wheel and the driven belt wheel is adjusted. Through an innovative adjusting mechanism, continuous stepless adjustment of the rotating speed of the reel is achieved, and the working efficiency and adaptability of the harvester are improved.

Description

Technical Field

[0001] The invention belongs to the field of harvester manufacturing, and in particular relates to a reel stepless speed regulation structure and application thereof. Background Art

[0002] A harvester is a highly efficient agricultural machine that integrates multiple functions such as harvesting, threshing, separating, and cleaning. It is widely used in the harvesting of wheat, rice, corn and other grains. Its emergence has greatly improved the efficiency of agricultural production, reduced manpower requirements, and shortened the harvest cycle. It is an important invention in the process of modern agricultural mechanization.

[0003] In the process of modern agricultural mechanization, harvesters are key agricultural equipment, and their performance directly affects the efficiency and quality of crop harvesting. With the advancement of science and technology, automation and intelligence have become important ways to improve agricultural production efficiency, especially in the field of grain harvesting. How to achieve more efficient and precise operations has become the focus of industry attention. Although traditional harvesters have reduced the labor intensity of farmers to a certain extent, they still have shortcomings in terms of ease of operation, work efficiency and adaptability to complex field conditions.

[0004] Traditional harvesters must stop the machine to disassemble and install the adjustment pad to adjust the speed of the reel to achieve fast or slow speed adjustment. Real-time adjustment is not possible during the harvesting operation, which essentially limits the flexibility and response speed of speed regulation. The inability to adjust the speed in real time means that the harvester cannot quickly adjust to the optimal working state under different crop conditions or field environments, resulting in limited operating speed and low harvesting efficiency. The speed of the reel does not match the travel speed of the machine, which can easily cause excessive crop damage or missed harvesting, increase crop loss rate, and affect grain yield and quality. The operator is required to frequently stop the machine for manual adjustment, which not only increases labor intensity, but also interrupts the operation process and affects the smoothness of continuous operation. Summary of the invention

[0005] The present invention aims to provide a reel stepless speed regulation structure and its application, so as to solve the technical problems of stepless adjustment of the reel rotation speed and real-time adjustment of the reel rotation speed according to the needs of the user during operation.

[0006] To achieve the above-mentioned purpose, the specific technical scheme of a reel stepless speed regulation structure and its application of the present invention is as follows:

[0007] A reel stepless speed regulation structure comprises a driving pulley connected to a driving wheel, a passive pulley connected to the driving pulley via a connecting structure, a bearing connected to the passive pulley, a bearing seat for placing the bearing, and an adjusting structure for adjusting the distance between the driving pulley and the passive pulley;

[0008] A belt is arranged between the driving pulley and the passive pulley, and the adjusting structure is connected to the bearing seat. The adjusting structure drives the passive pulley to move by adjusting the position of the bearing seat, thereby adjusting the distance between the driving pulley and the passive pulley.

[0009] As a further improvement of the present invention, the adjustment structure includes an adjustment plate connected to the bearing seat, a push-pull rod rotatably connected to one end of the adjustment plate, and an adjustment column rotatably connected to the other end of the adjustment plate;

[0010] The push-pull rod is telescopically driven to drive the adjustment plate to rotate relative to the adjustment column to adjust the position of the bearing seat.

[0011] As a further improvement of the present invention, a first limiting portion is provided on the adjustment plate toward the bearing seat, and a second limiting portion is provided on the bearing seat corresponding to the first limiting portion, and the first limiting portion and the second limiting portion are kept in contact with each other to limit the passive pulley from being away from the active pulley;

[0012] The push-pull rod is telescopically driven to drive the adjustment plate to rotate relative to the adjustment column, and the passive pulley moves relative to the active pulley.

[0013] As a further improvement of the present invention, the abutting position of the first limiting portion and the second limiting portion is away from the driving pulley, and the belt moves toward the connecting structure along the driving pulley and the driven pulley;

[0014] The abutting position of the first limiting portion and the second limiting portion is close to the driving pulley, and the belt is away from the connecting structure along the driving pulley and the driven pulley.

[0015] As a further improvement of the present invention, the first limiting portion is a protrusion facing the bearing seat, and the second limiting portion is a groove matching the protrusion.

[0016] As a further improvement of the present invention, the push-pull rod is connected to the control end of the cab through a control structure.

[0017] As a further improvement of the present invention, the reel stepless speed regulation structure of the present invention also includes an elastic component arranged between the driving pulley and the passive pulley, the elastic force of the elastic component drives the passive pulley away from the driving pulley, and the adjustment structure limits the passive pulley from moving away from the driving pulley.

[0018] As a further improvement of the present invention, the elastic component is a spring arranged around the connecting structure, the spring abuts between the driving pulley and the passive pulley, and continuously maintains a tightened state, and the elastic force urges the passive pulley to move away from the driving pulley.

[0019] As a further improvement of the present invention, the connecting structure includes an inner spline and an outer spline, the outer spline is arranged on the driving pulley, and the inner spline is arranged on the driven pulley, and the inner spline moves along the outer spline to drive the driven pulley to move relative to the driving pulley.

[0020] A harvester using the reel stepless speed regulation structure includes a driving wheel connected to the driving pulley, a tensioning structure, and a reel;

[0021] The reel is provided with a reel driven pulley, and the reel driven pulley is connected to the reel stepless speed regulating structure through the belt; the tensioning structure is located between the reel stepless speed regulating structure and the reel driven pulley, and is used to maintain the tension of the belt;

[0022] The driving wheel drives the active pulley to rotate, and drives the passive pulley of the reel to rotate through the belt, that is, drives the reel to rotate.

[0023] As a further improvement of the present invention, the driving wheel is connected to the driving pulley through a transmission shaft, the driving wheel and the driving pulley are respectively arranged at two ends of the transmission shaft, and the driving wheel drives the driving pulley to rotate through the transmission shaft.

[0024] Beneficial effects:

[0025] The driving pulley and the passive pulley are connected by a connecting structure. While the driving pulley drives the passive pulley to rotate, the passive pulley can slide along the axial direction; an elastic component is provided between the driving pulley and the passive pulley to prevent the passive pulley from not returning to its position when the belt tension is insufficient.

[0026] By adjusting the distance between the passive wheel and the active wheel, the depth of the belt groove can be changed, that is, the pitch diameter of the pulley at the driving end is changed, so as to control the speed of the driven reel; the stroke and tension of the belt spring are increased so that it is in a tensioned state when the diameter of the driving end changes, to prevent the belt from slipping due to insufficient tension; thus, without changing the diameter of the passive pulley, its speed can be adjusted continuously and smoothly to adapt to the operating requirements under different crop conditions, thereby improving the harvesting efficiency and crop adaptability.

[0027] The control terminal is set in the cab, and the operator can conveniently control the speed of the reel in the cab. The operator can make real-time adjustments based on actual conditions without leaving the driving seat, which greatly improves the convenience of operation and continuity of work and reduces labor intensity.

[0028] The continuously variable speed design allows the reel to flexibly adjust its rotation speed according to crop density and height, effectively reducing crop losses and improving harvesting cleanliness, while reducing crushing and damage to crops, ensuring crop quality and sustainable use of farmland.

[0029] Through the stepless speed regulation function, the reel can be adjusted according to different operating conditions and crop characteristics, improving the adaptability and operating efficiency of agricultural machinery; at the same time, the speed of the reel can also be adjusted according to actual operating needs, avoiding excessive energy consumption and realizing energy-saving and environmentally friendly operating methods. BRIEF DESCRIPTION OF THE DRAWINGS

[0030] Figure 1 It is a schematic diagram of a reel stepless speed regulation structure of the present invention;

[0031] Figure 2 It is a schematic diagram for adjusting the structural adjustment;

[0032] Figure 3 It is a side view of the harvester;

[0033] Figure 4 This is a top view of the harvester;

[0034] Figure 5 This is a schematic diagram of the driving wheel of the second embodiment;

[0035] Figure 6 A top view of the harvester of Embodiment 2

[0036] Explanation of marks in the figure: 100, stepless speed regulation structure of the reel; 110, driving pulley; 120, passive pulley; 130, connecting structure; 140, bearing; 150, bearing seat; 151, second limiting part; 160, elastic component; 171, adjusting plate; 172, first limiting part; 173, push-pull rod; 174, adjusting column; 175, hinge pin; 200, driving wheel; 300, transmission shaft; 400, tensioning structure; 500, reel; 510, passive pulley of the reel; 600, belt; 700, control structure. DETAILED DESCRIPTION

[0037] In order to better understand the purpose, structure and function of the present invention, a reel stepless speed regulation structure and its application of the present invention are further described in detail below with reference to the accompanying drawings.

[0038] Implementation example 1:

[0039] like Figure 1As shown, a reel stepless speed regulation structure 100 includes a driving pulley 110, a passive pulley 120, a bearing 140, a bearing seat 150, an elastic component 160, and an adjustment structure. The driving pulley 110 is connected to one end of a transmission shaft 300 and driven to rotate by the transmission shaft 300; the passive pulley 120 is connected to the driving pulley 110 through a connecting structure 130. The connecting structure 130 is a structure that connects the driving pulley 110 and the passive pulley 120 and can drive the passive pulley 120 to rotate. It can be a spline, a flat key, a variable slot, or a cross key, etc. In this embodiment, the connecting structure is a spline structure including an inner spline and an outer spline. The outer spline and the driving pulley are an integral structure, and the inner spline and the passive pulley are an integral structure. The inner spline is telescopic relative to the outer spline to drive the passive pulley to move relative to the driving pulley. A belt 600 is clamped between the driving pulley 110 and the passive pulley 120, and the driving belt 600 drives the reel 500 of the harvester to rotate.

[0040] The passive pulley 120 is connected to the inner ring of the bearing 140 , the bearing 140 is placed on the bearing seat 150 , the back of the bearing seat 150 is in contact with the adjustment structure 160 , and the bearing seat 150 moves along with the passive pulley 120 driven by the adjustment structure 160 .

[0041] In this embodiment, the elastic component 160 is a spring, which is arranged around the connecting structure 140 and abuts between the driving pulley 110 and the passive pulley 120. The spring is always in a compressed state, and the elastic force drives the passive pulley 120 away from the driving pulley 110. The elastic component 160 is not limited to a spring, and can also be other forms of elastic elements, such as a rubber pad, a pneumatic cylinder or a hydraulic cylinder, as long as it can provide the necessary elastic force to maintain the preset gap between the passive pulley 120 and the driving pulley 110 and drive the passive pulley 120 away, and allow the gap to be adjusted as needed.

[0042] The adjustment structure consists of an adjustment plate 171, a push-pull rod 173, and an adjustment column 174. One end of the adjustment column 174 is fixed to the harvester shell, and the other end is rotatably connected to one end of the adjustment plate 171 through a hinge pin 175. The other end of the adjustment plate 171 is rotatably connected to one end of the push-pull rod 173 through a hinge pin 175. The two ends of the adjustment plate 171 are rotatably connected to the push-pull rod 173 and the adjustment column 174 respectively through the hinge pin 175. The other end of the push-pull rod 173 is connected to the control structure 700. The control end of the control structure 700 is arranged in the cab to control the extension and retraction of the push-pull rod 173. In this embodiment, the control structure 700 is an electric push rod, but is not limited to an electric push rod. It can be a hydraulic cylinder, a ball screw, a worm gear, or other components that can control the elongation.

[0043] A first limiting portion 172 is provided on the upper end surface of the adjusting plate 171, and a second limiting portion 151 is correspondingly provided on the back side of the bearing seat 150. In this embodiment, the first limiting portion 172 is a cylindrical pin protruding toward the bearing seat 150 on the adjusting plate 171, and the second limiting portion 151 is a groove matching the cylindrical pin, and the cylindrical pin abuts in the groove. The elastic force of the elastic component 160 pushes the bearing seat 150 toward the adjusting plate 171, so that the first limiting portion 172 and the second limiting portion 151 remain in abutment.

[0044] like Figure 2 As shown, the control structure 700 drives the push-pull rod 173 to extend and retract. When the push-pull rod 173 contracts, it drives the adjustment plate 171 to rotate relative to the adjustment column 174 toward the bearing seat 150. The first limiting portion pushes the bearing seat 150 toward the active pulley 110, that is, the passive pulley 120 moves toward the active pulley 110, squeezes the elastic component 160, and the distance between the active pulley 110 and the passive pulley 120 is reduced, so that the belt 600 moves outward; the control structure 700 drives the push-pull rod 173 to extend. When the push-pull rod 173 is extended, it drives the adjustment plate 171 to rotate in the opposite direction relative to the adjustment column 174. Under the elastic force of the elastic component 160, the bearing seat 150 moves to keep the second limiting portion 151 abutting against the first limiting portion 172, and the distance between the active pulley 110 and the passive pulley 120 is expanded, so that the belt 600 moves inward.

[0045] like Figure 2 As shown, the spacing of the belt 600 on the driving end pulley formed by the driving pulley 110 and the passive pulley 120 changes from D1 to D2, and the belt groove on the driving end pulley changes linearly, that is, the theoretical pitch circle of the driving end pulley changes linearly. When the diameter of the passive end pulley remains unchanged, the speed adjustment of the passive end (paddle wheel) is achieved by changing the pitch circle size of the driving end pulley.

[0046] like Figure 3-4 The harvester comprises a driving wheel 200, a reel stepless speed regulating structure 100, a transmission shaft 300, a tensioning structure 400, and a reel 500. The driving wheel 200 and the reel stepless speed regulating structure 100 are respectively arranged at both ends of the transmission shaft 300. The driving wheel 200 drives the driving pulley 110 in the reel stepless speed regulating structure 100 to rotate through the transmission shaft 300. The driving end pulley composed of the driving pulley 110 and the passive pulley 120 drives the reel passive pulley 510 to rotate through the belt 600. The belt 600 is led out from the reel stepless speed regulating structure 100 and then passes through the tensioning structure 400 to the reel 500. The tensioning structure 400 adjusts the initial tension of the belt 600 to ensure that the belt 600 is attached to the pulley with appropriate pressure.

[0047] Implementation Example 2:

[0048] In this embodiment, Figure 5-6As shown, when other conditions remain unchanged, the driving wheel is directly connected to the active pulley, the transmission shaft is modified into a fixed rotating shaft, the driving wheel is connected to the rotating shaft through a bearing, and directly drives the active pulley to rotate.

[0049] Changing the drive shaft to a fixed rotating shaft reduces the complex gear or chain transmission system required to transmit power through the traditional drive shaft, making the entire drive structure simpler and easier to maintain and repair.

[0050] Direct drive (i.e. the drive wheel is directly connected to the active pulley through a bearing) can reduce energy loss during power transmission. In traditional transmission systems, energy is lost due to friction, elastic deformation and other factors, while this direct connection method can more effectively transmit the engine's power to the working parts, thereby improving overall work efficiency.

[0051] Compared with the transmission shaft, the fixed rotating shaft is more stable during operation and is less prone to deflection or distortion, which helps to improve the operating smoothness and reliability of the entire system and reduce downtime caused by transmission system failure.

[0052] For harvesters that need to frequently adjust the direction of travel or have special steering requirements, the direct drive structure may provide better flexibility. Because the complex transmission device is removed, the design can be more easily adapted to different terrain and crop conditions.

[0053] The harvesters in the above two embodiments, after adopting the stepless speed regulation structure of the reel wheel of the present invention, allow the operator to steplessly adjust the speed of the reel wheel according to the height, density and lodging degree of the crops, ensuring that the crops can be effectively combed, supported and pushed under various field conditions, thereby improving the quality and efficiency of harvesting. Real-time speed regulation enables the harvester to adapt to crop changes more quickly, reduce crop losses or blockages caused by improper adjustments, and maintain smooth harvesting. Accurately controlling the speed of the reel wheel helps reduce unnecessary crushing and pulling of crops, protecting crop quality, which is particularly important when dealing with fragile crops. Continuously variable speed broadens the scope of application of the harvester, enabling it to better cope with different types of crops and growth conditions, and improves overall operational adaptability.

[0054] It is to be understood that the present invention is described by some embodiments, and it is known to those skilled in the art that various changes or equivalent substitutions may be made to these features and embodiments without departing from the spirit and scope of the present invention. In addition, under the teachings of the present invention, these features and embodiments may be modified to adapt to specific circumstances and materials without departing from the spirit and scope of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed herein, and all embodiments falling within the scope of the claims of this application are within the scope of protection of the present invention.

Claims

1. A reel stepless speed regulation structure, characterized in that: It includes a driving pulley connected to a driving wheel, a passive pulley connected to the driving pulley through a connecting structure, a bearing connected to the passive pulley, a bearing seat for placing the bearing, and an adjusting structure for adjusting the distance between the driving pulley and the passive pulley; A belt is arranged between the driving pulley and the passive pulley, and the adjusting structure is connected to the bearing seat. The adjusting structure drives the passive pulley to move by adjusting the position of the bearing seat, thereby adjusting the distance between the driving pulley and the passive pulley.

2. The reel stepless speed regulation structure according to claim 1, characterized in that: The adjustment structure includes an adjustment plate connected to the bearing seat, a push-pull rod rotatably connected to one end of the adjustment plate, and an adjustment column rotatably connected to the other end of the adjustment plate; The push-pull rod is telescopically driven to drive the adjustment plate to rotate relative to the adjustment column to adjust the position of the bearing seat.

3. The reel stepless speed regulation structure according to claim 2, characterized in that: A first limiting portion is arranged on the adjustment plate toward the bearing seat, and a second limiting portion is arranged on the bearing seat corresponding to the first limiting portion, and the first limiting portion and the second limiting portion are kept in contact with each other to limit the passive pulley from being away from the active pulley; The push-pull rod is telescopically driven to drive the adjustment plate to rotate relative to the adjustment column, and the passive pulley moves relative to the active pulley.

4. The reel stepless speed regulation structure according to claim 3, characterized in that: The abutting position of the first limiting portion and the second limiting portion is away from the driving pulley, and the belt moves toward the connecting structure along the driving pulley and the driven pulley; The abutting position of the first limiting portion and the second limiting portion is close to the driving pulley, and the belt is away from the connecting structure along the driving pulley and the driven pulley.

5. The reel stepless speed regulation structure according to claim 3, characterized in that: The first limiting portion is a protrusion facing the bearing seat, and the second limiting portion is a groove matching the protrusion.

6. The reel stepless speed regulation structure according to claim 2, characterized in that: The push-pull rod is connected to the control end of the cab through a control structure.

7. The reel stepless speed regulation structure according to claim 1, characterized in that: It also includes an elastic component arranged between the driving pulley and the driven pulley, the elastic force of the elastic component drives the driven pulley away from the driving pulley, and the adjustment structure restricts the driven pulley from being away from the driving pulley.

8. The reel stepless speed regulation structure according to claim 7, characterized in that: The elastic component is a spring arranged around the connecting structure, and the spring abuts between the driving pulley and the passive pulley to keep in a tight state, so that the elastic force forces the passive pulley to move away from the driving pulley.

9. The reel stepless speed regulation structure according to claim 1, characterized in that: The connection structure comprises an inner spline and an outer spline, wherein the outer spline is arranged on the driving pulley, and the inner spline is arranged on the driven pulley, and the inner spline moves along the outer spline to drive the driven pulley to move relative to the driving pulley.

10. A harvester, comprising the reel stepless speed regulation structure according to any one of claims 1 to 9, characterized in that: Also included are a driving wheel connected to the driving pulley, a tensioning structure, and a reel; The reel is provided with a reel driven pulley, and the reel driven pulley is connected to the reel stepless speed regulating structure through the belt; the tensioning structure is located between the reel stepless speed regulating structure and the reel driven pulley, and is used to maintain the tension of the belt; The driving wheel drives the active pulley to rotate, and drives the passive pulley of the reel to rotate through the belt, that is, drives the reel to rotate.

11. The harvester according to claim 10, characterized in that: The driving wheel is connected to the driving pulley through a transmission shaft. The driving wheel and the driving pulley are respectively arranged at two ends of the transmission shaft. The driving wheel drives the driving pulley to rotate through the transmission shaft.

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