A leveling device for a tiller

Abstract

This utility model relates to the field of agricultural tillage machinery technology, and in particular to a leveling device for a tillage machine. It includes a support mechanism, a leveling mechanism, and a sieving mechanism. The leveling mechanism is located below the support mechanism, and the sieving mechanism is located between the support mechanism and the leveling mechanism. A sieve plate, which can be rotated up and down and is located on the front side of the leveling tube, is used to sieve out weeds, stalks, and hard objects in the paddy field. These sieved materials are accumulated on the upper side of the sieve plate, thereby reducing the accumulation of weeds, stalks, or hard objects on the front side of the leveling tube and preventing them from affecting the leveling effect. Simultaneously, the vibration generated by the rotating flexible shaft and multiple eccentric pendulums accelerates the flow speed of the mud on the front side of the leveling tube, allowing the mud to quickly fill the ditch areas in the paddy field.

Description

Technical Field

[0001] This utility model relates to the field of agricultural tillage machinery technology, and in particular to a leveling device for a tillage machine. Background Technology

[0002] According to the patent document with announcement number CN223040537U, the height of the leveling pipe is adjusted by raising and lowering the lifting frame through the first linear driver. Then, the leveling pipe is connected to the lifting frame by a flexible connector to prevent collision with hard objects. When leveling soft paddy fields, the limiting plate is pressed on the leveling pipe by the second linear driver to level the paddy field.

[0003] The patent document describes a process where a leveling pipe is used to level a paddy field. If hard objects (such as stones or tree branches) are present in the field, the pipe may scrape against their tops during movement, potentially causing damage and unevenness in the affected area. These objects could also injure transplanters or damage machinery during subsequent planting. For lighter objects, the pipe may carry them along with the paddy field, accumulating mud and plant stalks on its front. This accumulation could create furrows of varying depths, increasing vehicle resistance and hindering the leveling process. Utility Model Content

[0004] The purpose of this invention is to provide a leveling device for a tiller in order to solve the above-mentioned problems.

[0005] This utility model achieves the above objectives through the following technical solutions:

[0006] A leveling device for a tiller includes a support mechanism, a leveling mechanism and a shovel mechanism, wherein the leveling mechanism is located below the support mechanism and the shovel mechanism is located between the support mechanism and the leveling mechanism.

[0007] The leveling mechanism includes a leveling tube, inside which are two rigid shafts. A flexible shaft is fixed to the ends of the two rigid shafts that are far apart from each other, and a driven gear is fixed to the ends of the two rigid shafts that are close to each other. Multiple asymmetrical eccentric pendulums are fixed to the outside of each flexible shaft. A positioning seat is fixed to the ends of the two flexible shafts that are far apart from each other. A universal joint is provided on the front side of the middle position of the leveling tube. A driving gear meshes between the two driven gears.

[0008] The sieve shovel mechanism includes a sieve plate, with a horizontal shaft fixed at the upper end of the sieve plate. Two lifting frames are fixed at the top of the sieve plate and are symmetrically arranged about the universal axis. Each sieve plate is rotatably connected to a lifting hydraulic rod at its upper end.

[0009] Preferably, both ends of the leveling tube are fixed with concentric support rods, and two positioning seats are rotatably connected to both ends inside the leveling tube.

[0010] Preferably, a traction shaft for driving the drive gear is provided in the middle of the towing tube, and one end of the traction shaft extending out of the towing tube is fixedly connected to the universal joint.

[0011] Preferably, a support is provided in the middle position inside the flat tube, and both rigid shafts are rotatably connected to the support.

[0012] Preferably, the support mechanism includes a connecting seat, a through support shaft fixed at the front end of the connecting seat, a fixed frame rotatably connected to the front side of the support shaft, support arms fixed on both sides of the rear end of the connecting seat, a lifting shaft fixed at the middle position of the rear end of the connecting seat, two lifting hydraulic rods rotatably connected to the lifting shaft, and the fixed parts of the two lifting hydraulic rods are rotatably connected to the lower side of the fixed frame.

[0013] Preferably, the lower ends of the two support arms are rotatably connected to the two support rods of the drag tube, and the two ends of the horizontal shaft are rotatably connected between the two support arms.

[0014] Preferably, the fixing parts of the two lifting hydraulic rods are rotatably connected to both ends of the support shaft extending from the connecting seat.

[0015] The advantages compared to existing technologies are as follows:

[0016] A sieve plate that can be flipped up and down is used to screen out weeds, stalks, and hard objects in the paddy field. These screened materials are then piled up on the upper side of the sieve plate, which reduces the accumulation of weeds, stalks, or hard objects in front of the paddy field and avoids affecting the leveling effect of the paddy field. At the same time, the vibration generated by the rotating flexible shaft and multiple eccentric pendulums is used to accelerate the flow speed of the mud in front of the paddy field, and then the mud quickly fills the ditch areas in the paddy field. Attached Figure Description

[0017] To more clearly illustrate the technical solutions in the embodiments of this utility model or the prior art, the drawings used in the description of the embodiments or the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of this utility model. For those skilled in the art, other drawings can be obtained based on these drawings without creative effort.

[0018] Figure 1 This is a perspective view of a leveling device for a tiller as described in this utility model;

[0019] Figure 2 This is a front view of the leveling device of a tiller described in this utility model;

[0020] Figure 3 yes Figure 2 Sectional view at CC;

[0021] Figure 4 This is a schematic diagram of the shovel mechanism of the leveling device of a tiller according to the present invention;

[0022] Figure 5 This is a schematic diagram of the support mechanism of the leveling device of a tiller according to the present invention;

[0023] Figure 6 This is a schematic diagram of the drag tube structure of the drag leveler of a tiller according to the present invention;

[0024] Figure 7 This is a schematic diagram of the flexible shaft structure of the leveling device of a tiller according to the present invention;

[0025] Figure 8 This is a schematic diagram of the fixing frame structure of the leveling device of a tiller described in this utility model.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Support mechanism; 2. Leveling mechanism; 3. Screen shovel mechanism; 11. Fixing frame; 12. Connecting seat; 13. Support arm; 14. Support shaft; 15. Lifting shaft; 16. Lifting hydraulic rod; 21. Leveling pipe; 22. Flexible shaft; 23. Rigid shaft; 24. Driven gear; 25. Drive gear; 26. Universal joint; 27. Positioning seat; 31. Lifting hydraulic rod; 32. Lifting frame; 33. Horizontal shaft; 34. Screen plate. Detailed Implementation

[0028] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installation," "connection," and "joining" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection or an electrical connection; they can refer to a direct connection or an indirect connection through an intermediate medium; and they can refer to the internal connection of two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0029] The present invention will be further described below with reference to the accompanying drawings:

[0030] like Figures 1-8 As shown, a leveling device for a tiller includes a support mechanism 1, a leveling mechanism 2, and a shovel mechanism 3. The leveling mechanism 2 is located below the support mechanism 1, and the shovel mechanism 3 is located between the support mechanism 1 and the leveling mechanism 2.

[0031] Preferably, the support mechanism 1 includes a connecting seat 12, with a through support shaft 14 fixed to the front end of the connecting seat 12. A fixed frame 11 is rotatably connected to the front side of the support shaft 14. Support arms 13 are fixed to both sides of the rear end of the connecting seat 12. A lifting shaft 15 is fixed to the middle position of the rear end of the connecting seat 12. Two lifting hydraulic rods 16 are rotatably connected to the lifting shaft 15. The fixed parts of the two lifting hydraulic rods 16 are rotatably connected to the lower side of the fixed frame 11. The fixed frame 11 is used to connect to the tractor being pulled. The upper end of the connecting seat 12 is then rotatably supported by the fixed frame 11. Subsequently, the telescopic arm movement of the two lifting hydraulic rods 16 is used to make the lower ends of the two support arms 13 rotate up and down around the support shaft 14, thereby adjusting the depth of the leveling mechanism 2 pressed into the paddy field.

[0032] In this embodiment: the leveling mechanism 2 includes a leveling tube 21, inside which are two rigid shafts 23. A flexible shaft 22 is fixed to the ends of the two rigid shafts 23 that are far apart from each other, and a driven gear 24 is fixed to the ends of the two rigid shafts 23 that are close to each other. Multiple asymmetrical eccentric pendulums are fixed to the outside of each flexible shaft 22. A positioning seat 27 is fixed to the ends of the two flexible shafts 22 that are far apart from each other. A universal joint 26 is provided on the front side of the middle position of the leveling tube 21. A driving gear 25 meshes between the two driven gears 24. Concentric support rods are fixed to both ends of the leveling tube 21. Two positioning seats 27 are rotatably connected to both ends inside the leveling tube 21. A traction shaft for driving the driving gear 25 is provided in the middle position of the leveling tube 21, and the end of the traction shaft extending out of the leveling tube 21 is fixedly connected to the universal joint 26. A support is provided in the middle of the interior of the leveling pipe 21, and two rigid shafts 23 are rotatably connected to the support. The universal joint 26 is connected to the drive shaft of the tractor. The rotation of the universal joint 26 drives the traction shaft to rotate, and the traction shaft drives the drive gear 25 to rotate synchronously. At this time, the two driven gears 24 meshing with the drive gear 25 also rotate synchronously, which causes the two rigid shafts 23 to rotate on the support. At this time, the rigid shafts 23 drive the flexible shaft 22 and multiple eccentric pendulums on its outer side to rotate inside the leveling pipe 21. The rotating multiple eccentric pendulums strike the inner wall of the leveling pipe 21 to generate vibration, so that the vibration generated by the leveling pipe 21 during the movement accelerates the flow of mud on the front side of the leveling pipe 21. The flowing mud fills the ditch area and improves the leveling speed of the paddy field.

[0033] In this embodiment: the sieve shovel mechanism 3 includes a sieve plate 34, a horizontal shaft 33 fixed to the upper end of the sieve plate 34, and two lifting frames 32 fixed to the top of the sieve plate 34. The two lifting frames 32 are symmetrically arranged about the universal joint 26. A lifting hydraulic rod 31 is rotatably connected to the upper end of each sieve plate 34. The lower ends of the two support arms 13 are rotatably connected to the two support rods of the dragging pipe 21. The two ends of the horizontal shaft 33 are rotatably connected between the two support arms 13. The fixed parts of the two lifting hydraulic rods 31 are rotatably connected to the support shaft 14 extending out of the connecting seat 12. At both ends, the lifting frame 32 is moved up and down by the telescopic part of the lifting hydraulic rod 31, so that the front end of the screen plate 34 can be rotated up and down around the horizontal axis 33. This adjusts the extension of the front end of the screen plate 34 into the paddy field mud. During the movement, the screen plate 34 scoops up weeds and hard objects in the mud and piles them up on the upper side of the screen plate 34. Then, the telescopic part of the lifting hydraulic rod 31 is shortened to make the front end of the screen plate 34 flip up, so that the weeds and hard objects piled on the screen plate 34 are poured out to the same position.

[0034] Working principle: When in use, first connect the front end of the fixing frame 11 to the rear end of the tractor, then connect the universal joint 26 to the drive shaft of the tractor, and then move the entire device to the corresponding paddy field by moving the tractor.

[0035] Then, the telescopic parts of the two lifting hydraulic rods 16 shorten to drive the lifting shaft 15 to rotate downward. At the same time, the lifting shaft 15 will drive the lower end of the connecting seat 12 to rotate downward synchronously with the support shaft 14 as the center. At this time, the support arms 13 on both sides of the connecting seat 12 will drive the leveling pipe 21 to press on the mud of the paddy field. Then, the depth of the leveling pipe 21 pressed into the mud of the paddy field can be adjusted by adjusting the length of the telescopic parts of the lifting hydraulic rods 16. At the same time, the telescopic parts of the two lifting hydraulic rods 31 extend and drive the lifting frame 32 to move downward. At this time, the two lifting frames 32 will drive the front end of the screen plate 34 to rotate downward with the horizontal axis 33 as the center, so that the front end of the screen plate 34 is inserted into the mud of the paddy field. Then, during the movement of the entire device, the screen plate 34 will scoop up the weeds and hard objects in the mud of the paddy field and pile them up on the upper side of the screen plate 34 to avoid the collision between the leveling pipe 21 and hard objects during the movement. It can also prevent the weeds from blocking the front of the leveling pipe 21 and causing a large amount of mud to accumulate.

[0036] When the tractor moves the entire device, the universal joint 26 is rotated by the tractor's drive shaft. Then, the universal joint 26 drives the drive gear 25 to rotate through the traction shaft. Subsequently, the drive gear 25 drives two driven gears 24 to rotate two rigid shafts 23 on the support. Then, the two rigid shafts 23 drive their respective flexible shafts 22 and multiple eccentric pendulums on their outer sides to rotate inside the leveling pipe 21. The rotating multiple eccentric pendulums strike the inner wall of the leveling pipe 21 to generate vibration, thereby leveling the top of the mud in the paddy field during the movement of the leveling pipe 21. At the same time, when the leveling pipe 21 moves, the vibration generated by the eccentric pendulums driven by the flexible shaft 22 accelerates the flow of mud on the front side of the leveling pipe 21. The flowing mud fills the ditch area and increases the leveling speed of the paddy field.

[0037] When the weeds and hard objects on the screen plate 34 accumulate to a certain weight, the lifting frames 32 are flipped upward by the telescopic parts of the two lifting hydraulic rods 31. At this time, the front end of the screen plate 34 will flip upward around the horizontal axis 33, thereby dumping the weeds and hard objects accumulated on the screen plate 34 onto the rear side of the leveling pipe 21. Then, it is convenient to clean up the piled-up weeds and hard objects. In addition, after the entire leveling is completed, the extension of the telescopic parts of the two lifting hydraulic rods 16 causes the connecting seat 12 to drive the two support arms 13, the leveling mechanism 2, and the screen shovel mechanism 3 to flip upward around the support shaft 14, thereby lifting the entire device off the paddy field ground, and then the next paddy field can be leveled.

[0038] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely illustrative of the principles of this utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model.

Claims

1. A land leveler for a cultivator comprising a support mechanism (1), characterized in that: It also includes a leveling mechanism (2) and a sieve shovel mechanism (3), wherein the leveling mechanism (2) is located below the support mechanism (1), and the sieve shovel mechanism (3) is located between the support mechanism (1) and the leveling mechanism (2); The leveling mechanism (2) includes a leveling tube (21), inside which are two rigid shafts (23). A flexible shaft (22) is fixed at the ends of the two rigid shafts (23) that are far apart from each other, and a driven gear (24) is fixed at the ends of the two rigid shafts (23) that are close to each other. Multiple asymmetrical eccentric pendulums are fixed on the outside of each flexible shaft (22). A positioning seat (27) is fixed at the ends of the two flexible shafts (22) that are far apart from each other. A universal joint (26) is provided on the front side of the middle position of the leveling tube (21). A drive gear (25) meshes between the two driven gears (24). The sieve shovel mechanism (3) includes a sieve plate (34), a horizontal shaft (33) is fixed at the upper end of the sieve plate (34), two lifting frames (32) are fixed at the top of the sieve plate (34), and the two lifting frames (32) are symmetrically arranged about the universal shaft (26). Each sieve plate (34) is rotatably connected to a lifting hydraulic rod (31) at its upper end.

2. A land leveler for a cultivator as claimed in claim 1 wherein: Both ends of the flat tube (21) are fixed with concentric support rods, and the two positioning seats (27) are rotatably connected to both ends inside the flat tube (21).

3. The land leveler for a cultivator as set forth in claim 1, wherein: The middle position of the towing tube (21) is provided with a traction shaft for driving the drive gear (25) to rotate, and one end of the traction shaft extending out of the towing tube (21) is fixedly connected to the universal joint (26).

4. The leveling device for a tiller according to claim 1, characterized in that: The middle position inside the flat tube (21) is provided with a support, and both of the rigid shafts (23) are rotatably connected to the support.

5. The leveling device for a tiller according to claim 2, characterized in that: The support mechanism (1) includes a connecting seat (12), a through support shaft (14) is fixed at the front end of the connecting seat (12), a fixed frame (11) is rotatably connected to the front side of the support shaft (14), support arms (13) are fixed on both sides of the rear end of the connecting seat (12), a lifting shaft (15) is fixed at the middle position of the rear end of the connecting seat (12), and two lifting hydraulic rods (16) are rotatably connected to the lifting shaft (15), and the fixed parts of the two lifting hydraulic rods (16) are rotatably connected to the lower side of the fixed frame (11).

6. The leveling device for a tiller according to claim 5, characterized in that: The lower ends of the two support arms (13) are rotatably connected to the two support rods of the flat tube (21), and the two ends of the horizontal shaft (33) are rotatably connected between the two support arms (13).

7. The leveling device for a tiller according to claim 6, characterized in that: The fixed parts of the two lifting hydraulic rods (31) are rotatably connected to the two ends of the support shaft (14) extending out of the connecting seat (12).

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