Anti-winding structure of conveying device of small harvester

Abstract

The utility model discloses an anti-winding structure of a conveying device of a small harvester, which comprises a conveying bin, a first main shaft and a second main shaft which are parallel to each other are respectively mounted at two ends of the conveying bin, and the axial directions of the first main shaft and the second main shaft are perpendicular to the length direction of the conveying bin. A driving chain wheel and a driven chain wheel for mounting chain harrows are respectively arranged on the first main shaft and the second main shaft; the anti-twining device is characterized in that a first anti-twining plate and a second anti-twining plate are arranged between the first main shaft and the second main shaft, the first anti-twining plate and the second anti-twining plate are connected with the bin wall of the conveying bin and are parallel to the bottom face of the conveying bin, and a gap is formed between the adjacent sides of the first anti-twining plate and the second anti-twining plate to form a leakage hole; the opposite sides are in clearance fit with the first main shaft and the second main shaft respectively. The anti-winding conveying bin is simple in structure, better in anti-winding effect, higher in conveying efficiency and easy to apply and popularize.

Description

Technical Field

[0001] The utility model relates to the technical field of harvesters, in particular to an anti-entanglement structure of a conveying device of a small harvester. Background Art

[0002] The conveying bin of the harvester is responsible for conveying the grains from the header to the thresher, in which a chain rake is installed to drive the grains to move. The chain rake is generally driven by the sprockets on the rotating shafts at both ends of the conveying bin. In the process of conveying the grains, the stalks of the grains can easily be entangled in the rotating shaft, thereby increasing the rotational resistance of the shaft and even causing damage to the shaft, seriously affecting the normal use of the harvester. Therefore, the prior art limits the height of the stalks of the grains to prevent them from being entangled in the shaft by placing a partition horizontally in the middle of the chain rake. This prior art reduces the amount of stalks entangled in the shaft to a certain extent. However, the partition in the prior art is set throughout the length, dividing the conveying bin into two relatively independent spaces, upper and lower. As a result, part of the grains moving with the chain rake are drawn into the upper space and cannot fall into the lower space in time and return to the header with the chain rake, thereby affecting the conveying efficiency of the conveying bin. Utility Model Content

[0003] In view of the above-mentioned deficiencies in the prior art, the purpose of the present invention is to provide an anti-entanglement structure for a conveying device of a small harvester, so as to solve the problems of poor anti-entanglement effect and low conveying efficiency of the conveying bin in the prior art.

[0004] In order to solve the above technical problems, the technical solution adopted by the utility model is as follows: an anti-entanglement structure of a small harvester conveying device, including a conveying bin, at both ends of which are respectively installed a first main shaft and a second main shaft which are parallel, wherein the axial direction of the first main shaft and the second main shaft is perpendicular to the length direction of the conveying bin, and a driving sprocket and a driven sprocket for installing a chain rake are respectively provided on the first main shaft and the second main shaft; it is characterized in that: a first anti-entanglement plate and a second anti-entanglement plate are provided between the first main shaft and the second main shaft, the first anti-entanglement plate and the second anti-entanglement plate are connected to the bin wall of the conveying bin and are parallel to the bottom surface of the conveying bin, and there is a spacing between the adjacent sides of the first anti-entanglement plate and the second anti-entanglement plate to form a leak hole, and the opposite sides are respectively matched with the first main shaft and the second main shaft in a clearance.

[0005] As an optimization, a sleeve is sleeved on the outer side of the first main shaft, and one end of the first anti-wrap plate facing away from the second anti-wrap plate is loosely matched with the sleeve.

[0006] As an optimization, the two ends of the first main shaft are rotatably mounted on the opposite side walls of the conveying bin through bearing seats, the driving sprocket is fixedly arranged in the middle of the first main shaft, and limiting grooves are arranged on the end faces of both ends of the driving sprocket, and corresponding limiting bosses are arranged on the side of the two bearing seats close to the driving sprocket, and the sleeve is arranged between the driving sprocket and the bearing seat, one end of the sleeve is fixedly mounted on the limiting boss, and the other end is inserted into the limiting groove and matches with the limiting groove clearance.

[0007] As an optimization, the two ends of the second main shaft are fixedly connected to the opposite side walls of the conveying bin, and a ball bearing is sleeved in the middle thereof, and the driven sprocket is fixedly sleeved on the outer ring of the ball bearing.

[0008] As an optimization, strip holes are opened along the length direction of the conveying bin on the opposite side walls, and an adjustment device is installed on the outer wall of the conveying bin at the position corresponding to the strip holes. The two ends of the second main shaft are respectively passed through the strip holes on the corresponding sides and connected to an adjustment seat. The adjustment device is connected to the adjustment seat and can drive the adjustment seat to move, so that the adjustment seat drives the second main shaft to slide along the strip hole.

[0009] As an optimization, the adjustment device includes a fixing seat fixed on the side wall of the conveying bin, and an adjusting bolt threadedly mounted on the fixing seat, one end of the adjusting bolt is connected to the adjusting seat, and the adjusting bolt can push the adjusting seat to move when it rotates.

[0010] As an optimization, the ends of the first anti-winding plate and the second anti-winding plate facing away from each other are each provided with a bent portion bent to one side, the bent portion is bent in a direction close to a chain rake running from the driven sprocket to the driving sprocket, and the bent portion is gap-matched with the sleeve.

[0011] Compared with the prior art, the utility model has the following advantages: by arranging two independent first anti-winding plates and second anti-winding plates, a leak hole is formed between the first anti-winding plate and the second anti-winding plate, so that the grains rolled up above can fall to the bottom in time and be transported by the chain rake; at the same time, the first anti-winding plate and the second anti-winding plate are respectively matched with the gap between the first main shaft and the second main shaft, so as to more effectively prevent the stems of the grains from being difficult to pass through the gap and being entangled on the main shaft, thus achieving a good anti-winding effect and improving the transportation efficiency of the conveying bin. BRIEF DESCRIPTION OF THE DRAWINGS

[0012] Figure 1 It is a schematic diagram of the structure of the utility model;

[0013] Figure 2 It is a top view of the utility model;

[0014] Figure 3 for Figure 2 Middle AA section view;

[0015] Figure 4 for Figure 2 Middle BB section view;

[0016] Figure 5 for Figure 2 Middle CC section view;

[0017] In the figure: 1 conveying bin, 2 first main shaft, 3 second main shaft, 4 driving sprocket, 5 driven sprocket, 6 first anti-winding plate, 7 second anti-winding plate, 8 sleeve, 9 bearing seat, 10 limiting groove, 11 limiting boss, 12 ball bearing, 13 adjusting seat, 14 fixing seat, 15 adjusting bolt, 16 bending part. DETAILED DESCRIPTION

[0018] The utility model will be further described below in conjunction with the accompanying drawings and embodiments.

[0019] In order to make the purpose, technical solutions and advantages of the embodiments of the utility model clearer, the technical solutions in the embodiments of the utility model will be clearly and completely described below in conjunction with the drawings in the embodiments of the utility model. Obviously, the described embodiments are part of the embodiments of the utility model, not all of the embodiments. Therefore, the following detailed description of the embodiments of the utility model provided in the drawings is not intended to limit the scope of the utility model for which protection is sought, but merely represents the selected embodiments of the utility model. Based on the embodiments in the utility model, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the utility model.

[0020] It should be noted that similar numbers and letters represent similar items in the following drawings, so once an item is defined in one drawing, it does not need to be further defined and explained in the subsequent drawings. In the description of the present invention, it should be noted that the orientation or position relationship indicated by the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inside", "outside", etc. is based on the orientation or position relationship shown in the drawings, or the orientation or position relationship in which the invention product is usually placed when used, which is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation of the present invention. In addition, the terms "first", "second", "third", etc. are only used to distinguish the description, and cannot be understood as indicating or implying relative importance. In addition, the terms "horizontal", "vertical", etc. do not mean that the components are absolutely horizontal or suspended, but can be slightly tilted. For example, "horizontal" only means that its direction is more horizontal than "vertical", and does not mean that the structure must be completely horizontal, but can be slightly tilted. In the description of the present invention, it is also necessary to explain that, unless otherwise clearly specified and limited, the terms "set", "install", "connect", and "connect" should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection, or it can be indirectly connected through an intermediate medium, or it can be the internal communication of two elements. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0021] Example: See Figure 1-Figure 5 , an anti-entanglement structure of a small harvester conveying device, comprising an inclined conveying bin 1 with a U-shaped cross-section, a first main shaft 2 and a second main shaft 3 are respectively installed at both ends of the conveying bin 1, the first main shaft 2 is located at the upper end of the conveying bin 1, and the second main shaft 3 is located at the lower end of the conveying bin 1, and the first main shaft 2 is a driving shaft, one end of which is connected to the power part through a spline, and a driving sprocket 4 and a driven sprocket 5 for installing a chain rake are respectively provided on the first main shaft 2 and the second main shaft 3; a first anti-entanglement plate 6 and a second anti-entanglement plate 7 are provided between the first main shaft 2 and the second main shaft 3, the first anti-entanglement plate 6 and the second anti-entanglement plate 7 are connected to the bin wall of the conveying bin 1, and are parallel to the bottom surface of the conveying bin 1, and there is a spacing between the adjacent sides of the first anti-entanglement plate 6 and the second anti-entanglement plate 7 to form a leak hole, and the opposite sides are respectively matched with the first main shaft 2 and the second main shaft 3 in a clearance.

[0022] By providing two independent first anti-winding plates 6 and second anti-winding plates 7, a leak hole is formed between the first anti-winding plate 6 and the second anti-winding plate 7, so that the grains rolled up above can fall to the bottom in time and be transported by the chain rake. At the same time, the first anti-winding plate 6 and the second anti-winding plate 7 are respectively matched with the first main shaft 2 and the second main shaft 3 in a gap, so as to more effectively prevent the stems of the grains from passing through the gap and being entangled on the main shaft, thereby achieving a good anti-winding effect and improving the transportation efficiency of the conveying bin 1.

[0023] In order to further improve the anti-entanglement effect, in this embodiment, a sleeve 8 is sleeved on the outside of the first main shaft 2, and the end of the first anti-entanglement plate 6 facing away from the second anti-entanglement plate 7 is loosely matched with the sleeve 8, which is equivalent to increasing the diameter of the first main shaft 2, making it more difficult for the stems of grains to be entangled on the first main shaft 2.

[0024] Furthermore, since the first main shaft 2 is a rotating member, it is still easy to entangle the grains. Therefore, in this embodiment, the two ends of the first main shaft 2 are rotatably mounted on the opposite side walls of the conveying bin 1 through the bearing seat 9, the driving sprocket 4 is fixedly arranged in the middle of the first main shaft 2, and the end faces of the two ends of the driving sprocket 4 are provided with limiting grooves 10, and the two bearing seats 9 are provided with corresponding limiting bosses 11 on the side close to the driving sprocket 4, and the sleeve 8 is arranged between the driving sprocket 4 and the bearing seat 9, one end of the sleeve 8 is fixedly sleeved on the limiting boss 11, and the other end is inserted into the limiting groove 10 and is in clearance fit with the limiting groove 10. In this way, the sleeve 8 no longer rotates, and the first main shaft 2 rotates inside the sleeve 8, so that only the driving sprocket 4 rotates at the position of the first main shaft 2, and the driving sprocket 4 is easy to cut off the grains because it is engaged with the chain rake, so it is not easy to entangle, and at the same time, the clearance fit between the limiting groove 10 on the driving sprocket 4 and the end of the sleeve 8 is also easy to cut off the grains, thereby improving the anti-entanglement effect.

[0025] In addition, in the present embodiment, in order to improve the anti-winding effect of the second main shaft 3, the two ends of the second main shaft 3 are fixedly connected to the opposite side walls of the conveying bin 1, and a ball bearing 12 is sleeved in the middle, and the driven sprocket 5 is fixedly sleeved on the outer ring of the ball bearing 12. In this way, the second main shaft 3 does not need to rotate, and only the driven sprocket 5 rotates with the driving sprocket 4, which further reduces the probability of grains being entangled on the second main shaft 3.

[0026] In order to better adjust the tension of the chain rake, strip holes are opened along the length direction of the conveying bin 1 on the opposite side walls, and an adjustment device is installed on the outer side wall of the conveying bin 1 at the position corresponding to the strip hole. The two ends of the second main shaft 3 are respectively connected to an adjustment seat 13 after passing through the strip holes on the corresponding sides. The adjustment device is connected to the adjustment seat 13 and can drive the adjustment seat 13 to move, so that the adjustment seat 13 drives the second main shaft 3 to slide along the strip hole. The adjustment device includes a fixed seat 14 fixed on the side wall of the conveying bin 1, and an adjustment bolt 15 threadedly mounted on the fixed seat 14. One end of the adjustment bolt 15 is connected to the adjustment seat 13, and the adjustment bolt 15 can push the adjustment seat 13 to move when it rotates.

[0027] Since most of the grains are wound around the main shaft because the stems of the grains are tilted, and after contacting the main shaft, they are wound around the main shaft due to the rotation of the main shaft, therefore, the present application has solved the rotation problem of the main shaft through the above-mentioned structural improvement. In order to further improve the anti-winding effect, in this embodiment, the ends of the first anti-winding plate 6 and the second anti-winding plate 7 that are separated from each other are each provided with a bending portion 16 bent to one side, and the bending portion 16 is bent toward the direction of the chain rake running from the driven sprocket 5 to the driving sprocket 4, and the bending portion 16 is in clearance with the sleeve 8. In this way, the tilted stems of the grains are kept away from the gap between the anti-winding plate and the main shaft by the bending portion 16 under the shielding and guiding effect of the bending portion 16, further reducing the stems of the grains squeezed into the gap and improving the anti-winding effect.

[0028] In summary, the utility model has a simple structure, a better anti-winding effect, a higher conveying efficiency of the conveying bin, and is easy to promote and apply.

[0029] Finally, it should be noted that the above embodiments are only used to illustrate the technical solution of the utility model 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 utility model without departing from the purpose and scope of the technical solution of the utility model should be included in the scope of the claims of the utility model.

Claims

1. An anti-entanglement structure of a small harvester conveying device, comprising a conveying bin, with a first main shaft and a second main shaft parallel to each other respectively installed at both ends of the conveying bin, wherein: The axial directions of the first main shaft and the second main shaft are perpendicular to the length direction of the conveying bin, and a driving sprocket and a driven sprocket for installing a chain rake are respectively provided on the first main shaft and the second main shaft; the characteristic is that a first anti-entanglement plate and a second anti-entanglement plate are provided between the first main shaft and the second main shaft, the first anti-entanglement plate and the second anti-entanglement plate are connected to the bin wall of the conveying bin and are parallel to the bottom surface of the conveying bin, and a gap is formed between the adjacent sides of the first anti-entanglement plate and the second anti-entanglement plate, and the opposite sides are respectively matched with the first main shaft and the second main shaft in a clearance.

2. The anti-entanglement structure of a small harvester conveying device according to claim 1, characterized in that: A sleeve is sleeved on the outer side of the first main shaft, and a side of the first anti-wrapping plate facing away from the second anti-wrapping plate is in clearance fit with the sleeve.

3. The anti-entanglement structure of a small harvester conveying device according to claim 2, characterized in that: The two ends of the first main shaft are rotatably mounted on the opposite side walls of the conveying bin through bearing seats, the driving sprocket is fixedly arranged in the middle of the first main shaft, limiting grooves are arranged on the end faces of both ends of the driving sprocket, and corresponding limiting bosses are arranged on the side of the two bearing seats close to the driving sprocket, and the sleeve is arranged between the driving sprocket and the bearing seat, one end of the sleeve is fixedly sleeved on the limiting boss, and the other end is inserted into the limiting groove and matched with the limiting groove clearance.

4. The anti-entanglement structure of a small harvester conveying device according to claim 2, characterized in that: The two ends of the second main shaft are fixedly connected to the opposite side walls of the conveying bin, and a ball bearing is sleeved in the middle thereof, and the driven sprocket is fixedly sleeved on the outer ring of the ball bearing.

5. The anti-entanglement structure of a small harvester conveying device according to claim 4, characterized in that: Strip holes are opened along the length direction of the conveying bin on the opposite side walls, and an adjustment device is installed on the outer side wall of the conveying bin at the position corresponding to the strip holes. The two ends of the second main shaft pass through the strip holes on the corresponding sides and are connected to an adjustment seat. The adjustment device is connected to the adjustment seat and can drive the adjustment seat to move, so that the adjustment seat drives the second main shaft to slide along the strip hole.

6. The anti-entanglement structure of a small harvester conveying device according to claim 5, characterized in that: The adjusting device comprises a fixing seat fixed on the side wall of the conveying bin, and an adjusting bolt threadedly mounted on the fixing seat, one end of the adjusting bolt is connected to the adjusting seat, and the adjusting bolt can push the adjusting seat to move when it rotates.

7. The anti-entanglement structure of a small harvester conveying device according to any one of claims 2 to 6, characterized in that: The first anti-wrapping plate and the second anti-wrapping plate are both provided with a bent portion bent to one side at the opposite ends, the bent portion is bent toward the direction of the chain rake running from the driven sprocket to the driving sprocket, and the bent portion is in clearance with the sleeve.

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