Driving mechanism for sequentially opening and closing grain tank cover plates
By using an electric push rod and lever linkage structure to drive the harvester's grain tank cover to open and close sequentially, the problem of time-consuming and labor-intensive operation of large-capacity grain tank covers is solved, achieving automated opening and closing and simplifying the operation process.
Patent Information
- Application Number
- CN202423093293.0
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-13
- Publication Date
- 2025-11-18
- Estimated Expiration
- 2034-12-13
AI Technical Summary
Most existing harvester grain bin covers are fixed, and as the feeding volume increases, opening and closing the covers becomes time-consuming and labor-intensive, requiring manual operation.
The grain bin cover is opened and closed sequentially by using an electric push rod combined with a lever structure and a linkage mechanism. The electric push rod drives the opening and closing of the first and second covers, and the lever principle and linkage structure are used to achieve priority opening and closing of the covers.
It achieves automatic opening and closing of the grain tank cover without manual operation, is suitable for large-capacity grain tanks, and has a simple structure and is easy to operate.
Smart Images
Figure CN223553788U_ABST
Abstract
Description
Technical Field
[0001] This utility model relates to the technical field of harvesters, and in particular to a drive mechanism for the sequential opening and closing of grain bin covers. Background Technology
[0002] Currently, most combine harvester grain bin covers on the domestic market are fixed, and the volume of the grain bin is fixed. With the continuous development of agricultural mechanization, the feeding capacity of combine harvesters is increasing, and expanding the volume of the grain bin has become a development trend in the combine harvester industry. Most grain bin covers are opened and closed manually, which requires manual operation before harvesting, which is time-consuming and labor-intensive. Utility Model Content
[0003] To address the problem of time-consuming and labor-intensive opening and closing of the cover when expanding the volume of the grain bin in a harvester, the purpose of this utility model is to provide a drive mechanism for sequential opening and closing of the grain bin cover.
[0004] To achieve the above objectives, the technical solution adopted by this utility model is as follows:
[0005] A drive mechanism for the sequential opening and closing of a grain tank cover, comprising:
[0006] The grain tank body 1, the first grain tank cover 2, and the second grain tank cover 3 are provided. The grain tank body 1 is a box structure with an open top. The first grain tank cover 2 is hinged to the top edge of the left side panel of the grain tank body 1, and the second grain tank cover 3 is hinged to the top edge of the right side panel of the grain tank body 1.
[0007] Two rotating shafts are installed on both the front and rear side panels of the grain tank body 1.
[0008] The first swing arm 6 has a first rotating shaft mounting hole in its middle, a first power arm mounting hole at one end, and a first resistance arm mounting hole at the other end. The first swing arm 6 is provided with a first power arm and a first resistance arm. The length of the first power arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first power arm mounting hole. The length of the first resistance arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first resistance arm mounting hole. Each rotating shaft located on the left side of the grain tank body 1 is rotatably connected to the first rotating shaft mounting hole of the first swing arm 6.
[0009] The second swing arm 7 has a second pivot mounting hole in its middle, a second power arm mounting hole at one end, and a second resistance arm mounting hole at the other end. The second swing arm 7 has a second power arm and a second resistance arm. The length of the second power arm is the distance between the axes of the second pivot mounting hole and the second power arm mounting hole. The length of the second resistance arm is also the distance between the axes of the second pivot mounting hole and the second resistance arm mounting hole. Each pivot located on the right side of the grain tank body 1 is rotatably connected to a second pivot mounting hole of the second swing arm 7.
[0010] The first link 4, the second link 5, and the electric push rod 8 are connected in the following ways: one end of each electric push rod 8 is rotatably connected to the first power arm mounting hole of a first swing arm 6, and the other end of each electric push rod 8 is rotatably connected to the second power arm mounting hole of a second swing arm 7. The first resistance arm mounting hole of each first swing arm 6 is hinged to one end of a first link 4, and the other end of the first link 4 is hinged to the front or rear side of the first grain tank cover 2. The second resistance arm mounting hole of each second swing arm 7 is hinged to one end of a second link 5, and the other end of the second link 5 is hinged to the front or rear side of the second grain tank cover 3.
[0011] The aforementioned drive mechanism for the sequential opening and closing of the grain bin cover plates includes a first grain bin cover plate 2 and a second grain bin cover plate 3 arranged symmetrically on the left and right sides.
[0012] The aforementioned drive mechanism for the sequential opening and closing of the grain bin cover has two rotating shafts located on the front side panel of the grain bin body 1 at the same horizontal height and symmetrically arranged on the left and right, and two rotating shafts located on the rear side panel of the grain bin body 1 at the same horizontal height and symmetrically arranged on the left and right.
[0013] The aforementioned drive mechanism for the sequential opening and closing of the grain bin cover has the same length for the first resistance arm of any first swing arm 6 and the second resistance arm of any second swing arm 7.
[0014] In the aforementioned drive mechanism for the sequential opening and closing of the grain tank cover, the length of the first power arm of any first swing arm 6 is longer than the length of the second power arm of any second swing arm 7. During the opening and closing process of the first grain tank cover 2 and the second grain tank cover 3 driven by the electric push rod 8, the first grain tank cover 2 can be opened and closed preferentially.
[0015] In the aforementioned drive mechanism for the sequential opening and closing of the grain tank cover, the length of the first power arm of any first swing arm 6 is shorter than the length of the second power arm of a second swing arm 7. During the opening and closing process of the first grain tank cover 2 and the second grain tank cover 3 driven by the electric push rod 8, the second grain tank cover 3 can be opened and closed preferentially.
[0016] The aforementioned drive mechanism for the sequential opening and closing of the grain tank cover also includes a sensor 12. At least one sensor 12 is installed on the front and / or rear side panels of the grain tank body 1. When the first grain tank cover 2 is in the closed state, the sensor 12 abuts against the first power arm of a first swing arm 6.
[0017] The aforementioned drive mechanism for the sequential opening and closing of the grain tank cover also includes a sensor 12. At least one sensor 12 is installed on the front and / or rear side panels of the grain tank body 1. When the second grain tank cover 3 is in the closed state, the sensor 12 abuts against the second power arm of a second swing arm 7.
[0018] The aforementioned drive mechanism for the sequential opening and closing of the grain bin cover further includes: a limiting shaft 11. Two limiting shafts 11 are installed on both the front and rear side panels of the grain bin body 1. The two limiting shafts 11 on the front side panel of the grain bin body 1 are at the same horizontal height and are symmetrically arranged on the left and right. The two limiting shafts 11 on the rear side panel of the grain bin body 1 are at the same horizontal height and are symmetrically arranged on the left and right.
[0019] The aforementioned drive mechanism for the sequential opening and closing of the grain tank cover has two rotating shafts and two limiting shafts 11 located on the front side panel that are perpendicular to the front side panel, and two rotating shafts and two limiting shafts 11 located on the rear side panel that are perpendicular to the rear side panel. When the first grain tank cover 2 is in the open state, the first resistance arm of each first swing arm 6 abuts against a limiting shaft 11 located on the left side. When the second grain tank cover 3 is in the open state, the second resistance arm of each second swing arm 7 abuts against a limiting shaft 11 located on the right side.
[0020] Because this utility model employs the aforementioned technology, it has the following positive effects compared to existing technologies:
[0021] (1) This utility model adopts an electric push rod combined with a lever structure and a linkage structure to drive the opening and closing of the first grain box cover and the second grain box cover. There is no need for manual control of the opening and closing of the first grain box cover and the second grain box cover. It is suitable for harvesters with larger grain box volume. The linkage mechanism realizes the sequential opening and closing of the grain box covers on both sides. The structure is simple and the operation is convenient. Attached Figure Description
[0022] Figure 1 This is a schematic diagram of the structure of a grain bin cover opening and closing drive mechanism in a closed state according to the present invention.
[0023] Figure 2 This is a schematic diagram of the structure of a grain bin cover opening and closing drive mechanism in the fully open state.
[0024] Figure 3This is a schematic diagram of the structure of a drive mechanism for sequentially opening and closing grain tank covers, where the first grain tank cover is open and the second grain tank cover is closed.
[0025] In the attached diagram: 1. Grain tank body; 2. First grain tank cover; 3. Second grain tank cover; 4. First connecting rod; 5. Second connecting rod; 6. First swing arm; 7. Second swing arm; 8. Electric push rod; 11. Limiting shaft; 12. Sensor. Detailed Implementation
[0026] The present invention will be further described below with reference to the accompanying drawings and specific embodiments, but this is not intended to limit the present invention.
[0027] Please refer to Figures 1 to 3 The diagram illustrates a drive mechanism for the sequential opening and closing of a grain bin cover, comprising:
[0028] The grain tank body 1, the first grain tank cover 2, and the second grain tank cover 3 are provided. The grain tank body 1 is a box structure with an open top. The first grain tank cover 2 is hinged to the top edge of the left side panel of the grain tank body 1, and the second grain tank cover 3 is hinged to the top edge of the right side panel of the grain tank body 1.
[0029] Two rotating shafts are installed on both the front and rear side panels of the grain tank body 1.
[0030] The first swing arm 6 has a first rotating shaft mounting hole in its middle, a first power arm mounting hole at one end, and a first resistance arm mounting hole at the other end. The first swing arm 6 is provided with a first power arm and a first resistance arm. The length of the first power arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first power arm mounting hole. The length of the first resistance arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first resistance arm mounting hole. Each rotating shaft located on the left side of the grain tank body 1 is rotatably connected to the first rotating shaft mounting hole of the first swing arm 6.
[0031] The second swing arm 7 has a second pivot mounting hole in its middle, a second power arm mounting hole at one end, and a second resistance arm mounting hole at the other end. The second swing arm 7 has a second power arm and a second resistance arm. The length of the second power arm is the distance between the axes of the second pivot mounting hole and the second power arm mounting hole. The length of the second resistance arm is also the distance between the axes of the second pivot mounting hole and the second resistance arm mounting hole. Each pivot located on the right side of the grain tank body 1 is rotatably connected to a second pivot mounting hole of the second swing arm 7.
[0032] The first link 4, the second link 5, and the electric push rod 8 are connected in the following ways: one end of each electric push rod 8 is rotatably connected to the first power arm mounting hole of a first swing arm 6, and the other end of each electric push rod 8 is rotatably connected to the second power arm mounting hole of a second swing arm 7. The first resistance arm mounting hole of each first swing arm 6 is hinged to one end of a first link 4, and the other end of the first link 4 is hinged to the front or rear side of the first grain tank cover 2. The second resistance arm mounting hole of each second swing arm 7 is hinged to one end of a second link 5, and the other end of the second link 5 is hinged to the front or rear side of the second grain tank cover 3.
[0033] Furthermore, in a preferred embodiment, the first grain tank cover 2 and the second grain tank cover 3 are arranged symmetrically on the left and right sides.
[0034] Furthermore, in a preferred embodiment, the two pivots on the front panel of the grain tank body 1 are at the same horizontal height and are symmetrically arranged on the left and right, and the two pivots on the rear panel of the grain tank body 1 are at the same horizontal height and are symmetrically arranged on the left and right.
[0035] Furthermore, in a preferred embodiment, the length of the first resistance arm of any first swing arm 6 is the same as the length of the second resistance arm of a second swing arm 7.
[0036] Furthermore, in a preferred embodiment, the length of the first power arm of any first swing arm 6 is longer than the length of the second power arm of a second swing arm 7. During the opening and closing process of the first grain tank cover 2 and the second grain tank cover 3 driven by the electric push rod 8, the first grain tank cover 2 can be opened and closed preferentially.
[0037] Furthermore, in a preferred embodiment, the length of the first power arm of any first swing arm 6 is shorter than the length of the second power arm of a second swing arm 7. During the opening and closing process of the first grain tank cover 2 and the second grain tank cover 3 driven by the electric push rod 8, the second grain tank cover 3 can be opened and closed preferentially.
[0038] Furthermore, in a preferred embodiment, it further includes: a sensor 12, at least one sensor 12 is installed on the front side panel and / or rear side panel of the grain tank body 1, and when the first grain tank cover 2 is in the closed state, the sensor 12 abuts against the first power arm of a first swing arm 6.
[0039] Furthermore, in a preferred embodiment, it further includes: a sensor 12, at least one sensor 12 is installed on the front side panel and / or rear side panel of the grain tank body 1, and when the second grain tank cover 3 is in the closed state, the sensor 12 abuts against the second power arm of a second swing arm 7.
[0040] Furthermore, in a preferred embodiment, it further includes: limiting shafts 11, with two limiting shafts 11 installed on both the front and rear side panels of the grain tank body 1. The two limiting shafts 11 on the front side panel of the grain tank body 1 are located at the same horizontal height and are symmetrically arranged on the left and right, and the two limiting shafts 11 on the rear side panel of the grain tank body 1 are located at the same horizontal height and are symmetrically arranged on the left and right.
[0041] Furthermore, in a preferred embodiment, the two rotating shafts and two limiting shafts 11 located on the front side panel are all arranged perpendicular to the front side panel, and the two rotating shafts and two limiting shafts 11 located on the rear side panel are all arranged perpendicular to the rear side panel. When the first grain tank cover 2 is in the open state, the first resistance arm of each first swing arm 6 abuts against a limiting shaft 11 located on the left side. When the second grain tank cover 3 is in the open state, the second resistance arm of each second swing arm 7 abuts against a limiting shaft 11 located on the right side.
[0042] The above are merely preferred embodiments of the present invention and are not intended to limit the implementation methods and protection scope of the present invention.
[0043] Based on the above, this utility model also has the following embodiments:
[0044] In a further embodiment of this utility model, a drive mechanism for the sequential opening and closing of grain tank covers includes a grain tank body 1, a first grain tank cover 2, a second grain tank cover 3, a first connecting rod 4, a second connecting rod 5, a first swing arm 6, a second swing arm 7, and an electric push rod 8. The first grain tank cover 2, the second grain tank cover 3, the first swing arm 6, and the second swing arm 7 are hinged to the grain tank body 1 via pivots. The two ends of the first connecting rod 4 are respectively hinged to the first grain tank cover 2 and the first swing arm 6. The two ends of the second connecting rod 5 are respectively hinged to the second grain tank cover 3 and the second swing arm 7. The two ends of the electric push rod 8 are respectively hinged to the first swing arm 6 and the second swing arm 7.
[0045] In a further embodiment of this utility model, a linkage mechanism is used to realize the sequential opening and closing of the grain tank covers on both sides, which is simple in structure and easy to operate.
[0046] In a further embodiment of this utility model, combined with Figures 1 to 3As shown, the length of the first power arm of any first swing arm 6 is longer than the length of the second power arm of any second swing arm 7. During the opening and closing process of the first grain tank cover 2 and the second grain tank cover 3 driven by the electric push rod 8, the first grain tank cover 2 can be opened and closed preferentially. The working process of this utility model is as follows: When the harvester needs to open the grain tank cover, the electric push rod 8 begins to retract. At this time, the tension on the first swing arm 6 and the second swing arm 7 is equal. The first power arm of the first swing arm 6 is longer than the second power arm of the second swing arm 7. The first swing arm 6 drives the first grain tank cover 2 to open through the first connecting rod 4. When the first swing arm 6 collides with the limiting shaft 11 on the grain tank body 1, the first grain tank cover 2 is opened to the correct position. The electric push rod 8 continues to retract. The second swing arm 7 drives the second grain tank cover 3 to open through the second connecting rod 5. When the second swing arm 7 collides with the limiting shaft 11 on the grain tank body 1, the second grain tank cover 3 is opened to the correct position, thus completing the sequential opening of the grain tank cover.
[0047] When the harvester closes the grain tank cover, the electric push rod 8 extends. At this time, the tension on the first swing arm 6 and the second swing arm 7 is equal. The lever arm of the first swing arm 6 is less than that of the second swing arm 7. The second swing arm 7 drives the second grain tank cover 3 to close through the second connecting rod 5. After the second grain tank cover 3 is closed, the electric push rod 8 continues to extend. The first swing arm 6 drives the first grain tank cover 2 to close through the first connecting rod 4. When the first swing arm 6 collides with the sensor on the grain tank body 1, the first grain tank cover 2 closes in place, completing the sequential closing of the two grain tank covers.
[0048] In summary, the sequence of actions to complete the opening and closing of the grain tank cover is as follows: the first grain tank cover 2 opens, the second grain tank cover 3 opens, the second grain tank cover 3 closes, and the first grain tank cover 2 closes.
[0049] In a further embodiment of this utility model, a lever structure combined with a linkage structure is used to realize the sequential opening and closing action of the two grain tank covers. According to the lever principle, for the lever to be balanced, the two torques acting on the lever (the product of force and lever arm) must be equal in magnitude. That is: power × power arm = resistance × resistance arm. In this utility model, the first grain tank cover 2 and the second grain tank cover 3 have the same structure and are symmetrically arranged on the left and right. The two pivots on the front side panel of the grain tank body 1 are at the same horizontal height and are symmetrically arranged on the left and right. The two pivots on the rear side panel of the grain tank body 1 are at the same horizontal height and are symmetrically arranged on the left and right. The length of the first resistance arm of any first swing arm 6 is the same as the length of the second resistance arm of a second swing arm 7, thus achieving left-right symmetry in the length and installation position of the first linkage 4 and the second linkage 5. Both the first swing arm 6 and the second swing arm 7 are lever structures. With the above structure, the resistance and resistance arm sizes on the left and right sides can be the same. The two ends of the electric push rod 8 are respectively connected to the first power arm mounting hole of the first swing arm 6 and the second power arm mounting hole of the second swing arm 7. With the hinged connection, the power on both the left and right sides can be the same during the extension and retraction of the electric push rod 8. Substituting into the formula: Power × Power Arm = Resistance × Resistance Arm; due to the power, resistance, and resistance arm on both sides, the opening and closing of the grain tank covers on both sides can be achieved by changing the size of the power arms on the left and right sides. For example, if the length of the first power arm of any first swing arm 6 is longer than the length of the second power arm of any second swing arm 7, the first grain tank cover 2 can be opened and closed first when the electric push rod 8 drives the opening and closing of the first grain tank cover 2 and the second grain tank cover 3; if the length of the first power arm of any first swing arm 6 is shorter than the length of the second power arm of any second swing arm 7, the second grain tank cover 3 can be opened and closed second when the electric push rod 8 drives the opening and closing of the first grain tank cover 2 and the second grain tank cover 3.
[0050] In a further embodiment of this utility model, at least one sensor 12 is installed on the front and / or rear side panels of the grain tank body 1; the length of the first power arm of any first swing arm 6 is longer than the length of the second power arm of any second swing arm 7, and the first grain tank cover 2 and the second grain tank cover 3 can be opened and closed preferentially by driving the electric push rod 8; when the first grain tank cover 2 is in the closed state, the sensor 12 abuts against the first power arm of any first swing arm 6; the length of the first power arm of any first swing arm 6 is shorter than the length of the second power arm of any second swing arm 7, and the second grain tank cover 3 can be opened and closed preferentially by driving the first grain tank cover 2 and the second grain tank cover 3 by driving the electric push rod 8; when the second grain tank cover 3 is in the closed state, the sensor 12 abuts against the second power arm of any second swing arm 7.
[0051] In a further embodiment of this utility model, at least one sensor 12 is installed on the front and / or rear side panels of the grain tank body 1. The sensor 12 may be a pressure sensor and can be used to detect whether the first grain tank cover 2 and / or the second grain tank cover 3 are in a fully closed state.
[0052] In a further embodiment of this utility model, preferably, sensors 12 can be provided on the left and right sides of the front and / or rear side panels of the grain tank body 1, respectively, to detect the opening and closing states of the first grain tank cover 2 and the second grain tank cover 3, thereby obtaining whether the first grain tank cover 2 and the second grain tank cover 3 are open or fully closed.
[0053] In a further embodiment of this utility model, if the utility model is designed to prioritize the opening and closing of the first grain tank cover 2, a sensor 12 can be installed on the right side of the front and / or rear side panels of the grain tank body 1. When the first grain tank cover 2 is opened first and fully, the second grain tank cover 3 opens, and the second swing arm 7 disengages from the sensor 12, thus knowing the opening status of the first grain tank cover 2 and the second grain tank cover 3. When the first grain tank cover 2 is closed first and fully, the second grain tank cover 3 closes. When the second grain tank cover 3 is fully closed, the second swing arm 7 abuts against the sensor 12, thus knowing whether the first grain tank cover 2 and the second grain tank cover 3 are fully closed, and simultaneously stopping the continued extension of the electric push rod 8.
[0054] In a further embodiment of this utility model, if the utility model is designed to prioritize the opening and closing of the second grain tank cover 3, a sensor 12 can be provided on the left side of the front and / or rear side panels of the grain tank body 1. Figures 1 to 3 As shown, when the second grain tank cover 3 is opened first and fully, the first grain tank cover 2 opens, and the first swing arm 6 disengages from the sensor 12, thus knowing the open status of the first grain tank cover 2 and the second grain tank cover 3; when the second grain tank cover 3 is closed first and fully, the first grain tank cover 2 closes. When the first grain tank cover 2 is fully closed, the first swing arm 6 abuts against the sensor 12, thus knowing whether the first grain tank cover 2 and the second grain tank cover 3 are fully closed, and simultaneously stopping the continued extension of the electric push rod 8.
[0055] In a further embodiment of this utility model, an electric push rod 8 is used to drive the opening and closing of the first grain tank cover 2 and the second grain tank cover 3, eliminating the need for manual control of the opening and closing of the first grain tank cover 2 and the second grain tank cover 3. This is suitable for harvesters with larger grain tank volumes. The linkage mechanism is used to realize the sequential opening and closing of the grain tank covers on both sides. The structure is simple and the operation is convenient.
[0056] In a further embodiment of this utility model, the synchronous opening and closing of the first grain tank cover 2 and the second grain tank cover 3 can be achieved by adding multiple electric push rods or adding a linkage mechanism, but this will lead to increased costs and a more complex structure.
[0057] The above are merely preferred embodiments of the present utility model and are not intended to limit the implementation methods and protection scope of the present utility model. Those skilled in the art should realize that any equivalent substitutions and obvious changes made based on the description and illustrations of the present utility model should be included within the protection scope of the present utility model.
Claims
1. A driving mechanism for the sequential opening and closing of grain bin covers, characterized in that, include: The grain box body (1), the first grain box cover (2) and the second grain box cover (3) are provided. The grain box body (1) is a box structure with an open top. The top edge of the left side panel of the first grain box cover (2) and the grain box body (1) are hinged together. The top edge of the right side panel of the second grain box cover (3) and the grain box body (1) are hinged together. Two rotating shafts are installed on the front and rear side panels of the grain bin body (1); The first swing arm (6) has a first rotating shaft mounting hole in the middle, a first power arm mounting hole at one end, and a first resistance arm mounting hole at the other end. The first swing arm (6) has a first power arm and a first resistance arm. The length of the first power arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first power arm mounting hole. The length of the first resistance arm is the distance between the axis of the first rotating shaft mounting hole and the axis of the first resistance arm mounting hole. Each rotating shaft located on the left side of the grain tank body (1) is rotatably connected to the first rotating shaft mounting hole of the first swing arm (6). The second swing arm (7) has a second rotating shaft mounting hole in the middle, a second power arm mounting hole at one end, and a second resistance arm mounting hole at the other end. The second swing arm (7) is provided with a second power arm and a second resistance arm. The length of the second power arm is the distance between the axis of the second rotating shaft mounting hole and the axis of the second power arm mounting hole. The length of the second resistance arm is the distance between the axis of the second rotating shaft mounting hole and the axis of the second resistance arm mounting hole. Each rotating shaft located on the right side of the grain tank body (1) is rotatably connected to the second rotating shaft mounting hole of the second swing arm (7). The first link (4), the second link (5), and the electric push rod (8) are connected in a rotatable manner. One end of each electric push rod (8) is rotatably connected to the first power arm mounting hole of a first swing arm (6), and the other end of each electric push rod (8) is rotatably connected to the second power arm mounting hole of a second swing arm (7). The first resistance arm mounting hole of each first swing arm (6) is hinged to one end of a first link (4), and the other end of the first link (4) is hinged to the front or rear side of the first grain tank cover (2). The second resistance arm mounting hole of each second swing arm (7) is hinged to one end of a second link (5), and the other end of the second link (5) is hinged to the front or rear side of the second grain tank cover (3).
2. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 1, characterized in that, The first grain bin cover (2) and the second grain bin cover (3) are symmetrically arranged on the left and right sides.
3. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 2, characterized in that, The two pivots on the front panel of the grain bin body (1) are at the same horizontal height and are symmetrically arranged on the left and right. The two pivots on the rear panel of the grain bin body (1) are at the same horizontal height and are symmetrically arranged on the left and right.
4. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 3, characterized in that, The length of the first resistance arm of any first swing arm (6) is the same as the length of the second resistance arm of a second swing arm (7).
5. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 4, characterized in that, If the length of the first power arm of any first swing arm (6) is longer than the length of the second power arm of a second swing arm (7), the first grain tank cover (2) can be opened and closed preferentially by driving the first grain tank cover (2) and the second grain tank cover (3) through the electric push rod (8).
6. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 4, characterized in that, The length of the first power arm of any first swing arm (6) is shorter than the length of the second power arm of a second swing arm (7). During the opening and closing of the first grain tank cover (2) and the second grain tank cover (3) driven by the electric push rod (8), the second grain tank cover (3) can be opened and closed preferentially.
7. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 5, characterized in that, Also includes: At least one sensor (12) is installed on the front and / or rear side panels of the grain tank body (1). When the first grain tank cover (2) is closed, the sensor (12) abuts against the first power arm of a first swing arm (6).
8. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 6, characterized in that, Also includes: At least one sensor (12) is installed on the front and / or rear side panels of the grain tank body (1). When the second grain tank cover (3) is closed, the sensor (12) abuts against the second power arm of a second swing arm (7).
9. The driving mechanism for sequentially opening and closing grain bin covers according to any one of claims 1 to 8, characterized in that, Also includes: Limiting shafts (11): Two limiting shafts (11) are installed on the front and rear side panels of the grain box body (1). The two limiting shafts (11) on the front side panel of the grain box body (1) are at the same horizontal height and are symmetrically arranged on the left and right. The two limiting shafts (11) on the rear side panel of the grain box body (1) are at the same horizontal height and are symmetrically arranged on the left and right.
10. The driving mechanism for sequential opening and closing of the grain bin cover according to claim 9, characterized in that, The two rotating shafts and two limiting shafts (11) located on the front side panel are all perpendicular to the front side panel. The two rotating shafts and two limiting shafts (11) located on the rear side panel are all perpendicular to the rear side panel. When the first grain tank cover (2) is in the open state, the first resistance arm of each first swing arm (6) abuts against a limiting shaft (11) located on the left side. When the second grain tank cover (3) is in the open state, the second resistance arm of each second swing arm (7) abuts against a limiting shaft (11) located on the right side.