Air volume adjusting mechanism of combine harvester and combine harvester

Abstract

The utility model discloses an air volume adjusting mechanism of a combine harvester, which comprises a fan body, two ends of the fan body are respectively provided with an air door adjusting mechanism, and the two air door adjusting mechanisms are connected through a linkage mechanism. The air door adjusting mechanism comprises a base and a plurality of air baffles. An air inlet hole corresponding to the air inlet is formed in the middle of the base; the wind shields are rotationally connected with the base through connecting columns, an annular driving ring is arranged on the outer sides of the multiple wind shields, and the wind shields are connected with the driving ring through connecting rods. The air door adjusting mechanism further comprises a driving gear arranged on one side of the driving ring, an arc-shaped transmission rack is arranged on the side, close to the driving gear, of the driving ring, and the driving gear is meshed with the transmission rack. According to the utility model, the air volume can be more accurately and finely adjusted, and the continuous adjustment of the air volume can be realized, so that the requirements of multiple crops and multiple scenes can be better met.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to an air volume regulating mechanism for a combine harvester and the combine harvester. Background Art

[0002] The cleaning blower is a core component of a combine harvester's cleaning system. The airflow it generates leverages the aerodynamic properties of crops to remove light debris, such as short stalks, debris, and chaff, from the grains, ultimately leaving the grains pure.

[0003] Existing cleaning fans generally use the method of operating the left and right sides separately to adjust the air volume of the fan, which has the problems of low operating efficiency and poor synchronization of adjustment on both sides, which is not conducive to improving work efficiency and cleaning quality. The Chinese utility model patent with the authorization announcement number CN 218604027 U discloses a combine harvester air volume adjustment device and a combine harvester, "a linkage mechanism (4) is used to connect the left windshield (2) and the right windshield (3), and is used to make the left windshield (2) and the right windshield (3) move synchronously to the windshield position or the wind outlet position". Although the linkage mechanism can achieve synchronous air volume adjustment on both sides, during use, only a slight adjustment will cause the left windshield (2) and the right windshield (3) connected thereto to move to a large displacement and open and close, thereby causing the control of the air volume to be not precise enough and the air volume adjustment range to be small. In particular, for the cleaning of small grain crops, the air volume size is more sensitive; it cannot meet the customer's needs for multiple crops and multiple scenes. Utility Model Content

[0004] In view of the above-mentioned shortcomings of the prior art, the purpose of the present invention is to solve the problems of low air volume adjustment accuracy, small adjustment range and poor adaptability of the existing combine harvesters, and to provide a combine harvester air volume adjustment mechanism and a combine harvester, which can adjust the air volume more accurately and finely, and can realize continuous adjustment of the air volume, so as to better adapt to the needs of multiple crops and multiple scenarios.

[0005] In order to solve the above technical problems, the technical solution adopted by the present invention is as follows: an air volume adjustment mechanism for a combine harvester, comprising a fan body, with air inlets at both ends of the fan body, characterized in that a damper adjustment mechanism is provided at each end of the fan body, the two damper adjustment mechanisms are connected by a linkage mechanism, and the opening sizes of the two damper mechanisms can be synchronously adjusted through the linkage mechanism;

[0006] The cam is connected to the fan shaft by a connecting rod, and the connecting rod is connected to the fan shaft by a connecting rod, and the connecting rod is connected to the fan shaft by a connecting rod.

[0007] The damper adjustment mechanism also includes a driving gear arranged on one side of the driving ring, and the driving ring has an arc-shaped transmission rack on the side close to the driving gear, and the driving gear is engaged with the transmission rack; the driving gears of the two damper adjustment mechanisms are connected through the linkage mechanism; the linkage mechanism also has an adjustment handle.

[0008] Furthermore, several guide posts are evenly arranged around the base, and the several guide posts are located on the same circumference concentric with the base; on the drive ring, an arc-shaped hole is provided corresponding to each guide post, and the arc-shaped hole is also located on the same circumference concentric with the base; one end of the guide post is connected to the base, and the other end passes through the arc-shaped hole, and the guide post is in contact with both sides of the arc-shaped hole.

[0009] Furthermore, the wind shield has an arc-shaped notch at one end close to the fan shaft. When the wind shields are folded and closed, a through hole is formed at one end close to the fan shaft that can fit the fan shaft.

[0010] Furthermore, the linkage mechanism includes a linkage rod and multiple support plates, the support plates are fixedly connected to the harvester body, one end of the linkage rod passes through each support plate in turn and is rotatably connected to the support plate, and the two ends of the linkage rod are respectively fixedly connected to the two driving gears.

[0011] Furthermore, one end of the linkage rod passes through the driving gear and is fixedly connected to the adjustment handle.

[0012] Furthermore, one end of the adjustment handle is connected to the linkage rod, and the other end is connected to a limit plate; wherein, the limit plate is fixedly connected to the fan body, and an arc-shaped guide hole is provided on the limit plate, and the circle where the arc-shaped guide hole is located is located on the axial center line of the linkage rod; the end of the adjustment handle away from the linkage rod is fixedly connected to the limit plate by a locking bolt passing through the arc-shaped guide hole.

[0013] Furthermore, an arc scale layer is provided on the side of the arc guide hole facing away from the fan shaft, wherein the 0 scale line of the arc scale layer is located in the middle of the arc scale layer, and the angle of the center angle corresponding to the arc between the current position of the adjustment handle and the 0 scale line can be read through the arc scale layer.

[0014] A combine harvester air volume regulating mechanism and a combine harvester, characterized by comprising the above-mentioned combine harvester air volume regulating mechanism.

[0015] Compared with the existing technology, the utility model has the following advantages: simple structure, easy operation, improved air volume adjustment efficiency of the cleaning fan, and improved synchronization of the air volume adjustment on both sides; at the same time, it realizes relatively refined adjustment of the air volume and can realize continuous adjustment of the air volume, thereby being able to adapt to the machine operation needs in multiple crops and multiple scenarios. BRIEF DESCRIPTION OF THE DRAWINGS

[0016] Figure 1 It is a structural diagram of the present utility model.

[0017] Figure 2 It is a side view of the present utility model.

[0018] Figure 3 This is a structural diagram of the utility model when the wind door adjustment mechanism is opened.

[0019] Figure 4 This is a structural diagram of the stroke door adjustment mechanism of the present invention when it is closed.

[0020] Figure 5 It is a structural diagram of the drive ring in the utility model.

[0021] Figure 6 It is a structural schematic diagram of the wind shield in the utility model.

[0022] In the figure: 1 - fan body, 2 - base, 3 - wind shield, 4 - fan shaft, 5 - air inlet, 6 - connecting column, 7 - drive ring, 8 - connecting rod, 9 - drive gear, 10 - transmission rack, 11 - adjustment handle, 12 - guide column, 13 - arc-shaped hole, 14 - arc-shaped notch, 15 - linkage rod, 16 - support plate, 17 - limit plate, 18 - arc-shaped guide hole, 19 - locking bolt, 20 - arc-shaped scale layer. DETAILED DESCRIPTION

[0023] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0024] In order to make the purpose, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention. Obviously, the described embodiments are part of the embodiments of the present invention, not all of the embodiments. Therefore, the following detailed description of the embodiments of the present invention provided in the drawings is not intended to limit the scope of the utility model for protection, but merely represents the selected embodiments of the present invention. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0025] It should be noted that similar reference numerals and letters denote similar items in the following figures. Therefore, once an item is defined in one figure, it does not require further definition or explanation in subsequent figures. In the description of the present invention, it should be noted that the terms "center," "upper," "lower," "left," "right," "vertical," "horizontal," "inner," and "outer," etc., indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the figures, or the orientations or positional relationships in which the inventive product is typically placed when in use. These terms are intended solely to facilitate the description of the present invention and simplify the description. They do not indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation, and are therefore not to be construed as limiting the present invention. Furthermore, the terms "first," "second," and "third," etc., are used solely to distinguish descriptions and are not to be construed as indicating or implying relative importance. Furthermore, terms such as "horizontal" and "vertical" do not imply that a component must be absolutely horizontal or overhanging, but rather may be slightly tilted. For example, "horizontal" simply refers to a direction that is more horizontal than "vertical," and does not imply that the structure must be completely horizontal, but rather may be slightly tilted. In the description of the present invention, it should also be noted that, unless otherwise expressly specified or limited, the terms "disposed," "installed," "connected," and "connected" should be understood in a broad sense. For example, they may refer to fixed connections, detachable connections, or integral connections; they may refer to mechanical connections or electrical connections; they may refer to direct connections or indirect connections through an intermediate medium; and they may refer to internal communication between two components. Those skilled in the art will understand the specific meanings of the above terms in the present invention based on the specific circumstances.

[0026] Example: See Figures 1 to 6 A combine harvester air volume adjustment mechanism includes a fan body 1 having air inlets at both ends. A damper adjustment mechanism is provided on the outer sides of each end of the fan body 1. The two damper adjustment mechanisms are connected by a linkage mechanism, and the opening sizes of the two damper mechanisms can be synchronously adjusted through the linkage mechanism.

[0027] The damper adjustment mechanism includes a base 2 and multiple windshields 3. The base 2 is disc-shaped and fixedly connected to both ends (end faces) of the fan body 1. It can be rotatably mounted on the fan shaft 4 of the fan body 1 (i.e., it is clearance-fitted with the fan shaft 4), and its axis coincides with the axis of the fan shaft 4. An air inlet 5 corresponding to the air inlet is provided in the middle of the base 2; wherein the air inlet 5 is a mesh structure to block larger debris, etc. The windshields 3 are fan-shaped, with multiple windshields 3 evenly distributed around the fan shaft 4. The corresponding end of the windshield 3 away from the fan shaft 4 is rotatably connected to the base 2 via a connecting column 6. When the multiple windshields 3 are closed (i.e., the adjacent sides of two adjacent windshields 3 are fitted or formed), the whole can form a circular windshield surface and completely block the air inlet 5. During implementation, the wind shield 3 has an arc-shaped notch 14 at one end close to the fan shaft 4. When the multiple wind shields 3 are folded and closed, the multiple wind shields 3 form a through hole at one end close to the fan shaft 4 that can fit with the fan shaft 4 in a clearance, thereby avoiding interference with the fan shaft 4.

[0028] An annular drive ring 7 is provided on the outside of the multiple windshields 3. The drive ring 7 is coaxially arranged with the base 2 and is connected in a sliding manner, and can rotate around its axis. The other end of the windshield 3, which is away from the fan shaft 4, is connected to the drive ring 7 via a connecting rod 8, wherein the two ends of the connecting rod 8 are respectively connected to the windshield 3 and the drive ring 7 for rotation. When the drive ring 7 rotates, it can drive the multiple windshields 3 to rotate synchronously around the connecting column 6, thereby adjusting the size of the air inlet 5. During the assembly process, the windshield 3 and the drive ring 7 are both installed on the side of the base 2 away from the fan body 1, which is more convenient for installation, control, and maintenance.

[0029] To improve the stability of the drive ring 7 during rotation, several guide posts 12 are evenly distributed around the base 2, and these guide posts 12 are located on the same circumference concentric with the base 2. An arcuate hole 13 is provided on the drive ring 7 corresponding to each guide post 12, and these arcuate holes 13 are also located on the same circumference concentric with the base 2. One end of each guide post 12 is connected to the base 2, and the other end passes through the arcuate hole 13, with the guide post 12 and the two sides of the arcuate hole 13 being in contact. As an optimization, the end of the guide post 12 that passes through the arcuate hole 13 is enlarged to form a stopper to prevent the drive ring 7 from separating from the base 2.

[0030] The damper adjustment mechanism also includes a drive gear 9 disposed on one side of the drive ring 7. The drive ring 7 has an arcuate transmission rack 10 on a side adjacent to the drive gear 9, with the drive gear 9 meshing with the transmission rack 10. Rotating the drive gear 9 drives the drive ring 7, thereby pulling or pushing the windshield 3 to rotate via the connecting rod 8, thereby adjusting the damper opening and, therefore, the amount of air intake.

[0031] The drive gears 9 of the two damper adjustment mechanisms are connected via the linkage mechanism; this linkage mechanism also has an adjustment handle 11. The linkage mechanism comprises a connecting rod 15 and multiple support plates 16. The support plates 16 are spaced apart between the two drive gears 9, located in a vertical plane, and fixedly connected to the harvester body. One end of the connecting rod 15 passes through each support plate 16 in sequence and is rotationally connected to them. The two ends of the connecting rod 15 are respectively fixedly connected to the two drive gears 9. One end of the connecting rod 15 passes through the drive gear 9 and is fixedly connected to the adjustment handle 11.

[0032] One end of the adjustment handle 11 is connected to the linkage rod 15, and the other end is connected to a limit plate 17; wherein, the limit plate 17 is fixedly connected to the fan body 1, and an arc-shaped guide hole 18 is provided on the limit plate 17, and the circle in which the arc-shaped guide hole 18 is located is located on the axis of the linkage rod 15; the two drive gears 9 are connected by the linkage rod, so that the two drive gears 9 can rotate synchronously, thereby making the damper openings on both sides of the fan body 1 consistent and achieving synchronous adjustment of the air intake volume. The end of the adjustment handle 11 away from the linkage rod 15 is fixedly connected to the limit plate 17 by a locking bolt 19 that passes through the arc-shaped guide hole 18; in implementation, the locking bolt 19 is a screw and a butterfly nut, so that it can be loosened or tightened without the use of tools, which is more convenient to operate. On the side of the arc guide hole 18 facing away from the fan shaft 4, there is an arc scale layer, wherein the 0 scale line of the arc scale layer is located in the middle of the arc scale layer 20. Through the arc scale layer 20, the angle of the central angle corresponding to the arc between the current position of the adjustment handle 11 and the 0 scale line can be read; in this way, the accuracy of the damper size adjustment can be more effectively improved.

[0033] During the operation of the combine harvester, if it is necessary to adjust the air volume of the fan, loosen the butterfly nut at the end of the adjusting handle 11 and turn the adjusting handle 11. The adjusting handle 11 drives the linkage rod 15 to rotate, and the rotation of the linkage rod 15 drives the two driving gears 9 to rotate synchronously. The rotation of the driving gear 9 drives the rack engaged with it on the driving ring 7, and then drives the driving ring 7 to rotate. During the rotation of the driving ring 7, the arc-shaped hole 13 thereon slides along the guide column 12 on the base 2; at the same time, the rotation of the driving ring 7 drives the connecting rod 8 to move, and the connecting rod 8 drives the wind shield 3 to rotate around the connecting column 6 on the base 2. The wind shield 3 rotates to cover or open the air inlet 5 area in the middle of the base 2, thereby realizing the adjustment of the air volume of the fan. When the fan air volume is adjusted to the desired level, tighten the butterfly nut at the rear of the adjustment handle 11 again to secure the adjustment handle 11 and the linkage rod, which in turn secures the drive gear 9 and rack, ultimately securing the position of the windshield 3 in the damper mechanism. This provides greater stability in air volume control. When the windshield 3 completely covers the air inlet 5, the notch in the windshield 3 clears the fan shaft 4, preventing interference with the shaft.

[0034] After the fan air volume is adjusted to the desired setting, the bolt and butterfly nut at the rear of the adjustment handle 11 are used to lock it into the arc-shaped guide hole 18 provided on the limit plate 17 on the fan body, thereby fixing the position of the wind deflector 3 of the damper adjustment mechanism. The arc-shaped scale layer provided on the outside of the arc-shaped guide hole 18 can be used to calibrate the position of the adjustment handle 11 and the damper opening size. The damper opening and closing size can be calibrated by the angle of the marked handle rotation, allowing for quick adjustment of the damper opening size, further improving the accuracy of the air intake adjustment.

[0035] The utility model also discloses an air volume regulating mechanism for a combine harvester and a combine harvester, comprising the above-mentioned air volume regulating mechanism for the combine harvester.

[0036] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the present invention rather than to limit the technical solution. Ordinary technicians in this field should understand that those modifications or equivalent replacements of the technical solution of the present invention that do not depart from the purpose and scope of the technical solution of the present invention should be included in the scope of the claims of the present invention.

Claims

1. A wind volume regulating mechanism for a combine harvester, comprising a fan body with air inlets at both ends thereof, characterized in that: A damper adjustment mechanism is provided at each end of the fan body, and the two damper adjustment mechanisms are connected by a linkage mechanism, through which the opening size of the two damper mechanisms can be adjusted synchronously; The cam is connected to the fan shaft by a connecting rod, and the connecting rod is connected to the fan shaft by a connecting rod, and the connecting rod is connected to the fan shaft by a connecting rod. The damper adjustment mechanism also includes a driving gear arranged on one side of the driving ring, and the driving ring has an arc-shaped transmission rack on the side close to the driving gear, and the driving gear is engaged with the transmission rack; the driving gears of the two damper adjustment mechanisms are connected through the linkage mechanism; the linkage mechanism also has an adjustment handle.

2. The air volume regulating mechanism for a combine harvester according to claim 1, characterized in that: Several guide posts are evenly arranged around the base, and the guide posts are located on the same circumference concentric with the base; an arc-shaped hole is provided on the drive ring corresponding to each guide post, and the arc-shaped hole is also located on the same circumference concentric with the base; one end of the guide post is connected to the base, and the other end passes through the arc-shaped hole, and the guide post is in contact with both sides of the arc-shaped hole.

3. The air volume regulating mechanism for a combine harvester according to claim 1, characterized in that: The windshield has an arc-shaped notch at one end close to the fan shaft. When the windshields are folded and closed, a through hole is formed at one end close to the fan shaft to fit the fan shaft.

4. The air volume regulating mechanism for a combine harvester according to claim 1, characterized in that: The linkage mechanism includes a linkage rod and multiple support plates, the support plates are fixedly connected to the harvester body, one end of the linkage rod passes through each support plate in sequence and is rotatably connected to the support plate, and the two ends of the linkage rod are respectively fixedly connected to two driving gears.

5. The air volume regulating mechanism for a combine harvester according to claim 4, characterized in that: One end of the linkage rod passes through the driving gear and is fixedly connected to the adjustment handle.

6. The air volume regulating mechanism for a combine harvester according to claim 4, characterized in that: One end of the adjustment handle is connected to the linkage rod, and the other end is connected to a limit plate; wherein, the limit plate is fixedly connected to the fan body, and an arc-shaped guide hole is provided on the limit plate, and the circle where the arc-shaped guide hole is located is located on the axis line of the linkage rod; the end of the adjustment handle away from the linkage rod is fixedly connected to the limit plate by a locking bolt passing through the arc-shaped guide hole.

7. The air volume regulating mechanism for a combine harvester according to claim 6, characterized in that: An arc scale layer is provided on the side of the arc guide hole facing away from the fan shaft, wherein the 0 scale line of the arc scale layer is located in the middle of the arc scale layer. Through the arc scale layer, the angle of the center angle corresponding to the arc between the current position of the adjustment handle and the 0 scale line can be read.

8. A combine harvester, characterized in that: The invention comprises the wind volume regulating mechanism of a combine harvester as claimed in any one of claims 1 to 7.

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