Combined plowing and tilling all-in-one machine suitable for paddy field

Abstract

The invention relates to the technical field of farming equipment, and discloses a combined plowing and tilling all-in-one machine suitable for paddy fields, which comprises a traction frame, the traction frame is connected with a main shaft, the main shaft is transversely inclined by 15-45 degrees, the main shaft is in transmission connection with a plurality of groups of discs, and the traction frame is provided with a plurality of groups of scrapers corresponding to the discs. A lower gear set with the same height as the main shafts is arranged in the middle of the traction frame, the main shaft on one side is in transmission connection with the lower gear set, the lower gear set is in transmission connection with a middle disc, and the middle disc longitudinally inclines by 15-45 degrees. According to the combined ploughing and plowing all-in-one machine suitable for the paddy field, the traction frame is in a dovetail shape, the discs on the traction frame are symmetrically arranged, transverse counter-acting force borne by the discs on the two sides counteracts mutually, slipping and deviation of a tractor are avoided, and the plowing depth and uniformity are guaranteed; and scraping is carried out by the main shaft.

Description

Technical Field

[0001] The present application relates to the technical field of agricultural equipment, and in particular to a combined plowing and tilling machine suitable for paddy fields. Background Art

[0002] Disc plow is the core equipment for plowing land. It is connected to the tractor through a three-point suspension. When operating, the plow blade rotates to plow the soil.

[0003] When disc plows are used in paddy fields, there are the following shortcomings. First, due to the strong viscosity of paddy field soil, it is easy to adhere to the surface of the disc during tillage, which reduces the cutting efficiency and requires frequent shutdowns for cleaning. When the soil is too wet, secondly, the rolling resistance of the disc increases, and the disc plow often tilts to one side, which may cause the tractor to slip and deviate, affecting the tillage depth and uniformity.

[0004] When the current disc plow is driven by a tractor, the power transmission path has the problem of multiple rotation direction conversion. The traditional universal shaft transmission solution faces two main technical bottlenecks under large-angle working conditions: first, the increase in the transmission angle causes the lateral load to increase exponentially; second, fatigue cracks are easily generated in the cross shaft under the action of alternating stress, which makes the disc plow have a high failure rate.

[0005] Traditional disc plows usually have a set of discs that are not on the main shaft and have different inclination angles. They are used to balance the lateral force and enhance the deep tillage effect. However, since they are far away from the main shaft, the transmission structure is relatively complex and the failure rate is high. Summary of the invention

[0006] The present application proposes a combined plowing and tilling machine suitable for paddy fields, on which the discs are symmetrically arranged, and the lateral reaction forces exerted on the discs on both sides offset each other, thereby preventing the tractor from slipping and deviation, and ensuring the tillage depth and uniformity. At the same time, each disc can be moved independently, and when encountering stones or local soil being too hard, the corresponding disc can move upward to unload the force, thereby reducing the probability of damage.

[0007] To achieve the above-mentioned purpose, the present application adopts the following technical scheme: a combined plowing machine suitable for paddy fields, including a traction frame, a main gear set is provided in the middle of the traction frame, the main gear set is transmission-connected to the input shaft, the main gear set is transmission-connected to the universal shaft, the universal shaft is transmission-connected to the main shaft through the side gear set at the end, the main shaft is laterally inclined by 15-45 degrees, the main shaft is transmission-connected to multiple groups of discs, the traction frame is provided with multiple groups of scrapers corresponding to the discs, a lower gear set with the same height as the main shaft is provided in the middle of the traction frame, the main shaft on one side is transmission-connected to the lower gear set, the lower gear set is transmission-connected to the intermediate disk, and the intermediate disk is longitudinally inclined by 15-45 degrees.

[0008] Furthermore, the lateral inclination angle of the main shaft is 28 degrees, and the lateral inclination angle of the intermediate disk is 28 degrees.

[0009] Furthermore, the traction frame is provided with a connecting shaft parallel to the main shaft, the connecting shaft includes a fixed shaft and a limit rod, the fixed shaft is connected to the disc through a connecting arm, the connecting arm is hinged to the fixed shaft, the fixed shaft and the connecting arm are provided with a pre-tightening elastic member, so that the connecting arm is pressed downwardly against the limit rod, the connecting arm is fixedly connected with a connecting bearing, the outer ring of the connecting bearing is fixedly connected to the connecting arm, the inner ring of the connecting bearing is fixedly connected to the disc, the connecting bearing and the disc are provided with an opening in the middle, the diameter of the opening is larger than the diameter of the main shaft, the main shaft passes through the openings of each connecting bearing and the disc and flexibly transmits with the inner ring of each connecting bearing, the connecting bearing and the disc can move radially relative to the main shaft, each disc can move individually, when encountering stones or local soil is too hard, the corresponding disc can move up to unload the force to avoid excessive concentration of force and damage to the disc.

[0010] Furthermore, a detection rope is provided above the connecting arm, and when the connecting arm contacts the detection rope, the lifting structure is triggered to lift the traction frame, and when the hard stone cannot be crossed, the disc is lifted.

[0011] Furthermore, when the connecting arm is pressed against the limiting rod, the main shaft is eccentric relative to the opening, the main shaft is biased toward the top, and the inner wall of the connecting bearing and the corresponding position of the main shaft are provided with transmission teeth, which are engaged with each other, and the eccentricity increases the radial movement of the disc.

[0012] Furthermore, the main shaft is connected to the connecting bearing through a transmission member, and the transmission member includes a traction belt, one end of the traction belt is connected to the connecting bearing, and the other end of the traction belt is connected to the main shaft through a connecting plate, and radial movement can be achieved during transmission.

[0013] Furthermore, mounting rods are provided at both ends of the traction belt, threads are provided on the mounting rods, and corresponding mounting holes are provided on the connecting bearing and the connecting plate.

[0014] Furthermore, the traction belt is elastic.

[0015] Furthermore, the connecting plate passes through the main shaft and can float relative to the main shaft, traction belts are provided at both ends of the connecting plate, and the length of the connecting plate is greater than or equal to the diameter of the main shaft.

[0016] Furthermore, when the connecting arm is pressed against the limiting rod, a gap is left between the main shaft and the connecting bearing.

[0017] The beneficial effects of the present invention are as follows:

[0018] A combined plowing and tilling machine suitable for paddy fields provided by the present application has a dovetail-shaped towing frame, on which the discs are symmetrically arranged. The lateral reaction forces received by the two discs cancel each other out, preventing the tractor from slipping and deviating, ensuring the tillage depth and uniformity. At the same time, a scraper is provided on the towing frame. When too much adhesion or weeds accumulate on the main shaft and discs, they will be scraped off by the main shaft.

[0019] When the transmission direction changes, it is transitioned through a corner gear set, reducing the pressure on the universal shaft and lowering the failure rate.

[0020] Secondly, on the one hand, it is connected to the disc through a connecting arm, and each disc can move independently. When encountering stones or overly hard local soil, the corresponding disc can move upward to relieve the force, avoiding overly concentrated force and damaging the disc. On the other hand, the main shaft is only used for transmission, and the reaction force received by the disc is borne by the connecting arm, with the force dispersed, which can reduce the probability of damage to the main shaft.

[0021] In addition, a single disc can move relatively. When the soil hardness is uneven, it will only affect the tillage depth of a local area, while the normal tillage depth can be ensured at other positions. BRIEF DESCRIPTION OF THE DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the present invention or the prior art, the following will briefly introduce the drawings required for use in the description of the embodiments or the prior art. Obviously, the drawings in the following description are only the embodiments of the present invention. For those of ordinary skill in the art, without creative efforts, other drawings can also be obtained based on the provided drawings:

[0023] Figure 1 It is a schematic diagram of Embodiment 1 of the present invention;

[0024] Figure 2 It is a partial view of Embodiment 1 of the present invention;

[0025] Figure 3 It is a schematic diagram of the lower gear set in Embodiment 1 of the present invention;

[0026] Figure 4 It is a schematic diagram of the main gear set in Embodiment 1 of the present invention;

[0027] Figure 5 It is a schematic diagram of the side gear set in Embodiment 1 of the present invention;

[0028] Figure 6 It is a schematic diagram of the connection between the main shaft and the disc in Embodiment 1 of the present invention;

[0029] Figure 7 It is a schematic diagram of Embodiment 2 of the present invention;

[0030] Figure 8It is the top view of the second embodiment of the present invention;

[0031] Figure 9 It is the connection schematic diagram of the disc in the second embodiment of the present invention;

[0032] Figure 10 It is the connection schematic diagram of the disc in the third and fourth embodiments of the present invention;

[0033] Figure 11 It is the side view of the disc in the second, third, and fourth embodiments of the present invention.

[0034] In the figure: 1. Tractor frame; 2. Main gear set; 21. Input gear; 22. First bevel gear; 23. First corner bevel gear set; 24. Output gear; 3. Input shaft; 4. Cardan shaft; 5. Side gear set; 6. Main shaft; 61. Mounting ring; 62. Clamping ring; 63. Reinforcing ring; 7. Disc; 8. Connecting shaft; 81. Fixed shaft; 82. Limiting rod; 83. Detection cable; 9. Connecting arm; 10. Intermediate disc; 11. Lower gear set; 111. Second corner bevel gear set; 112. First flat gear; 113. Second flat gear; 114. Third corner bevel gear set; 12. Transmission member; 121. Connecting plate; 122. Traction belt; 123. Mounting rod; 13. Connecting bearing; 14. Scraper; 15. Cultivator. Detailed implementation manners

[0035] Next, the technical solutions in the embodiments of the present invention will be clearly and completely described in conjunction with the accompanying drawings in the embodiments of the present invention. Obviously, the described embodiments are only a part of the embodiments of the present invention, rather than all the embodiments. All other embodiments obtained by those of ordinary skill in the art based on the embodiments of the present invention without creative efforts shall fall within the protection scope of the present invention.

[0036] Embodiment 1, please refer to Figures 1-6 , a combined plowing and tilling machine suitable for paddy fields, including a dovetail-shaped tractor frame 1, both sides of which have mounting arms, the two mounting arms are symmetric, the transverse inclination angle of the two mounting arms is 15 degrees - 45 degrees, preferably 28 degrees, the transverse direction refers to the direction perpendicular to the forward direction, the middle of the tractor frame 1 is provided with a main gear set 2, the main gear set 2 includes an input gear 21 coaxial with the input shaft 3, the input shaft 3 is connected to a tractor, the input gear 21 is drivingly connected to a first bevel gear 22, the input gear 21 and the first bevel gear 22 are perpendicular, and the rotating shaft is adjusted from longitudinal to transverse. Both ends of the rotating shaft of the first bevel gear 22 are connected to a cardan shaft 4 through a first corner bevel gear set 23. For the convenience of display, in Figure 2Among them, the upper universal joint shaft 4 removes the outer housing, while the lower universal joint shaft 4 is blocked by the housing. The first corner bevel gear set (23) includes two corner bevel gears, one of which is fixedly connected to the universal joint shaft (4), and the other is fixedly connected to the rotating shaft of the first bevel gear (22). The universal joint shaft 4 is laterally inclined by 15 - 45 degrees. The first bevel gear 22 is drivingly connected to an output gear 24, and the output gear 24 is drivingly connected to a tiller 15. The output gear 24 adjusts the rotating shaft from horizontal to vertical and outputs power to the rear tiller 15. The universal joint shaft 4 is drivingly connected to a main shaft 6 through a side gear set 5. The side gear set 5 is located at the end of the traction frame 1, and the main shaft 6 is directly below the universal joint shaft 4. There are multiple sets of gears in the side gear set 5 to adjust the rotation direction so that the rotation direction of the main shaft 6 meets the tilling requirements. The main shaft 6 is drivingly connected to multiple sets of discs 7. The discs 7 cut into the soil layer and rotate to achieve soil turning and covering. There are multiple sets of scrapers 14 on the traction frame 1. The scrapers 14 correspond to the discs 7, so that each side of each disc 7 corresponds to a set of scrapers 14. The scrapers 14 clean the clay adhered to the main shaft 6 and the discs 7, as well as the entangled straws, weeds, etc. The scrapers 14 are installed on the scraper frame, and their positions can be adjusted.

[0037] The intermediate disc 10 balances the lateral force and turns the soil to both sides. However, it is far from the main gear set 2 and has a large included angle. To achieve transmission, a lower gear set 11 is provided in the middle of the traction frame 1. The lower gear set 11 is located directly below the main gear set 2 and is flush with the main shaft 6. The lower gear set 11 includes a first flat gear 112. One side of the main shaft 6 is drivingly connected to the first flat gear 112 through a second corner bevel gear set 111. The first flat gear 112 is drivingly connected to a second flat gear 113. The first flat gear 112 and the second flat gear 113 are transitioned by a gear set. The second flat gear 113 is drivingly connected to the intermediate disc 10 through a third corner bevel gear set 114. The intermediate disc 10 is laterally inclined by 15 - 45 degrees, that is, the inclination angle of the intermediate disc 10 is complementary to the inclination angle of the main shaft 6. Both the second corner bevel gear set 111 and the third corner bevel gear set 114 are composed of two corner bevel gears. Transmitting power from the main shaft 6 to the lower gear set 11 can simplify the transmission structure and reduce the failure rate.

[0038] Please refer to Figure 7 , the main shaft 6 is fixedly connected to the disc 7. Multiple mounting rings 61 are welded on the main shaft 6. The number of mounting rings 61 is flexibly adjusted according to needs, generally 3 - 8 on each side. The disc 7 is installed on the mounting rings 61. The concave surface of the disc 7 faces the mounting rings 61. The convex surface of the disc 7 is provided with a clamping ring 62 and a reinforcing ring 63. The clamping ring 62 and the reinforcing ring 63 are fixed to the mounting rings 61 by bolts to clamp and fix the disc 7. For the convenience of replacement and maintenance, both the clamping ring 62 and the reinforcing ring 63 are composed of two split parts.

[0039] In the first embodiment, each disc plow blade of the disc plow is mounted on the same rotating shaft. On the one hand, during tillage, it is possible that a certain disc plow blade encounters a relatively hard stone or hard soil layer. Since the rotating shaft is rigid, at this time, the acting force of the disc plow may be concentrated on this disc plow blade, resulting in damage to this disc plow blade and affecting tillage. On the other hand, the reaction forces received by each disc are all concentrated on the rotating shaft, and the rotating shaft is also relatively easy to be damaged.

[0040] The second embodiment is based on the first embodiment. Please refer to Figure 8 and Figure 11 , the towing frame 1 is provided with a connecting shaft 8 parallel to the main shaft 6. The connecting shaft 8 includes a fixed shaft 81 and a limiting rod 82. The fixed shaft 81 is connected to the disc 7 through a connecting arm 9. The connecting arm 9 is hinged to the fixed shaft 81. The fixed shaft 81 and the connecting arm 9 are provided with a pre-compressed elastic member to make the connecting arm 9 closely adhere to the limiting rod 82. During normal tillage, the reaction force received by the disc 7 cannot overcome the elastic force of the elastic member. When the disc 7 encounters a stone or a relatively hard object, the acting force is concentrated on the disc 7. The reaction force received by the disc 7 can overcome the elastic force of the elastic member, causing the connecting arm 9 to rotate, and the disc 7 effectively unloads the force. The connecting arm 9 is fixedly connected with a connecting bearing 13. The outer ring of the connecting bearing 13 is fixedly connected with the connecting arm 9, and the inner ring of the connecting bearing 13 is fixedly connected with the disc 7. The inner ring of the connecting bearing 13 is fixedly connected with a flange, and the disc 7 is installed on the flange through fastening screws. An opening is provided in the middle of the connecting bearing 13 and the disc 7. The diameter of the opening is larger than the diameter of the main shaft 6. The main shaft 6 passes through the openings of each connecting bearing 13 and the disc 7 and is in transmission connection with the inner rings of each connecting bearing 13. The main shaft 6 simultaneously drives the inner rings of each connecting bearing 13 to rotate, thereby driving the disc 7 to rotate. When the reaction force received by the disc 7 is too large, the connecting bearing 13 and the disc 7 can also move relative to the main shaft 6 to unload the force.

[0041] When the connecting arm 9 closely adheres to the limiting rod 82, the main shaft 6 is eccentric with respect to the opening, and the main shaft 6 is biased towards the top. Transmission teeth are provided at the corresponding positions on the inner wall of the connecting bearing 13 and the main shaft 6, and the two are engaged with each other. The rotation of the main shaft 6 drives the connecting bearing 13 and the disc 7 to rotate. When the connecting arm 9 rotates, the connecting bearing 13 is disengaged from contact with the main shaft 6, and the connecting arm 9 has a large moving space.

[0042] A detection cable 83 is provided above the connecting arm 9. When the connecting arm 9 contacts the detection cable 83, the lifting structure is triggered to lift the towing frame 1. At the same time, the cockpit also issues a corresponding alarm. For relatively small stones, the disc 7 can unload the force and cross over. For relatively large hard objects, even when the connecting arm 9 rotates to the maximum angle, it still cannot cross over. In this case, the towing frame 1 is lifted to unload the force. A pressure sensor is provided on the detection cable 83 to judge whether the detection cable 83 contacts the connecting arm 9 by detecting the change in the tension on the detection cable 83.

[0043] Embodiment 3. In Embodiment 2, at some positions where the soil hardness is uneven, it may cause the disc 7 to jump frequently, which in turn leads to the slipping of the transmission teeth. For this reason, the transmission member 12 is used to replace the transmission method of Embodiment 2. The transmission member 12 includes a traction belt 122. One end of the traction belt 122 is connected to the connecting bearing 13, and the other end of the traction belt 122 is connected to the main shaft 6. The traction belt 122 has elasticity. The main shaft 6 can drive the connecting bearing 13 to rotate through the traction belt 122. At the same time, when the acting force is too large, the connecting bearing 13 and the disc 7 can also move relative to the main shaft 6.

[0044] Embodiment 4. On the basis of Embodiment 3, in order to increase the moving amount of the connecting bearing 13 relative to the disc 7, the traction belt 122 is connected to the main shaft 6 through a connecting plate 121. The connecting plate 121 floats relative to the main shaft 6. A through groove corresponding to the connecting plate 121 is provided on the main shaft 6. Traction belts 122 are provided at both ends of the connecting plate 121. The length of the connecting plate 121 is the same as or slightly larger than the diameter of the main shaft 6. Since the connecting plate 121 can float, the traction belt 122 may not have elasticity. When the connecting bearing 13 moves relative to the main shaft 6, the traction belt 122 moves towards the tightened side, so that there is a moving space on both sides.

[0045] Installation rods 123 are provided at both ends of the traction belt 122. Threads are provided on the installation rods 123. Corresponding installation holes are provided on the connecting bearing 13 and the connecting plate 121. The installation rods 123 are screwed into the installation holes to complete the installation of the transmission member 12. When the connecting arm 9 is pressed against the limiting rod 82, there is a gap between the main shaft 6 and the connecting bearing 13 to prevent the main shaft 6 from squeezing the traction belt 122.

[0046] The above description of the disclosed embodiments enables those skilled in the art to implement or use the present invention. Various modifications to these embodiments will be obvious to those skilled in the art. The general principles defined herein can be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention will not be limited to these embodiments shown herein, but will be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combined plowing and tilling machine applicable to paddy fields, comprising a towing frame (1), a main gear set (2) is provided in the middle of the towing frame (1), the main gear set (2) is drivingly connected to an input shaft (3), and it is characterized in that, On both sides of the main gear set (2), cardan shafts (4) are symmetrically arranged. The cardan shafts (4) are in driving connection with the main gear set (2). The cardan shafts (4) are in driving connection with a main shaft (6) through side gear sets (5) at the ends. The main shaft (6) is laterally inclined at 15 - 45 degrees. The main shaft (6) is in driving connection with multiple groups of discs (7). On the towing frame (1), multiple groups of scrapers (14) corresponding to the discs (7) are provided. In the middle of the towing frame (1), a lower gear set (11) with the same height as the main shaft (6) is provided. One side of the main shaft (6) is in driving connection with the lower gear set (11). The lower gear set (11) is in driving connection with an intermediate disc (10). The intermediate disc (10) is longitudinally inclined at 15 - 45 degrees.

2. The combined plowing and tilling machine applicable to paddy fields according to claim 1, wherein The main gear set (2) includes an input gear (21) connected to an input shaft (3). The input gear (21) is in driving connection with a first bevel gear (22). The axes of the input gear (21) and the first bevel gear (22) are perpendicular. Both sides of the cardan shafts (4) are in driving connection with the first bevel gear (22) through first corner bevel gear sets (23). The lower gear set (11) includes a first spur gear (112). One side of the main shaft (6) is in driving connection with the first spur gear (112) through a second corner bevel gear set (111). The first spur gear (112) is in driving connection with a second spur gear (113). The second spur gear (113) is in driving connection with the intermediate disc (10) through a third corner bevel gear set (114). The first corner bevel gear set (23), the second corner bevel gear set (111), and the third corner bevel gear set (114) are each composed of two corner bevel gears.

3. The combined ploughing and tilling machine applicable to paddy fields according to claim 1, characterized in that, The lateral inclination angle of the main shaft (6) is 28 degrees, and the longitudinal inclination angle of the intermediate disc (10) is 28 degrees.

4. A combined plowing and tilling machine applicable to paddy fields according to claim 1, characterized in that The main shaft (6) is fixedly connected to the disc (7). Multiple groups of mounting rings (61) are welded on the main shaft (6). On the side of the disc (7) facing away from the mounting rings (61), a clamping ring (62) and a reinforcing ring (63) are sequentially provided. The clamping ring (62), the reinforcing ring (63), and the disc (7) are fixedly installed on the mounting rings (61) through bolts.

5. A combined plowing and tilling machine applicable to paddy fields according to claim 1, characterized in that, The traction frame (1) is provided with a connecting shaft (8) parallel to the main shaft (6), the connecting shaft (8) comprising a fixed shaft (81) and a limiting rod (82), the fixed shaft (81) being connected to the disc (7) via a connecting arm (9), the connecting arm (9) being hinged to the fixed shaft (81), the fixed shaft (81) and the connecting arm (9) being provided with a pre-compression elastic member so that the connecting arm (9) is pressed downwardly against the limiting rod (82), the connecting arm (9) being fixedly connected to a connecting bearing (13), the outer ring of the connecting bearing (13) being fixedly connected to the connecting arm (9), and the connecting bearing (13) being fixedly connected to the connecting arm (9). The inner ring of the connecting bearing (13) is fixedly connected to the disc (7); an opening is provided in the middle of the connecting bearing (13) and the disc (7); the diameter of the opening is larger than the diameter of the main shaft (6); the main shaft (6) passes through the openings of each connecting bearing (13) and the disc (7) and is flexibly driven with the inner ring of each connecting bearing (13); the connecting bearing (13) and the disc (7) are capable of radial movement relative to the main shaft (6); a detection rope (83) is provided above the connecting arm (9); when the connecting arm (9) contacts the detection rope (83), the lifting structure is triggered to lift the traction frame (1).

6. The combined plowing and tilling machine applicable to paddy fields according to claim 5, characterized in that, When the connecting arm (9) is pressed against the limiting rod (82), the main shaft (6) is eccentric relative to the opening, the main shaft (6) is biased toward the top, and the inner wall of the connecting bearing (13) and the corresponding position of the main shaft (6) are provided with transmission teeth, which are meshed with each other.

7. The combined plowing and tilling machine applicable to paddy fields according to claim 5, characterized in that, The main shaft (6) is connected to the connecting bearing (13) via a transmission member (12); the transmission member (12) comprises a traction belt (122); one end of the traction belt (122) is connected to the connecting bearing (13); the other end of the traction belt (122) is connected to the main shaft (6) via a connecting plate (121); and the traction belt (122) is elastic.

8. A combined plowing and tilling machine applicable to paddy fields according to claim 7, characterized in that, Mounting rods (123) are provided at both ends of the traction belt (122), threads are provided on the mounting rods (123), and corresponding mounting holes are provided on the connecting bearing (13) and the connecting plate (121).

9. The combined plowing and tilling machine applicable to paddy fields according to claim 7, characterized in that, The connecting plate (121) passes through the main shaft (6) and is capable of floating relative to the main shaft (6). Both ends of the connecting plate (121) are provided with traction belts (122). The length of the connecting plate (121) is greater than or equal to the diameter of the main shaft (6). When the connecting arm (9) is in close contact with the limiting rod (82), a gap is left between the main shaft (6) and the connecting bearing (13).

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