Variable-speed controllable grain discharging wheel structure

Abstract

The utility model discloses a variable-speed controllable grain discharging wheel structure which comprises a grain discharging section, a grain discharging space is arranged in the grain discharging section, at least one set of grain discharging device is arranged at an inlet of the grain discharging space, the grain discharging device comprises four grain discharging wheels arranged in parallel, the grain discharging wheels are connected with first chain wheels through rotating shafts, and the first chain wheels are connected with second chain wheels through rotating shafts. Four second chain wheels are arranged below the four first chain wheels, a third chain wheel is parallel to the first chain wheels, the chain is connected with the four first chain wheels, the four second chain wheels and the third chain wheel to form a chain wheel set, the third chain wheel is a driving wheel, and the driving wheel is connected with a variable frequency motor through a rotating shaft. According to the structure, the four grain discharging wheels form a cooperative working unit. Through precise control of the variable-speed motor, the four grain discharging wheels can achieve highly synchronous variable-speed operation. In addition, the structure adopts high-quality combination of the chain wheel and the chain, so that the stability and the efficiency of power transmission are ensured.

Description

Technical Field

[0001] This utility model relates to the technical field of grain dryers, specifically to a variable speed controllable grain discharge wheel structure. Background Technology

[0002] Grain dryers, as key equipment in modern agricultural production, mainly consist of, from bottom to top, a main frame (or base), a grain discharge box (or discharge section), a drying box (or drying section), a tempering box (or tempering section), and an upper auger (or screw conveyor). To ensure the safety of grain during transportation and prevent damage caused by excessively long drop channels, a grain discharge wheel device is usually designed at the discharge port between the top of the discharge section and the drying section. This effectively guides the grain falling from the drying section, ensuring its smooth entry into the grain discharge box.

[0003] Given the spatial characteristics of the grain discharge port, this area is typically equipped with multiple discharge rollers, which are usually driven by independent motors with fixed rotational speeds. However, this structural design limits the adaptability of the discharge rollers to different grain drying scenarios and conditions. For example, when processing large grains (such as corn) and small grains (such as rapeseed), the fixed-speed discharge rollers cannot adjust the discharge speed according to the grain characteristics, thus affecting the discharge efficiency.

[0004] To address the aforementioned technical issues, we offer a variable-speed controllable grain discharge wheel structure to solve these problems. Utility Model Content

[0005] To address the problems existing in the prior art, this utility model provides a variable-speed controllable grain discharge wheel structure, in which four grain discharge wheels form a collaborative working unit. Through precise control of the variable-speed motor, the four grain discharge wheels can achieve highly synchronized speed-changing operation. Furthermore, this structure employs a superior combination of sprockets and chains, ensuring smooth and efficient power transmission. Specifically, the second sprocket connected to the elastic structure, under the tensioning cooperation of the four second sprockets, effectively alleviates chain vibration caused by speed changes, significantly improving the grain discharge stability of the grain discharge wheel after speed changes.

[0006] To achieve the above objectives, this utility model employs a variable speed controllable grain discharge wheel structure, including a grain discharge section with a grain discharge space. The diameter of the grain discharge space gradually decreases along the grain discharge path. At least one set of grain discharge devices is provided at the entrance of the grain discharge space. Each grain discharge device includes four parallel grain discharge wheels. The outer circumferential surface of each grain discharge wheel has several grain discharge plates. The grain discharge wheels are connected to a first sprocket via a rotating shaft. Four second sprockets are provided below the four first sprockets. A third sprocket is arranged parallel to the first sprockets. A chain connects the four first sprockets, the four second sprockets, and the third sprocket to form a sprocket group. The third sprocket is a drive wheel, which is connected to a variable frequency motor via a rotating shaft. A limiting plate is installed on the housing of the grain discharge section. The limiting plate has a vertical limiting groove. One end of a first spring is fixed to the bottom of the limiting groove, while the other end extends upward and is connected to a buffer plate. One of the second sprockets is connected to the buffer plate via a rotating shaft so that the second sprocket moves up and down with the buffer plate.

[0007] The aforementioned structure comprises four grain discharge rollers forming a collaborative unit. Through precise control of a variable-speed motor, these four rollers achieve highly synchronized speed-changing operation. Furthermore, the structure employs a superior combination of sprockets and chains, ensuring smooth and efficient power transmission. Specifically, the second sprocket connected to the elastic structure, under the tensioning coordination of the four second sprockets, effectively mitigates chain vibration caused by speed changes, significantly improving the grain discharge stability of the rollers after speed shifts.

[0008] As a further optimization of the above scheme, the chains between two adjacent first sprockets are arranged in an alternating manner. Through the alternating chain structure, the tensioning function of the chain is achieved.

[0009] As a further optimization of the above solution, the first spring has a vertically arranged telescopic rod inside. This telescopic rod includes a fixed cylinder with a receiving cavity inside. Inside the receiving cavity are a support block, a second spring connected to the support block, and a sliding rod connected to the second spring. One end of the sliding rod is fixed to a buffer plate. The outer surface of the second spring contacts the inner wall of the receiving cavity. The support block and the inner wall of the receiving cavity are fixedly fitted. The design of the telescopic rod and the second spring provides a stable limiting function for the second sprocket in the vertical direction. This effectively limits the vertical movement of the second sprocket after being subjected to vibration and avoids unnecessary offset of the second sprocket in other directions due to vibration, thereby ensuring the stability and reliability of the overall device.

[0010] As a further optimization of the above solution, a fixing block is provided below the fixing cylinder, and an extension cylinder is provided on the upper surface of the fixing block. One end of the extension cylinder extends into the interior of the fixing cylinder, and the fixing cylinder and the extension cylinder are threaded together. The outer surface of the fixing cylinder is provided with anti-slip texture. Through the threaded engagement structure, this utility model achieves precise vertical position adjustment between the fixing cylinder and the extension cylinder. This allows workers to easily adjust the height of the fixing cylinder according to actual work needs, thereby controlling the total vertical height of the telescopic rod and ensuring that the second sprocket is in the ideal tension position. This significantly improves the tensioning effect of the sprocket system and enhances the stability and operating efficiency of the entire sprocket assembly.

[0011] The variable speed controllable grain discharge wheel structure of this utility model has the following beneficial effects:

[0012] 1. This utility model discloses a variable-speed controllable grain discharge wheel structure, in which four grain discharge wheels form a collaborative working unit. Through precise control of a variable-speed motor, the four grain discharge wheels can achieve highly synchronized speed-changing operation. Furthermore, this structure employs a superior combination of sprockets and chains, ensuring smooth and efficient power transmission. Specifically, the second sprocket connected to the elastic structure, under the tensioning cooperation of the four second sprockets, effectively alleviates chain vibration caused by speed changes, significantly improving the grain discharge stability of the grain discharge wheel after speed changes.

[0013] 2. The variable-speed controllable grain discharge wheel structure of this utility model, through the design of a telescopic rod and a second spring, provides a stable limiting function for the second sprocket in the vertical direction. This effectively limits the vertical movement of the second sprocket after being subjected to vibration and avoids unnecessary offset of the second sprocket in other directions due to vibration, thereby ensuring the stability and reliability of the overall device.

[0014] 3. The variable-speed controllable grain discharge wheel structure of this utility model enables precise vertical position adjustment between the fixed cylinder and the extended cylinder. This allows operators to easily adjust the height of the fixed cylinder according to actual work needs, thereby controlling the total vertical height of the telescopic rod and ensuring that the second sprocket is in the ideal tension position. This significantly improves the tensioning effect of the sprocket system and enhances the stability and operating efficiency of the entire sprocket assembly.

[0015] Referring to the following description and accompanying drawings, specific embodiments of the present invention are disclosed in detail, indicating how the principles of the present invention can be adopted. It should be understood that the embodiments of the present invention are not limited in scope as a result, and the embodiments of the present invention include many changes, modifications and equivalents. Attached Figure Description

[0016] Figure 1 A schematic diagram of a variable speed controllable grain discharge wheel structure;

[0017] Figure 2 This is a schematic diagram of the grain discharge space in this utility model;

[0018] Figure 3 This is a schematic diagram of the grain discharge wheel in this utility model;

[0019] Figure 4 This is a schematic diagram of the grain discharge device in this utility model;

[0020] Figure 5 This is a schematic diagram of the structure of the variable speed motor in this utility model;

[0021] Figure 6 This is a schematic diagram of the structure of the limiting plate in this utility model;

[0022] Figure 7 This is a schematic diagram of the telescopic rod in this utility model;

[0023] Figure 8 This is a schematic diagram of the structure of the fixed cylinder in this utility model.

[0024] In the diagram: 1. Grain discharge section; 11. Grain discharge space; 2. Grain discharge device; 21. Grain discharge wheel; 22. Grain discharge plate; 23. First sprocket; 24. Second sprocket; 25. Third sprocket; 26. Variable speed motor; 3. Limiting plate; 31. Limiting groove; 32. First spring; 33. Buffer plate; 4. Telescopic rod; 41. Fixed cylinder; 411. Receiving cavity; 412. Support block; 413. Second spring; 414. Sliding rod; 42. Fixed block; 421. Extending cylinder. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. However, it should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit its scope.

[0026] It should be noted that when an element is referred to as "set on" or "provided with" another element, it can be directly on the other element or there may be an intermediate element. When an element is referred to as "connected to" or "connected to" another element, it can be directly connected to the other element or there may be an intermediate element at the same time. "Fixed connection" means fixed connection. There are many ways of fixed connection, which are not within the scope of protection of this document. The terms "vertical", "horizontal", "left", "right" and similar expressions used in this document are only for illustrative purposes and do not represent the only implementation method.

[0027] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art to which this invention pertains. The terms used in the description herein are for the purpose of describing particular embodiments only and are not intended to limit the invention. The term "and / or" as used herein includes any and all combinations of one or more of the associated listed items.

[0028] Please refer to the instruction manual appendix. Figure 1-8 This utility model provides a first embodiment of a variable-speed controllable grain discharge wheel structure. In this first embodiment, the focus is on the synchronous speed change of multiple sets of grain discharge wheels 21. Specifically, the grain discharge wheel 21 structure of this embodiment mainly consists of a grain discharge section 1 and a grain discharge device 2. The grain discharge section 1 has a grain discharge space 11 inside, the diameter of which gradually decreases along the grain discharge path to accommodate different grain discharge needs. At the entrance of the grain discharge space 11, at least one set of grain discharge devices 2 is provided. Each set of grain discharge devices 2 includes four parallel-arranged grain discharge wheels 21. The outer circumferential surface of each of the aforementioned grain discharge wheels 21 is equipped with several grain discharge plates 22 to achieve effective grain discharge.

[0029] To drive the grain discharge device 2 with variable speed control, this embodiment cleverly employs a combination of sprockets and chains. Specifically, each grain discharge wheel 21 is connected to a first sprocket 23 via a rotating shaft, and four second sprockets 24 are located below the four first sprockets 23. Furthermore, a third sprocket 25 is positioned parallel to the first sprockets 23, and the four first sprockets 23, four second sprockets 24, and third sprocket 25 are connected to form a complete sprocket assembly via a chain. The third sprocket 25 serves as the driving wheel, connected to a variable frequency motor via a rotating shaft, thereby achieving precise variable speed control of the entire sprocket assembly.

[0030] In summary, the first embodiment uses four grain discharge rollers 21 to form a cooperating unit. Through the precise control of the variable speed motor 26, the four grain discharge rollers 21 can achieve highly synchronized speed change operation. In addition, this structure adopts a high-quality combination of sprockets and chains, ensuring smooth and efficient power transmission.

[0031] Please refer to the instruction manual appendix. Figure 1-8 The present invention provides a second embodiment of a variable speed controllable grain discharge wheel structure. In the second embodiment, in order to ensure the tensioning effect of the sprocket group, one of the second sprockets 24 is improved.

[0032] The structure of the grain discharge wheel 21 in this embodiment includes a grain discharge section 1, which has a grain discharge space 11. The diameter of the grain discharge space 11 gradually decreases along the grain discharge path. At least one set of grain discharge devices 2 is provided at the entrance of the grain discharge space 11. The grain discharge device 2 is characterized in that it includes four parallel grain discharge wheels 21. The outer circumferential surface of the grain discharge wheel 21 has a plurality of grain discharge plates 22. The grain discharge wheel 21 is connected to a first sprocket 23 through a rotating shaft. Four second sprockets 24 are provided below the four first sprockets 23. A third sprocket 25 is parallel to the first sprockets 21. 3. The chain connects four first sprockets 23, four second sprockets 24, and a third sprocket 25 to form a sprocket group. The third sprocket 25 is the driving wheel, which is connected to a variable frequency motor via a rotating shaft. The limiting plate 3 is installed on the housing of the grain discharge section 1. The limiting plate is provided with a vertical limiting groove 31. One end of the first spring 32 is fixed to the bottom end of the limiting groove 31, and the other end extends upward and is connected to a buffer plate 33. One of the second sprockets 24 is connected to the buffer plate 33 via a rotating shaft so that the second sprocket 24 moves up and down with the buffer plate 33.

[0033] To improve stability during the grain discharge process, this invention features a specially designed buffer structure. A limiting plate 3 is installed on the shell of the grain discharge section 1, and the limiting plate 3 has a vertical limiting groove 31. One end of a first spring 32 is fixed to the bottom of the limiting groove 31, and the other end extends upward and connects to the buffer plate 33. One of the second sprockets 24 is connected to the buffer plate 33 via a rotating shaft. When the second sprocket 24 moves up or down, the buffer plate 33 adjusts accordingly and is buffered by the action of the first spring 32, effectively alleviating chain vibration caused by speed changes and significantly improving the grain discharge stability of the grain discharge wheel 21 after speed changes.

[0034] To further optimize the above structure, the chains between two adjacent first sprockets 23 are arranged in an interlaced manner. This interlaced chain structure not only enhances the chain tension but also improves the operating efficiency of the entire sprocket assembly.

[0035] Furthermore, to further enhance the vertical stability of the second sprocket 24, this design incorporates a telescopic rod 4 structure within the first spring 32. This telescopic rod 4 includes a fixed cylinder 41 and a sliding rod 414. The fixed cylinder 41 contains a receiving cavity 411, which houses a support block 412, the second spring 413, and the sliding rod 414. The outer surface of the second spring 413 is in close contact with the inner wall of the receiving cavity 411, while one end of the sliding rod 414 is fixed to the buffer plate 33. This provides a stable limiting function for the second sprocket 24 in the vertical direction, effectively restricting its movement range after vibration, thereby ensuring the stability and reliability of the overall device.

[0036] To facilitate adjustment of the height of the fixed cylinder 41 to accommodate different grain discharge requirements, this invention incorporates a combination of a fixing block 42 and an extension cylinder 421 below the fixed cylinder 41. One end of the extension cylinder 421 extends into the fixed cylinder 41, and the two are connected via a threaded connection. The outer surface of the fixed cylinder 41 is also provided with anti-slip textures to increase grip stability. This allows operators to easily adjust the height of the fixed cylinder 41 as needed, thereby achieving precise control over the height of the grain discharge wheel 21.

[0037] The variable speed controllable grain discharge wheel structure provided in this embodiment operates as follows:

[0038] S1. Start-up: Start the variable frequency motor to drive the third sprocket 25 to rotate, thereby driving the entire sprocket assembly to work.

[0039] S2. Grain discharge: As the sprocket assembly rotates, the grain discharge wheel 21 also rotates accordingly, pushing the grain from the inlet to the outlet of the grain discharge space 11 through the grain discharge plate 22.

[0040] S3. Speed ​​Variable: Adjust the speed of the variable frequency motor as needed to control the grain discharge rate.

[0041] S4. Buffer: During the speed change process, the buffer structure effectively reduces chain vibration and ensures the stability of grain discharge.

[0042] S5. Adjustment: By adjusting the height and position of the fixed cylinder 41, precise control of the height of the grain discharge wheel 21 can be achieved to meet different grain discharge requirements.

[0043] In summary, this utility model achieves precise control of the discharge rate and improves the stability of the discharge process through the speed change transmission of the sprocket set, the rotation of the discharge wheel 21, the stability improvement of the buffer structure, and the limiting function of the telescopic rod 4, providing a high-efficiency and stable discharge structure for the grain dryer industry.

[0044] 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 or improvements 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. A grain discharge wheel structure with controllable speed, comprising a grain discharge section (1), wherein the grain discharge section (1) has a grain discharge space (11), wherein the diameter of the grain discharge space (11) shrinks sequentially along the grain discharge path, and at least one set of grain discharge devices (2) is provided at the entrance of the grain discharge space (11), characterized in that: The grain discharge device (2) comprises four grain discharge wheels (21) arranged in parallel, the outer circumferential surface of the grain discharge wheel (21) is provided with a plurality of grain discharge plates (22), the grain discharge wheel (21) is connected to a first sprocket (23) via a rotating shaft, four second sprockets (24) are arranged below the four first sprockets (23), and a third sprocket (25) is arranged parallel to the first sprocket (23), a chain connects the four first sprockets (23), the four second sprockets (24) and the third sprocket (25) to form a sprocket group, and the The third sprocket (25) is a driving wheel, which is connected to a variable speed motor (26) via a rotating shaft. A limiting plate (3) is mounted on a housing of the grain discharge section (1). A vertical limiting groove (31) is provided on the limiting plate. One end of a first spring (32) is fixed to the bottom end of the limiting groove (31) and the other end extends upward and is connected to a buffer plate (33). A second sprocket (24) is connected to the buffer plate (33) via a rotating shaft so that the second sprocket (24) follows the buffer plate (33) to move up and down.

2. The grain discharge wheel structure with controllable speed according to claim 1 is characterized in that: The chains are arranged in a staggered manner between two adjacent first sprocket wheels (23).

3. The grain discharge wheel structure with controllable speed according to claim 2 is characterized in that: A vertically arranged telescopic rod (4) is provided inside the first spring (32), and the telescopic rod (4) comprises a fixing cylinder (41), a receiving chamber (411) is provided inside the fixing cylinder (41), a supporting block (412), a second spring (413) connected to the supporting block (412), and a sliding rod (414) connected to the second spring (413), and one end of the sliding rod (414) is fixed to the buffer plate (33).

4. The grain discharge wheel structure with controllable speed according to claim 3 is characterized in that: A fixing block (42) is provided below the fixing tube (41), and a protruding tube (421) is provided on the upper surface of the fixing block (42). One end of the protruding tube (421) penetrates into the interior of the fixing tube (41), and the fixing tube (41) and the protruding tube (421) are threadedly matched.

5. The grain discharge wheel structure with controllable speed according to claim 4 is characterized in that: The outer surface of the fixing tube (41) is provided with anti-slip patterns.

6. The grain discharge wheel structure with controllable speed according to claim 5 is characterized in that: The outer surface of the second spring (413) contacts the inner wall of the accommodating cavity (411).

7. The grain discharge wheel structure with controllable speed according to claim 6 is characterized in that: The support block (412) is fixedly matched with the inner wall of the accommodating cavity (411).

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