A combined ploughing and cultivating machine suitable for paddy fields

Abstract

The application relates to the technical field of farming equipment, and discloses a combined plowing and cultivating 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 drivingly connected with multiple groups of discs, the traction frame is provided with multiple groups of scrapers corresponding to the discs, the middle part of the traction frame is provided with a lower gear set with the same height as the main shaft, one side of the main shaft is drivingly connected with the lower gear set, the lower gear set is drivingly connected with an intermediate disc, and the intermediate disc is longitudinally inclined by 15-45 degrees. The combined plowing and cultivating all-in-one machine suitable for paddy fields is characterized in that the traction frame is dovetail-shaped, the discs on the traction frame are symmetrically arranged, the transverse reaction forces borne by the two discs are counteracted, the tractor is prevented from slipping and deviating, the plowing depth and uniformity are ensured, and the traction frame is provided with the scrapers, so that excessive adhesion or weeds on the main shaft and the discs can be scraped off.

Description

TECHNICAL FIELD

[0001] The application relates to the technical field of farming equipment, and in particular to a combined plowing and cultivating machine suitable for paddy fields. BACKGROUND

[0002] The disc plow is core equipment for plowing, which is connected with a tractor through three-point suspension and is matched with the tractor. When working, the disc blade rotates to plow the soil.

[0003] When the disc plow is used in a paddy field, the following problems exist. First, because the soil in the paddy field is sticky, the soil is easily adhered to the surface of the disc during plowing, which reduces the cutting efficiency and requires frequent stop and cleaning. When the soil is too wet, second, the rolling resistance of the disc is increased, and the disc plow is often tilted to one side, which may cause the tractor to slip and deviate, affecting the plowing depth and uniformity.

[0004] When the current disc plow is driven by the tractor, the power transmission path has the problem of multiple rotation direction conversions. The traditional universal shaft transmission scheme mainly faces two technical bottlenecks under large-angle working conditions: one is that the increase of the transmission angle leads to the geometric growth of the lateral load; and the other is that the cross shaft part is prone to fatigue cracks under alternating stress. This makes the failure rate of the disc plow relatively high.

[0005] The traditional disc plow usually has a group of discs that are not on the main shaft and have different inclination angles, which are used to balance the lateral force and enhance the deep plowing effect. However, because they are away from the main shaft, the transmission structure is relatively complex and the failure rate is high. SUMMARY

[0006] The application provides a combined plowing and cultivating machine suitable for paddy fields. The discs on the machine are symmetrically arranged, the lateral reaction forces on the discs on both sides are counteracted, the tractor is prevented from slipping and deviating, the plowing depth and uniformity are ensured, and each disc can be moved independently. When encountering stones or locally hard soil, the corresponding disc can be moved upward to reduce the damage probability.

[0007] To achieve the above-mentioned purpose, the application adopts the following technical scheme: a combined plowing and cultivating machine suitable for paddy fields, comprising a traction frame, a main gear set is arranged in the middle of the traction frame, an input shaft is drivingly connected with the main gear set, a universal shaft is drivingly connected with the main gear set, a main shaft is drivingly connected with the universal shaft through a side gear set at the end, the main shaft is transversely inclined by 15-45 degrees, a plurality of groups of discs are drivingly connected with the main shaft, a plurality of scrapers corresponding to the discs are arranged on the traction frame, a lower gear set with the same height as the main shaft is arranged in the middle of the traction frame, one side of the main shaft is drivingly connected with the lower gear set, and an intermediate disc is drivingly connected with the lower gear set, and the intermediate disc is longitudinally inclined by 15-45 degrees.

[0008] Further, the main shaft is transversely inclined at an angle of 28 degrees, and the intermediate disc is transversely inclined at an angle of 28 degrees.

[0009] Further, the traction frame is provided with a connecting shaft parallel to the main shaft, the connecting shaft comprises a fixing shaft and a limiting rod, the fixing shaft is connected with the disc through a connecting arm, the connecting arm is hinged with the fixing shaft, the fixing shaft and the connecting arm are provided with a pre-pressing elastic element, so that the connecting arm is tightly attached to the limiting rod, the connecting arm is fixedly connected with a connecting bearing, the outer ring of the connecting bearing is fixedly connected with the connecting arm, and the inner ring of the connecting bearing is fixedly connected with the disc, the connecting bearing and the disc are provided with a hole in the middle, the diameter of the hole is greater than the diameter of the main shaft, the main shaft passes through the hole of each connecting bearing and the disc and is flexibly connected with the inner ring of each connecting bearing, and the connecting bearing and the disc can move radially relative to the main shaft; each disc can be moved independently, and when a stone or a local soil is too hard, the corresponding disc can be moved upward to unload the force, so that the force is not too concentrated and the disc is not damaged.

[0010] Further, the upper portion of the connecting arm is provided with a detection cable, when the connecting arm contacts the detection cable, the lifting structure is triggered to lift the traction frame, and when the hard stone cannot be passed, the disc is lifted.

[0011] Further, when the connecting arm is attached to the limiting rod, the main shaft is eccentric relative to the hole, the main shaft is deviated to the top, the inner wall of the connecting bearing and the corresponding position of the main shaft are provided with transmission teeth, and the transmission teeth are meshed with each other, so that the eccentricity increases the radial movement amount of the disc.

[0012] Further, the main shaft is connected with the connecting bearing through a transmission element, the transmission element comprises a traction belt, one end of the traction belt is connected with the connecting bearing, and the other end of the traction belt is connected with the main shaft through a connecting plate; the traction belt can be radially moved while being transmitted.

[0013] Further, the two ends of the traction belt are provided with mounting rods, the mounting rods are provided with threads, and the connecting bearing and the connecting plate are provided with corresponding mounting holes.

[0014] Further, the traction belt is elastic.

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

[0016] Further, when the connecting arm is attached to the limiting rod, a gap is left between the main shaft and the connecting bearing.

[0017] The present application has the following beneficial effects:

[0018] The application provides a combined ploughing machine suitable for paddy fields, the traction frame is dovetail-shaped, and the disc is symmetrically arranged on the traction frame, the transverse reaction force received by the two discs is counteracted, the tractor is prevented from slipping and deviating, the ploughing depth and uniformity are ensured, and the scraper is arranged on the traction frame, and the adhesion or weeds accumulated on the main shaft and the disc are scraped off by the main shaft.

[0019] When the transmission direction is changed, the transition is performed through the corner gear set, the pressure received by the universal shaft is reduced, and the failure rate is reduced.

[0020] Secondly, on the one hand, each disc can be moved independently through the connection with the connecting arm, and when a stone or locally hard soil is encountered, the corresponding disc can be moved upward to release the force, so that the force is not too concentrated, and the disc is not damaged, 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, so that the force is dispersed, and the probability of damage to the main shaft is reduced.

[0021] In addition, the single disc can move relatively, when the soil hardness is uneven, only the local ploughing depth is affected, and the normal ploughing depth can be ensured at other positions. BRIEF DESCRIPTION OF DRAWINGS

[0022] In order to more clearly illustrate the technical solutions in the embodiments of the application or the prior art, the following will briefly introduce the drawings needed to be used in the embodiments or the prior art description. Obviously, the drawings in the following description only are the embodiments of the application, and for those skilled in the art, other drawings can be obtained without creative labor based on the provided drawings:

[0023] Figure 1 It is a schematic view of the embodiment one of the application;

[0024] Figure 2 It is a partial view of the embodiment one of the application;

[0025] Figure 3 It is a schematic view of the lower gear set in the embodiment one of the application;

[0026] Figure 4 It is a schematic view of the main gear set in the embodiment one of the application;

[0027] Figure 5 It is a schematic view of the side gear set in the embodiment one of the application;

[0028] Figure 6 It is a connection schematic view of the main shaft and the disc in the embodiment one of the application;

[0029] Figure 7 It is a schematic view of the embodiment two of the application;

[0030] Figure 8This is a top view of Embodiment 2 of the present invention;

[0031] Figure 9 This is a schematic diagram of the connection of the disk in Embodiment 2 of the present invention;

[0032] Figure 10 This is a schematic diagram of the connection of the disks in embodiments three and four of the present invention;

[0033] Figure 11 This is a side view of the disk in embodiments two, three, and four of the present invention.

[0034] In the diagram: 1. Traction 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. Universal joint; 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 component; 121. Connecting plate; 122. Traction belt; 123. Mounting rod; 13. Connecting bearing; 14. Scraper; 15. Tiller. Detailed Implementation

[0035] The technical solutions of the embodiments of the present invention will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only some embodiments of the present invention, and not all embodiments. Based on the embodiments of the present invention, all other embodiments obtained by those skilled in the art without creative effort are within the scope of protection of the present invention.

[0036] Example 1, please refer to Figures 1-6 A combined plow and tillage machine suitable for paddy fields includes a dovetail-shaped traction frame 1 with mounting arms on both sides. The mounting arms are symmetrical, and the lateral tilt angle of the mounting arms is 15-45 degrees, preferably 28 degrees. Lateral tilt refers to the direction perpendicular to the forward direction. A main gear set 2 is located in the middle of the traction frame 1. The main gear set 2 includes an input gear 21 coaxial with an input shaft 3. The input shaft 3 is connected to the tractor. The input gear 21 is driven by a first bevel gear 22. The input gear 21 and the first bevel gear 22 are perpendicular, adjusting the rotating shaft from lateral to lateral. Both ends of the rotating shaft of the first bevel gear 22 are connected to universal joints 4 through a first corner bevel gear set 23. For ease of demonstration, ... Figure 2The upper universal shaft 4 is exposed outside the shell, while the lower universal shaft 4 is shielded by the shell, the first corner bevel gear set 23 comprises two corner bevel gears, one of which is fixedly connected with the universal shaft 4, and the other is fixedly connected with the rotating shaft of the first bevel gear 22, the universal shaft 4 is transversely inclined by 15-45 degrees, the first bevel gear 22 is drivingly connected with an output gear 24, the output gear 24 is drivingly connected with the tiller 15, the output gear 24 adjusts the rotating shaft from transverse to longitudinal, and outputs power to the tiller 15 at the rear, the universal shaft 4 is drivingly connected with 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, the main shaft 6 is located directly below the universal shaft 4, a plurality of gears are arranged in the side gear set 5, the rotating direction of the main shaft 6 is adjusted to meet the tillage requirements, the main shaft 6 is drivingly connected with a plurality of discs 7, the discs 7 cut into the soil layer and rotate to realize soil turning and covering, a plurality of scrapers 14 are arranged on the traction frame 1, each disc 7 is correspondingly provided with a pair of scrapers 14 on the left and right sides, and the scrapers 14 clean the clay, straw and weeds wrapped on the main shaft 6 and the discs 7, and the scrapers 14 are installed on a scraper frame and can be adjusted in position.

[0037] The intermediate disc 10 balances the lateral force and turns the soil to both sides, but it is far away from the main gear set 2 and has a large included angle, in order to realize transmission, a lower gear set 11 is arranged at 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 comprises a first flat gear 112, one side of the main shaft 6 is drivingly connected with the first flat gear 112 through a second corner bevel gear set 111, the first flat gear 112 is drivingly connected with a second flat gear 113, the first flat gear 112 and the second flat gear 113 are connected through a gear set, and the second flat gear 113 is drivingly connected with the intermediate disc 10 through a third corner bevel gear set 114, the intermediate disc 10 is transversely 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, the second corner bevel gear set 111 and the third corner bevel gear set 114 each comprise two corner bevel gears, power is transmitted to the lower gear set 11 through the main shaft 6, which can simplify the transmission structure and reduce the failure rate.

[0038] Please refer to Figure 7 , the main shaft 6 is fixedly connected with the disc 7, a plurality of mounting rings 61 are welded on the main shaft 6, the number of the mounting rings 61 is flexibly adjusted according to requirements, generally 3-8 on each side, the disc 7 is mounted on the mounting ring 61, the concave surface of the disc 7 faces the mounting ring 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 on the mounting ring 61 by bolts to clamp and fix the disc 7. In order to facilitate replacement and maintenance, the clamping ring 62 and the reinforcing ring 63 are each composed of two split parts.

[0039] In the embodiment one, each disc plough blade of the disc plough is installed on the same rotating shaft. On the one hand, when ploughing, a certain disc plough blade may encounter a hard stone or a hard object, and due to the rigidity of the rotating shaft, the force of the disc plough may be concentrated on the disc plough blade, which may cause damage to the disc plough blade and affect ploughing. On the other hand, the reaction force of each disc plough is concentrated on the rotating shaft, and the rotating shaft is also easily damaged.

[0040] In the embodiment two, on the basis of the embodiment one, referring to Figure 8 and Figure 11 , the traction 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 with the disc 7 through the connecting arm 9, the connecting arm 9 is hinged with the fixed shaft 81, the fixed shaft 81 and the connecting arm 9 are provided with a pre-pressing elastic element, so that the connecting arm 9 is tightly attached to the limiting rod 82, in normal ploughing, the reaction force of the disc 7 cannot overcome the elastic force of the elastic element, when the disc 7 encounters a stone or a hard object, the force is concentrated on the disc 7, the reaction force of the disc 7 can overcome the elastic force of the elastic element, so that the connecting arm 9 rotates, and the disc 7 effectively unloads, 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, 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, the disc 7 is installed on the flange through a fastening screw, the connecting bearing 13 and the disc 7 are provided with a hole, the diameter of the hole is greater than the diameter of the main shaft 6, the main shaft 6 passes through the hole of each connecting bearing 13 and the disc 7 and is drivingly connected with the inner ring of each connecting bearing 13, the main shaft 6 simultaneously drives the inner ring of each connecting bearing 13 to rotate, thereby driving the disc 7 to rotate, when the reaction force of the disc 7 is too large, the connecting bearing 13 and the disc 7 can move relative to the main shaft 6 to unload.

[0041] When the connecting arm 9 is tightly attached to the limiting rod 82, the main shaft 6 is eccentric relative to the hole, the main shaft 6 is deviated to the top, the inner wall of the connecting bearing 13 and the corresponding position of the main shaft 6 are provided with transmission teeth, the two are mutually engaged, 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 out of contact with the main shaft 6, and the connecting arm 9 has a large moving space.

[0042] The upper portion of the connecting arm 9 is provided with a detection cable 83, when the connecting arm 9 is in contact with the detection cable 83, the lifting structure lifts the traction frame 1, at the same time, the cockpit also issues a corresponding alarm, for smaller stones, the disc 7 can pass over after unloading the force, and for larger hard objects, the connecting arm 9 rotates to the maximum angle and cannot pass over, the unloading is achieved by lifting the traction frame 1, the detection cable 83 is provided with a pressure sensor, whether the detection cable 83 is in contact with the connecting arm 9 is judged by detecting the tension change of the detection cable 83.

[0043] In the third embodiment, the transmission mode of the second embodiment is replaced by the transmission member 12 to solve the problem of the frequent jumping of the disc 7 and the slipping of the transmission gear. The transmission member 12 comprises a traction belt 122, one end of the traction belt 122 is connected with the connecting bearing 13, the other end of the traction belt 122 is connected with 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, and the connecting bearing 13 and the disc 7 can move relative to the main shaft 6 when the force is too large.

[0044] In the fourth embodiment, the traction belt 122 is connected with the main shaft 6 through the connecting plate 121, the connecting plate 121 is floating relative to the main shaft 6, the main shaft 6 is provided with a through slot corresponding to the connecting plate 121, the connecting plate 121 is provided with the traction belt 122 at both ends, the length of the connecting plate 121 is the same as the diameter of the main shaft 6 or slightly larger than the diameter of the main shaft 6, the traction belt 122 can not have elasticity because the connecting plate 121 can float, the traction belt 122 moves to the side of being tightened when the connecting bearing 13 moves relative to the main shaft 6, and the both sides have moving space.

[0045] The both ends of the traction belt 122 are provided with the mounting rod 123, the mounting rod 123 is provided with a thread, the connecting bearing 13 and the connecting plate 121 are both provided with corresponding mounting holes, the mounting rod 123 is screwed into the mounting hole to complete the installation of the transmission member 12, the main shaft 6 and the connecting bearing 13 have a gap therebetween when the connecting arm 9 is close to the limiting rod 82, and the main shaft 6 avoids extruding the traction belt 122.

[0046] The above description of the disclosed embodiments enables one skilled in the art to make or use the application. Numerous modifications to these embodiments will be apparent to those skilled in the art, and the general principles defined herein can be applied to other embodiments without departing from the spirit or scope of the application. Therefore, the present application is not intended to be limited to the embodiments shown herein but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A combined plow and tillage machine suitable for paddy fields, comprising a traction frame (1), wherein a main gear set (2) is provided in the middle of the traction frame (1), and the main gear set (2) is connected to an input shaft (3) for transmission, characterized in that, The main gear set (2) is symmetrically provided with universal shafts (4) on both sides. The universal shafts (4) are connected to the main gear set (2) in a driving connection. The universal shafts (4) are connected to the main shaft (6) through the side gear set (5) at the end. The main shaft (6) is tilted laterally at 15-45 degrees. The main shaft (6) is connected to multiple sets of discs (7). The traction frame (1) is provided with multiple sets of scrapers (14) corresponding to the discs (7). The middle part of the traction frame (1) is provided with a lower gear set (11) at the same height as the main shaft (6). One side of the main shaft (6) is connected to the lower gear set (11) in a driving connection. The lower gear set (11) is connected to an intermediate disc (10) in a driving connection. The intermediate disc (10) is tilted longitudinally at 15-45 degrees. The main gear set (2) includes an input gear (21) connected to the input shaft (3). The input gear (21) is connected to the first bevel gear (22). The axes of the input gear (21) and the first bevel gear (22) are perpendicular. The universal shafts (4) on both sides are connected to the first bevel gear (22) through the first corner bevel gear set (23). The lower gear set (11) includes the first flat gear (112). The main shaft (6) on one side is connected to the first flat gear (112) through the second corner bevel gear set (111). The first flat gear (112) is connected to the second flat gear (113). The second flat gear (113) is connected to the intermediate disk (10) through the 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 all composed of two corner bevel gears.

2. The combined plow and tillage machine suitable for paddy fields according to claim 1, characterized in that, The main shaft (6) has a lateral tilt angle of 28 degrees, and the intermediate disk (10) has a longitudinal tilt angle of 28 degrees.

3. The combined plow and tillage machine suitable for paddy fields according to claim 1, characterized in that, The main shaft (6) is fixedly connected to the disc (7). Multiple sets of mounting rings (61) are welded on the main shaft (6). On the side of the disc (7) facing away from the mounting ring (61), a clamping ring (62) and a reinforcing ring (63) are arranged in sequence. The clamping ring (62), the reinforcing ring (63) and the disc (7) are fixedly mounted on the mounting ring (61) by bolts.

4. A combined plow and tillage machine suitable for 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) 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 pre-compression elastic elements so that the connecting arm (9) is pressed downward against the limiting rod (82). The connecting arm (9) is fixedly connected to a connecting bearing (13). The outer ring of the connecting bearing (13) is fixedly connected to the connecting arm (9). (13) The inner ring is fixedly connected to the disk (7). The connecting bearing (13) and the disk (7) have openings in the middle. The diameter of the openings 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 disk (7) and is flexibly driven by the inner ring of each connecting bearing (13). The connecting bearing (13) and the disk (7) can move radially relative to the main shaft (6). The connecting arm (9) is provided with a detection cable (83). When the connecting arm (9) contacts the detection cable (83), the lifting structure is triggered to lift the traction frame (1).

5. A combined plow and tillage machine suitable for paddy fields according to claim 4, characterized in that, When the connecting arm (9) is close to the limiting rod (82), the main shaft (6) is eccentric relative to the opening. The main shaft (6) is biased towards the top. The inner wall of the connecting bearing (13) and the corresponding position of the main shaft (6) are provided with transmission teeth, which mesh with each other.

6. A combined plow and tillage machine suitable for paddy fields according to claim 5, characterized in that, The main shaft (6) is connected to the connecting bearing (13) via a transmission component (12). The transmission component (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) via a connecting plate (121). The traction belt (122) is elastic.

7. A combined plow and tillage machine suitable for paddy fields according to claim 6, characterized in that, The traction belt (122) has mounting rods (123) at both ends. The mounting rods (123) are threaded, and the connecting bearing (13) and the connecting plate (121) are provided with corresponding mounting holes.

8. A combined plow and tillage machine suitable for paddy fields according to claim 6, characterized in that, The connecting plate (121) passes through the main shaft (6) and can float 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 close to the limiting rod (82), there is a gap between the main shaft (6) and the connecting bearing (13).

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