A turnover plough having hydraulic overload protection and hydraulic amplitude modulation

Abstract

The present application belongs to the technical field of turnover plough for agricultural machinery, and particularly relates to a turnover plough with hydraulic overload protection and hydraulic amplitude adjustment device, comprising a suspension plough head assembly, a rotating arm assembly, an I-beam assembly, an overload protection plough body assembly, an adjusting screw rod assembly, an adjustable oil cylinder, a connecting rod assembly, an amplitude adjustment oil cylinder, an amplitude adjustment pull rod, an amplitude adjustment connecting rod assembly, a depth limiting wheel pull rod and a girder assembly, the suspension plough head assembly is connected with a three-point suspension device of a tractor to form a suspension traction mechanism of the turnover plough, and the rotating arm assembly is arranged on the upper portion of the suspension plough head assembly, the turnover plough can realize overload protection through the synergistic effect of the overload protection plough body assembly and the energy accumulator assembly, and meanwhile, the turnover plough can realize the adjustment of the working width of the plough body assembly through the extension and retraction of the amplitude adjustment oil cylinder, and can realize the simultaneous adjustment of the overload protection plough body assembly and the depth limiting wheel assembly.

Description

TECHNICAL FIELD

[0001] The present application belongs to the technical field of turnover ploughs for agricultural machinery, and particularly relates to a turnover plough with hydraulic overload protection and hydraulic amplitude adjustment device. BACKGROUND

[0002] The hydraulic turnover plough is a commonly used land tillage machine. During land tillage operation, there may be obstacles such as stones, roots or hard points in the tillage layer of the land. Therefore, an overload protection device needs to be provided on the turnover plough. The overload protection device of the traditional turnover plough generally achieves overload protection through a safety bolt. When overload occurs, the safety bolt is cut off. At this time, the machine needs to be stopped, and the complete safety bolt needs to be replaced before the machine can continue to work. This consumes a lot of time and affects the operation efficiency. The existing stretch cylinder type hydraulic overload protection turnover plough on the market has a low reliability because the cylinder pull rod is easy to break. It still cannot meet the needs of users.

[0003] On the other hand, the adjustable width turnover ploughs currently sold and used on the market mainly achieve the adjustment of the operation width through different combinations of multiple sets of installation hole positions on the plough body support and depth limiting wheel installation support and the plough beam installation hole positions. When adjusting the width, multiple people need to work together to loosen the installation bolts of each share plough body support and depth limiting wheel installation support and replace the positions of the bolt installation holes. After the installation is completed, the plough body forward direction and the depth limiting wheel forward direction need to be re-adjusted to be consistent with the tractor forward direction. The whole adjustment process is very tedious, has a high labor intensity, takes a long time, and has poor safety. Moreover, the width can only be adjusted in steps through a few pre-set installation holes, and continuous adjustment of the width cannot be achieved. SUMMARY

[0004] The purpose of the present application is to provide a turnover plough with hydraulic overload protection and hydraulic amplitude adjustment device. The overall structure design is scientific. Through the cooperative action of the overload protection plough body assembly and the accumulator assembly and other components, the turnover plough overload protection and overload non-stop can be achieved. The turnover plough has the advantages of high automation degree and high operation efficiency. At the same time, the hydraulic continuous amplitude adjustment does not require other operations, is simple to operate, and saves time and effort.

[0005] In order to achieve the above-mentioned purpose, the present application adopts the following technical solutions:

[0006] The invention discloses a turnover plough with hydraulic overload protection and hydraulic amplitude modulation device, which comprises a suspension plough head assembly, a rotating arm assembly, an I-beam assembly, an overload protection plough body assembly, an adjusting screw rod assembly, an adjustable oil cylinder, a connecting rod assembly, an amplitude modulation oil cylinder, an amplitude modulation pull rod, an amplitude modulation connecting rod assembly, a depth limiting wheel pull rod and a beam assembly. The suspension plough head assembly is connected with a three-point suspension device of a tractor to form a suspension traction mechanism of the turnover plough. The rotating arm assembly is arranged on the upper portion of the suspension plough head assembly. The I-beam assembly and the adjustable oil cylinder are arranged on the rotating arm assembly and hinged to the rotating arm assembly. The beam assembly and the connecting rod assembly are hinged to the other end of the I-beam assembly. The adjusting screw rod assembly is arranged in the middle of the I-beam assembly. The other end of the adjusting screw rod assembly is connected with the beam assembly. The other end of the adjustable oil cylinder is connected with the connecting rod assembly. The amplitude modulation oil cylinder and the amplitude modulation pull rod are respectively arranged on the other end portion and the middle portion of the connecting rod assembly. The other end of the amplitude modulation oil cylinder is hinged to the beam assembly. The other end of the amplitude modulation pull rod is hinged to the amplitude modulation connecting rod assembly and the overload protection plough body assembly. The overload protection plough body assembly is hinged to the amplitude modulation connecting rod assembly and the beam assembly. The accumulator assembly is fixedly arranged on the rear portion of the beam assembly. The accumulator assembly is connected with the overload protection oil cylinder of the overload protection plough body assembly through a hydraulic oil pipe.

[0007] The overload protection plough body assembly comprises a plough body support assembly, a plough column mounting plate, an oil cylinder push rod, an overload protection oil cylinder, a large plough column, a plough body, a small plough column and a small auxiliary plough. The plough body support assembly is hinged to the beam assembly and the amplitude modulation connecting rod assembly. Two plough column mounting plates are hinged to the middle portion of the plough body support assembly. The oil cylinder push rod is hinged to the upper portion and the lower portion of the plough body support assembly. The overload protection oil cylinder is fixedly arranged on the rear portion between the two plough column mounting plates. The oil cylinder push rod is arranged on the end portion between the two plough column mounting plates and is in contact with the piston of the overload protection oil cylinder.

[0008] Further, the large plough column is fixedly arranged on the rear portion between the two plough column mounting plates. The other end of the large plough column is fixedly arranged with the plough body. The small plough column is fixedly arranged on the middle portion between the two plough column mounting plates. The other end of the small plough column is fixedly arranged with the small auxiliary plough.

[0009] Further, the depth limiting wheel mounting plate is fixedly arranged on the middle rear portion of the beam assembly. The depth limiting wheel assembly is hinged to the depth limiting wheel mounting plate. The depth limiting wheel pull rod is hinged to the depth limiting wheel assembly. The other end of the depth limiting wheel pull rod is hinged to the amplitude modulation connecting rod assembly.

[0010] Further, the I-beam assembly, the beam assembly and the adjusting screw rod assembly form a triangular structure. When the adjusting screw rod assembly is elongated, the position of the plough is moved to the right. When the adjusting screw rod assembly is shortened, the position of the plough is moved to the left. Thus, the plough can be adapted to different wheel base tractors.

[0011] Further, the connecting rod assembly, the amplitude adjusting oil cylinder and the beam assembly form a triangular structure, when the hydraulic oil outputted by the tractor multi-way valve can control the extension or shortening of the amplitude adjusting oil cylinder, the beam assembly and the connecting rod assembly rotate relative to the hinge, drive the amplitude adjusting connecting rod assembly to move, and then drive the overload protection plow body assembly and the depth limiting wheel assembly to rotate relative to the hinge point of the beam assembly and the depth limiting wheel mounting plate fixed on the beam assembly, and the included angle between the overload protection plow body assembly and the depth limiting wheel assembly and the beam assembly changes.

[0012] Further, when the amplitude adjusting oil cylinder is extended or shortened, the shape of the parallelogram structure formed by the rotating arm assembly, the I-beam assembly, the adjusting screw rod assembly and the connecting rod assembly changes, and the included angle between the beam assembly and the advancing direction changes accordingly, and the left and right positions of the moldboard plow also change accordingly.

[0013] Further, a plurality of overload protection plow body assemblies are hinged on the amplitude adjusting connecting rod assembly, and each overload protection plow body assembly is hinged on the beam assembly at the same time, when the width is adjusted, the angle of the plurality of overload protection plow body assemblies relative to the beam assembly changes at the same time under the action of the amplitude adjusting connecting rod assembly, so that the width of the overload protection plow body assembly at each moment is always the same.

[0014] Further, the amplitude adjusting connecting rod assembly is arranged in parallel with the beam assembly.

[0015] The hydraulic overload protection and hydraulic amplitude adjusting device of the moldboard plow has the following technical features and advantages compared with the existing moldboard plow.

[0016] 1. The moldboard plow can realize overload protection of the moldboard plow through the cooperative action of the overload protection plow body assembly and the energy accumulator assembly, and the protection process does not need human intervention and the overload does not stop the machine, so that the moldboard plow has the advantages of high automation degree and high operation efficiency.

[0017] 2. The moldboard plow can realize the adjustment of the operation width of the plow body assembly through the extension and retraction of the amplitude adjusting oil cylinder, the amplitude adjusting connecting rod assembly is hinged on a plurality of overload protection plow body assemblies and depth limiting wheel assemblies at the same time, the angle of the overload protection plow body assembly and the depth limiting wheel assembly relative to the beam assembly can be adjusted at the same time, and the angle of the beam assembly relative to the advancing direction also changes accordingly, so that the moldboard plow has the advantages of high automation degree, simple operation, time and labor saving, continuous hydraulic amplitude adjustment without other operations, reduced adjustment difficulty, improved operation efficiency, greatly reduced cultivation cost, and wide application and promotion. BRIEF DESCRIPTION OF DRAWINGS

[0018] Figure 1The overall structure schematic diagram of the turnover plough with hydraulic overload protection and hydraulic amplitude modulation device of the present application;

[0019] Figure 2 The structure schematic diagram of the overload protection plough body assembly in the present application;

[0020] Figure 3 The structure schematic diagram of the overload protection plough body assembly when triggering overload protection in the present application;

[0021] The figure mark is: 1, the suspension plough head assembly; 2, the rotating arm assembly; 3, the I-beam assembly; 4, the overload protection plough body assembly; 401, the plough body support assembly; 402, the plough column mounting plate; 403, the oil cylinder push rod; 404, the overload protection oil cylinder; 405, the large plough column; 406, the plough body; 407, the small plough column; 408, the small sub-plough; 5, the adjustment screw rod assembly; 6, the adjustable oil cylinder; 7, the connecting rod assembly; 8, the amplitude modulation oil cylinder; 9, the amplitude modulation pull rod; 10, the amplitude modulation connecting rod assembly; 11, the depth limiting wheel pull rod; 12, the depth limiting wheel assembly; 13, the depth limiting wheel mounting plate; 14, the large beam assembly; 15, the accumulator assembly. DETAILED DESCRIPTION

[0022] In order to make the personnel in the technical field better understand the technical solutions of the present application, the present application will be further described in detail below in combination with the description of the drawings and specific embodiments. It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it can be directly or indirectly connected to the other element. When an element is referred to as being "connected to" another element, it can be directly or indirectly connected to the other element. The terms "left" and "right" used in the present application to indicate the orientation are based on the specific structure shown in the drawings and do not constitute a limitation on the structure.

[0023] Specific embodiment 1: as described in the specification of the present application Figure 1The provided turnover plough with hydraulic overload protection and hydraulic amplitude modulation device mainly comprises a suspension plough head assembly 1, a rotating arm assembly 2, an I-beam assembly 3, an overload protection plough body assembly 4, an adjusting screw rod assembly 5, an adjustable oil cylinder 6, a connecting rod assembly 7, an amplitude modulation oil cylinder 8, an amplitude modulation pull rod 9, an amplitude modulation connecting rod assembly 10, a depth limiting wheel pull rod 11, a depth limiting wheel assembly 12, a depth limiting wheel mounting plate 13, a beam assembly 14, wherein the suspension plough head assembly 1 is connected with a three-point suspension device of a tractor to form a suspension traction mechanism of the turnover plough, the tractor drives the turnover plough to carry out ploughing work through the suspension plough head assembly 1 and ensures that the advancing direction of the turnover plough is consistent with the traction direction of the tractor, the rotating arm assembly 2 is arranged on the suspension plough head assembly 1, the connecting holes of the rotating arm assembly 2 are hingedly connected with the I-beam assembly 3 and the adjustable oil cylinder 6, the other end of the I-beam assembly 3 is hingedly connected with the beam assembly 14 and the connecting rod assembly 7, the adjusting screw rod assembly 5 is connected with the middle part of the I-beam assembly 3, the other end of the adjusting screw rod assembly 5 is also connected with the beam assembly 14, the other end of the adjustable oil cylinder 6 is hingedly connected with the connecting rod assembly 7, the other end and the middle part of the connecting rod assembly 7 are connected with the amplitude modulation oil cylinder 8 and the amplitude modulation pull rod 9, the amplitude modulation oil cylinder 8 is connected with a multi-way valve of the tractor through a hydraulic pipeline when installed, the output hydraulic oil of the multi-way valve of the tractor can control the length of the amplitude modulation oil cylinder, the other end of the amplitude modulation oil cylinder 8 is connected with the beam assembly 14, the other end of the amplitude modulation pull rod 9 is hingedly connected with the amplitude modulation connecting rod assembly 10 and the overload protection plough body assembly 4, the amplitude modulation connecting rod assembly 10 is arranged in parallel with the beam assembly 14 when installed, the overload protection plough body assembly 4 is hingedly connected with the amplitude modulation connecting rod assembly 10 and also hingedly connected with the beam assembly 14, the depth limiting wheel mounting plate 13 is fixedly installed on the rear middle part of the beam assembly 14, the depth limiting wheel assembly 12 is hingedly connected with the depth limiting wheel mounting plate 13, the depth limiting wheel pull rod 11 is hingedly connected with the depth limiting wheel assembly 12, the other end of the depth limiting wheel pull rod 11 is hingedly connected with the amplitude modulation connecting rod assembly 10, the accumulator assembly 15 is fixedly installed on the rear part of the beam assembly 14, and the accumulator assembly 15 is connected with the overload protection oil cylinder 404 of the overload protection plough body assembly 4 through a hydraulic oil pipe.

[0024] As described in the specification Figure 2As shown, the overload protection plow body assembly 4 in the application comprises a plow body support assembly 401, a plow column mounting plate 402, an oil cylinder push rod 403, an overload protection oil cylinder 404, a large plow column 405, a plow body 406, a small plow column 407, and a small sub-plow 408. The plow body support assembly 401 is hinged to the large beam assembly 14 and the amplitude adjustment linkage assembly 10. Two plow column mounting plates 402 are hinged to the middle of the plow body support assembly 401. An oil cylinder push rod 403 is hinged to the upper and lower parts of the plow body support assembly 401. An overload protection oil cylinder 404 is fixed to the rear part between the two plow column mounting plates 402. The oil cylinder push rod 403 is installed at the end between the two plow column mounting plates 402 and in contact with the piston of the overload protection oil cylinder 404. A large plow column 405 is fixed to the upper and lower parts between the two plow column mounting plates 402. A plow body 406 is fixed to the other end of the large plow column 405. A small plow column 407 is fixed to the upper and lower parts between the two plow column mounting plates 402. A small sub-plow 408 is fixed to the other end of the small plow column 407.

[0025] It should be further pointed out that the I-shaped beam assembly 3, the large beam assembly 14, and the adjusting screw assembly 5 form a triangular structure. When the adjusting screw assembly 5 is extended, the position of the plow is moved to the right. When the adjusting screw assembly 5 is shortened, the position of the plow is moved to the left, so as to adapt to different wheelbase tractors. The linkage assembly 7, the amplitude adjustment oil cylinder 8, and the large beam assembly 14 form a triangular structure. During use, the hydraulic oil output by the multi-way valve of the tractor can control the extension or shortening of the amplitude adjustment oil cylinder 8. The large beam assembly 14 and the linkage assembly 7 rotate relative to the hinge, drive the amplitude adjustment linkage assembly 10 to move, and then drive the overload protection plow body assembly 4 and the depth limiting wheel assembly 12 to rotate simultaneously around the hinge point of the large beam assembly 14 and the depth limiting wheel mounting plate 13 fixed to the large beam assembly 14. At this time, the angle between the overload protection plow body assembly 4, the depth limiting wheel assembly 12, and the large beam assembly 14 changes. At the same time, the shape of the parallelogram structure composed of the rotating arm assembly 2, the I-shaped beam assembly 3, the adjustable oil cylinder 6, and the linkage assembly 7 changes. At this time, the angle between the large beam assembly 14 and the forward direction changes, and the left and right positions of the plow also change accordingly.

[0026] It should be further pointed out that multiple overload protection plow body assemblies 4 can be hinged to the amplitude adjustment linkage assembly 10 according to the operation needs, and each overload protection plow body assembly 4 is also hinged to the large beam assembly 14. When the width is adjusted, the angles of the multiple overload protection plow body assemblies 4 relative to the large beam assembly 14 change simultaneously under the action of the amplitude adjustment linkage assembly 10, so as to ensure that the width of the overload protection plow body assembly 4 is always the same at any time.

[0027] The specific working and adjusting process of the turnover plow with hydraulic overload protection and hydraulic amplitude adjustment device is as follows:

[0028] I. Overload protection process as follows:

[0029] Before plowing, a certain pressure of hydraulic oil is filled in the hydraulic overload protection system composed of the turnover plow accumulator assembly 15 and the overload protection oil cylinder 404; during plowing, the plow body 406 touches the obstacle, which can increase the resistance of the plow body 406, at this time, the plow body 406 drives the large plow post 405, the overload protection oil cylinder 404, and the plow post mounting plate 402 to rotate upward around the hinge point of the plow post mounting plate 402 and the plow body support assembly 401 (at this time, the plowing depth becomes shallow), at this time, the oil cylinder push rod 403 above presses the piston of the overload protection oil cylinder 404 into the overload protection oil cylinder 404, at this time, the oil cylinder push rod 403 below is separated from the piston of the overload protection oil cylinder 404, the hydraulic oil in the overload protection oil cylinder 404 flows to the accumulator of the accumulator assembly 15, the internal pressure of the accumulator of the accumulator assembly 15 increases, and the state is as shown in the accompanying drawings of the specification. Figure 3

[0030] When the plow body 406 passes over the obstacle, under the action of the internal pressure of the accumulator of the accumulator assembly 15, the hydraulic oil flows back to the overload protection oil cylinder 404 to push the piston of the overload protection oil cylinder 404 out, at this time, under the drive of the overload protection oil cylinder 404, the plow post mounting plate 402, the overload protection oil cylinder 404, the large plow post 406, and the plow body 406 rotate around the hinge point of the plow post mounting plate 402 and the plow body support assembly 401, and finally the oil cylinder push rod 403 below contacts the piston of the overload protection oil cylinder 404, the overload protection plow body assembly 4 returns to the normal working position (the plowing depth returns to normal), the pressure of the hydraulic overload protection system returns to normal, and the state is as shown in the accompanying drawings of the specification. Figure 2

[0031] II. The hydraulic amplitude modulation process of the present application is as follows:

[0032] Firstly, before plowing, the user can connect the suspended plow head assembly 1 with the three-point suspension device of the tractor, the tractor drives the turnover plow through the suspended plow head assembly 1 to carry out plowing, and ensures that the forward direction of the turnover plow is consistent with the traction direction of the tractor, during plowing, the plow side plate of each overload protection plow body assembly 4 needs to be adjusted to be parallel to the forward direction of the tractor, at the same time, the forward direction of the depth limiting wheel assembly 12 should also be parallel to the forward direction of the tractor, and the included angle between the forward direction of the large beam assembly 14 and the plow side plate of the overload protection plow body assembly 4, the forward direction of the depth limiting wheel assembly 12, and the forward direction of the tractor is the same, which is α.

[0033] ​​When the width needs to be adjusted to be smaller, the tractor multi-way valve output hydraulic oil controls the extension of the amplitude adjusting cylinder 8, the girder assembly 14 and the connecting rod assembly 7 rotate relatively at the hinge, drive the amplitude adjusting pull rod 9 to drive the amplitude adjusting connecting rod assembly 10 to move, and then drive the overload protection plow body assembly 4 and the depth limiting wheel assembly 12 to rotate simultaneously around the hinge point of the girder assembly 14 and the depth limiting wheel mounting plate 13 fixed on the girder assembly 14, at this time, the angle α between the overload protection plow body assembly 4 and the depth limiting wheel assembly 12 and the girder assembly 14 becomes smaller, and the single plow body width is also reduced; at the same time of the extension of the amplitude adjusting cylinder 8, the parallelogram structure composed of the rotating arm assembly 2, the I-beam assembly 3, the adjustable cylinder 6 and the connecting rod assembly 7 changes in shape, the angle α between the girder assembly 14 and the forward direction becomes smaller, and the position of the first plow moves to the left accordingly, and the moving distance is the same as the width of the single plow body width reduction.

[0034] When the width needs to be adjusted to be larger, the tractor multi-way valve output hydraulic oil controls the shortening of the amplitude adjusting cylinder 8, the girder assembly 14 and the connecting rod assembly 7 rotate relatively at the hinge, drive the amplitude adjusting pull rod 9 to drive the amplitude adjusting connecting rod assembly 10 to move, and then drive the overload protection plow body assembly 4 and the depth limiting wheel assembly 12 to rotate simultaneously around the hinge point of the girder assembly 14 and the depth limiting wheel mounting plate 13 fixed on the girder assembly 14, the angle α between the overload protection plow body assembly 4 and the depth limiting wheel assembly 12 and the girder assembly 14 becomes larger, and the single plow body width is also increased; at the same time of the shortening of the amplitude adjusting cylinder 8, the parallelogram structure composed of the rotating arm assembly 2, the I-beam assembly 3, the adjustable cylinder 6 and the connecting rod assembly 7 changes in shape, the angle α between the girder assembly 14 and the forward direction becomes larger, and the position of the first plow moves to the right accordingly, and the moving distance is the same as the width of the single plow body width increase.

[0035] In summary, the turnover plow of the present application can realize overload protection of the turnover plow through the synergistic effect of the overload protection plow body assembly and the accumulator assembly and the like, and can realize the adjustment of the working width of the plow body assembly through the extension and retraction of the amplitude adjusting cylinder, the amplitude adjusting connecting rod assembly simultaneously hinged to multiple overload protection plow body assemblies and depth limiting wheel assemblies can realize the simultaneous adjustment of the angle of the overload protection plow body assembly and the depth limiting wheel assembly relative to the girder assembly, and at the same time of the angle adjustment of the overload protection plow body assembly and the depth limiting wheel assembly relative to the girder assembly, the angle of the girder assembly relative to the forward direction is also adjusted accordingly, which is high in automation degree, simple in operation, time and labor saving, and the hydraulic continuous amplitude adjustment does not need other operations, which reduces the adjustment difficulty and improves the tillage efficiency. The basic principles, main features and advantages of the present application are shown and described above. Those skilled in the art should understand that the present application is not limited by the above examples, the above examples and descriptions in the specification are only to illustrate the principles of the present application, and various changes and improvements can be made to the present application without departing from the spirit and scope of the present application, and these changes and improvements all fall within the scope of the present application.

Claims

1. A turnover plough having hydraulic overload protection and hydraulic amplitude modulation, characterised in that, The utility model provides a kind of plough, including suspension plough head component (1), rotating arm component (2), H beam component (3), overload protection plough body component (4), adjusting screw rod component (5), adjustable oil cylinder (6), connecting rod component (7), amplitude modulation oil cylinder (8), amplitude modulation pull rod (9), amplitude modulation connecting rod component (10), depth limiting wheel pull rod (11), beam component (14), rotating arm component (2) is provided in the upper portion of suspension plough head component (1), H beam component (3) and adjustable oil cylinder (6) are installed on rotating arm component (2) and are hinged with rotating arm component (2) on one side, H beam component (3) is hinged with beam component (14) and connecting rod component (7) simultaneously on the other end, adjusting screw rod component (5) is installed in the middle of H beam component (3) and is connected, the other end of adjusting screw rod component (5) is connected with beam component (14), the other end of adjustable oil cylinder (6) is connected with connecting rod component (7), amplitude modulation oil cylinder (8) and amplitude modulation pull rod (9) are connected with the other end portion and middle portion of connecting rod component (7) respectively, the other end of amplitude modulation oil cylinder (8) is hinged with beam component (14), the other end of amplitude modulation pull rod (9) is hinged with amplitude modulation connecting rod component (10) and overload protection plough body component (4) simultaneously, the overload protection plough body component (4) is hinged on amplitude modulation connecting rod component (10) and is hinged with beam component (14) simultaneously, accumulator component (15) is fixedly installed in the rear portion of beam component (14), and accumulator component (15) is connected with overload protection plough body component (4) by hydraulic oil pipe; When the amplitude modulation oil cylinder (8) is stretched or shortened, the shape of the parallelogram structure formed by the rotating arm component (2), the H beam component (3), the adjustable oil cylinder (6), and the connecting rod component (7) changes, the included angle between the beam component (14) and the forward direction changes accordingly, and the positions of the left and right plows of the plow also change accordingly.

2. The turnover plough with hydraulic overload protection and hydraulic amplitude modulation device according to claim 1, characterized in that, The overload protection plough body component (4) includes a plough body support component (401), a plough column mounting plate (402), a cylinder push rod (403), an overload protection cylinder (404), a large plough column (405), a plough body (406), a small plough column (407), and a small auxiliary plow (408). The plough body support component (401) is hinged with the beam component (14) and the amplitude modulation connecting rod component (10), respectively. Two plough column mounting plates (402) are hinged in the middle of the plough body support component (401). Cylinder push rods (403) are hinged to the upper and lower portions of the plough body support component (401). An overload protection cylinder (404) is fixed to the rear portion between the two plough column mounting plates (402). The cylinder push rods (403) are arranged at the ends between the two plough column mounting plates (402) and contact the pistons of the overload protection cylinder (404).

3. The turnover plough with hydraulic overload protection and hydraulic amplitude modulation device according to claim 2, characterized in that, Large plough columns (405) are fixed to the upper and lower portions of the rear portion between the two plough column mounting plates (402). Plough bodies (406) are fixed to the other ends of the large plough columns (405). Small plough columns (407) are fixed to the upper and lower portions of the middle portion between the two plough column mounting plates (402). Small auxiliary plows (408) are fixed to the other ends of the small plough columns (407).

4. The turnover plow having hydraulic overload protection and hydraulic amplitude modulation device according to claim 1, characterized in that, The rear middle part of the beam assembly (14) is fixedly provided with a limited-depth wheel mounting plate (13), the limited-depth wheel assembly (12) is hingedly connected to the limited-depth wheel mounting plate (13), the limited-depth wheel pull rod (11) is hingedly connected to the limited-depth wheel assembly (12), and the other end of the limited-depth wheel pull rod (11) is hingedly connected to the amplitude-adjusting connecting rod assembly (10).

5. The turnover plow having hydraulic overload protection and hydraulic amplitude modulation device according to claim 1, characterized in that, The I-beam assembly (3), the beam assembly (14) and the adjusting screw rod assembly (5) form a triangular structure, the position of the first plow is moved to the right when the adjusting screw rod assembly (5) is elongated, and the position of the first plow is moved to the left when the adjusting screw rod assembly (5) is shortened.

6. The turnover plow having hydraulic overload protection and hydraulic amplitude modulation device according to claim 1, characterized in that, The connecting rod assembly (7), the amplitude-adjusting oil cylinder (8) and the beam assembly (14) form a triangular structure, when the output hydraulic oil of the multi-way valve of the tractor controls the elongation or shortening of the amplitude-adjusting oil cylinder (8), the beam assembly (14) and the connecting rod assembly (7) are relatively rotated at the hinge, the amplitude-adjusting pull rod (9) drives the amplitude-adjusting connecting rod assembly (10) to move, and then the overload protection plow body assembly (4) and the limited-depth wheel assembly (12) are simultaneously rotated around the hinge point of the beam assembly (14) and the limited-depth wheel mounting plate (13) fixed to the beam assembly (14), and the included angle between the overload protection plow body assembly (4) and the limited-depth wheel assembly (12) and the beam assembly (14) is changed.

7. The turnover plow having hydraulic overload protection and hydraulic amplitude modulation device according to claim 1, characterized in that, A plurality of overload protection plow body assemblies (4) are hingedly connected to the amplitude-adjusting connecting rod assembly (10), and each overload protection plow body assembly (4) is hingedly connected to the beam assembly (14).

8. The turnover plough with hydraulic overload protection and hydraulic amplitude modulation device according to claim 7, characterised in that, The amplitude-adjusting connecting rod assembly (10) is arranged in parallel with the beam assembly (14). The amplitude-adjusting connecting rod assembly (10) is arranged in parallel with the beam assembly (14).

Images