Large high-efficiency multifunctional intelligent protection hydraulic turnover plough

Abstract

The application discloses a large high-efficiency multifunctional intelligent protection hydraulic turnover plough, which comprises a main beam, a supporting beam, a depth limiting wheel, a plough assembly, the depth limiting wheel is arranged on a depth limiting wheel support, the depth limiting wheel support is hingedly connected to one end of a connecting beam A, the other end of the connecting beam A is fixedly connected to one end of the supporting beam, a supporting oil cylinder is arranged between a supporting plate and the connecting beam A, the plough assembly comprises a main beam connecting plate, a plough body and a plough column clamping plate fixed on the main beam connecting plate, the main beam connecting plate is fixed on the main beam, the plough body is fixed on a plough column, the plough column is hingedly connected to the plough column clamping plate, a connecting rod A and a connecting rod B on the plough column clamping plate are further arranged, an overload protection oil cylinder is hingedly connected between free ends of the connecting rod A and the connecting rod B, the overload protection oil cylinder can rotate the connecting rod A and the connecting rod B outward when the overload protection oil cylinder is elongated, supporting points C and C1 are arranged on the connecting rod A and the connecting rod B, and the overload protection oil cylinder is pressed on the connecting rod A and the connecting rod B through the supporting points C and C1 when the overload protection oil cylinder is elongated, so that the plough column A and the plough column B are limited to swing.

Description

Technical Field

[0001] This invention belongs to the field of agricultural machinery and relates to a reversible plow, specifically a large-scale, high-efficiency, multi-functional, intelligent protection hydraulic reversible plow. Background Technology

[0002] With the market share of tractors with 250 horsepower and above increasing year by year, the demand for large hydraulic reversible plows (6 furrows and above) is increasing. Current large reversible plows have the following problems:

[0003] (1) The machine is large in size, the efficiency of turning direction at the edge of the field is low, and the turning radius is large, which affects the work efficiency.

[0004] (2) Large reversible plows, especially those with 6 or more furrows, are heavy and inconvenient to reverse. They are equipped with multiple sets of tires for depth control, transportation and reversing.

[0005] (3) Due to the unstable soil resistance during plowing, the soil contains some hard objects such as stones and tree roots, and the soil has become increasingly hard in recent years, instantaneous impact loads are generated during plowing, causing damage and breakage of plow tools.

[0006] Therefore, a large hydraulic reversible plow with more than 6 furrows is proposed. This reversible plow has the advantages of high operating efficiency, high overall reliability, and automatic overload protection. Summary of the Invention

[0007] The technical problem to be solved by the present invention is to provide a large reversible plow, which has the advantages of small turning radius and automatic obstacle avoidance.

[0008] To achieve the above objectives, the present invention provides the following technical solution:

[0009] A large, high-efficiency, multi-functional intelligent protective hydraulic reversible plow, characterized in that it includes a suspension frame 13, a main beam 6, a support beam 8, a plow assembly, and a depth-limiting wheel 1. A connecting mechanism, an amplitude-adjusting cylinder 14, and a reversing cylinder 11 are provided between the suspension frame 13 and the main beam 6. The depth-limiting wheel 1 is mounted on a depth-limiting wheel bracket 2, which is hinged to one end of a connecting beam A19. The other end of the connecting beam A19 is fixedly connected to one end of the support beam 8, and the other end of the support beam 8 is hinged to the suspension frame 13. The connecting beam A19 is L-shaped and hinged to a support plate 5. A support cylinder 4 is provided between the support plate 5 and the connecting beam A19. The hinge point between the support cylinder 4 and the connecting beam A19 is located on the other side of the hinge point of the connecting beam A19 on the support plate 5. A depth-limiting wheel connecting plate 7 is fixed on the main beam 6, and the support plate 5 is hinged to the depth-limiting wheel connecting plate 7. The plow assembly includes a main beam connecting plate 15, a plow body 3, and a plow column clamping plate 20 fixed on the main beam connecting plate 15. The main beam connecting plate 15 is fixed on the main beam 6. The plow body 3 includes a plow body A3-1 and a plow body B3-2. The plow body A3-1 is fixed on the plow column A3-3. Column A3-3 is hinged to the plowstock clamp plate 20. The plow body B3-2 is fixed to the plowstock B3-4, which is also hinged to the plowstock clamp plate 20. Connecting rods A3-5 and B3-6 are also provided. One end of connecting rod A3-5 is hinged to the plowstock clamp plate 20, and the other end is free. One end of connecting rod B3-6 is hinged to the plowstock clamp plate 20, and the other end is free. An overload protection cylinder 3-7 is hinged between the free ends of connecting rods A3-5 and B3-6. The plowstock clamp plate 20 is provided with support points E and E1. Support point E and support point E1 are respectively located on the outer sides of connecting rod A3-5 and connecting rod B3-6. When the plow body encounters an obstacle and lifts up first, it forces the overload protection cylinder 3-7 to shorten. Support point E and support point E1 can limit the outward swing of connecting rod A3-5 and connecting rod B3-6, limiting the maximum rotation amplitude of the connecting rod. Support point C and support point C1 are provided on connecting rod A3-5 and connecting rod B3-6. When the overload protection cylinder 3-7 extends, it presses against connecting rod A3-5 and connecting rod B3-6 through support point C and support point C1, limiting the swing of plow column A3-3 and plow column B3-4.

[0010] The tilting cylinder is provided in two sets and also includes a tilting hinge seat. One end of the tilting cylinder is fixed to both ends of the tilting cylinder hinge seat, and the other end of the tilting cylinder is fixed to the same position on the main beam. The two tilting cylinders are arranged in a V-shape.

[0011] The middle part of the connecting beam A19 is hinged to the support plate 5, and the hinge shaft of the support cylinder 4 is connected to the corner of the connecting beam A19.

[0012] The hinge point between the plowshare A3-3 and the plowshare clamp 20 is support point B1, and the hinge point between the plowshare B3-4 and the plowshare clamp 20 is support point B.

[0013] A pulley is provided at the support point C1, which presses against the plow column A3-3. A pulley is also provided at the support point C, which presses against the plow column B3-4.

[0014] This invention also discloses a reversible plow with a small turning radius, comprising at least a suspension frame 13, a main beam 6, a support beam 8, and a depth-limiting wheel 1. A connecting mechanism, an amplitude-adjusting cylinder 14, and a reversing cylinder 11 are provided between the suspension frame 13 and the main beam 6. The depth-limiting wheel 1 is mounted on a depth-limiting wheel bracket 2, which is hinged to one end of a connecting beam A19. The other end of the connecting beam A19 is fixedly connected to one end of the support beam 8, and the other end of the support beam 8 is hinged to the suspension frame 13. The connecting beam A19 is L-shaped and hinged to a support plate 5. A support cylinder 4 is provided between the support plate 5 and the connecting beam A19. The hinge point between the support cylinder 4 and the connecting beam A19 is located on the other side of the hinged portion of the connecting beam A19 on the support plate 5. A depth-limiting wheel connecting plate 7 is fixed to the main beam 6, and the support plate 5 is hinged to the depth-limiting wheel connecting plate 7.

[0015] The plow body 3 is mounted on the main beam 6.

[0016] The middle part of the connecting beam A19 is hinged to the support plate 5, and the hinge shaft of the support cylinder 4 is connected to the corner of the connecting beam A19.

[0017] This invention also discloses a reversible plow with short-distance obstacle avoidance contouring, characterized in that it includes a main beam connecting plate 15, a plow body 3, and a plow column clamping plate 20 fixed on the main beam connecting plate 15, wherein the plow body 3 comprises plow body A3-1 and plow body B3-2.

[0018] The plow body A3-1 is fixed on the plow column A3-3, and the plow column A3-3 is hinged to the plow column clamp 20. The hinge point is the support point B1.

[0019] The plow body B3-2 is fixed on the plow column B3-4, and the plow column B3-4 is hinged on the plow column clamping plate 20. The hinge point is the support point B.

[0020] It also includes connecting rods A3-5 and B3-6.

[0021] One end of the connecting rod A3-5 is hinged to the plowstock clamp plate 20, with the hinge point being the support point A1, and the other end is a free end.

[0022] One end of the connecting rod B3-6 is hinged to the plowstock clamp plate 20, with the hinge point being support point A, and the other end is a free end.

[0023] An overload protection cylinder 3-7 is hinged between the free end of connecting rod A3-5 and the free end of connecting rod B3-6.

[0024] The plowshare clamp 20 is provided with support points E and E1, which are respectively located on the outer sides of connecting rods A3-5 and B3-6. When the plow body encounters an obstacle and tilts upwards, the overload protection cylinder 3-7 is compressed to shorten it. Support points E and E1 can limit the outward swinging of connecting rods A3-5 and B3-6, thereby limiting the maximum rotation amplitude of the connecting rods.

[0025] The connecting rods A3-5 and B3-6 are provided with support points C and C1. When the overload protection cylinder 3-7 extends, it presses against the connecting rods A3-5 and B3-6 through support points C and C1, thus restricting the swing of the plow column A3-3 and plow column B3-4.

[0026] The hinge point between the plowshare A3-3 and the plowshare clamp 20 is support point B1, and the hinge point between the plowshare B3-4 and the plowshare clamp 20 is support point B.

[0027] A pulley is provided at the support point C1, which presses against the plow column A3-3. A pulley is also provided at the support point C, which presses against the plow column B3-4.

[0028] The overload protection process of the plow body is as follows: When the plowing resistance of the plow body 3-2 is overloaded, the plow body 3-2 rotates counterclockwise around point B. At this time, the pulley at the support point C slides upward along the outside of the plow column 3-4, driving the connecting rod 3-6 to rotate counterclockwise around point A, compressing the overload protection cylinder 3-7. The accumulator increases the oil pressure in the cylinder, and the force of the cylinder increases. After passing the obstacle, the accumulator releases the oil pressure, and the pressure of the overload protection cylinder gradually returns from the maximum value to the working value. The overload protection cylinder extends, the connecting rod 3-6 rotates clockwise, and the plow column 3-4 and the plow body 3-2 return to the working state clockwise.

[0029] Compared with the prior art, the present invention has the following advantages:

[0030] 1. The depth-limiting wheel of the reversible plow disclosed in this invention can achieve the purpose of three uses in one wheel, namely, transportation state, depth-limiting state, and reversible support state.

[0031] 2. The reversible plow disclosed in this invention, by setting depth-limiting wheels, can reduce the turning radius at the edge of the field and improve the turning efficiency during operation. This is mainly because the tires adopt a universal wheel structure, which greatly reduces the turning radius. At the same time, there are multiple ways to turn around at the edge of the field: one is to turn around forward, and the other is to turn around by reversing and then moving forward.

[0032] 3. The reversible plow disclosed in this invention can reduce the uncultivated area at the edge of the field caused by the machine turning around. Existing plows have a large turning radius, resulting in a large uncultivated area left at the edge of the field. Each plowing cycle cannot reach the edge of the field and also leaves a certain length for turning around. In particular, the existing reversible plows with 6 or more furrows have a large turning radius due to their tire structure.

[0033] 4. The reversible plow disclosed in this invention has an automatic overload prevention and obstacle avoidance function without stopping the machine. Compared with other mechanisms, it solves the problem of large lateral swaying of the plow body due to lateral force caused by the long obstacle avoidance lever arm by reducing the obstacle avoidance lever arm. Furthermore, the overload prevention force is set by hydraulic means, which is easy to adjust.

[0034] 5. The reversible plow disclosed in this invention improves the reliability of the implement during reversal by setting a double hydraulic cylinder reversing mechanism.

[0035] 6. The tilting plow disclosed in this invention uses a hydraulic pressure-controlled sequential action circuit to complete the sequential actions of the amplitude-adjusting cylinder and the tilting cylinder in one step via a reversing valve handle. The sequence consists of three parts: first, the amplitude-adjusting cylinder retracts; second, the plow tilts; and third, after tilting to the correct position, the amplitude-adjusting cylinder extends. The sequential actions are regulated by the pressure of the sequence valve. A flow divider valve is provided to improve the accuracy of the two synchronous actions. Attached Figure Description

[0036] Figure 1 This is a schematic diagram of the three-dimensional structure of the present invention (I).

[0037] Figure 2 This is a schematic diagram of the three-dimensional structure of the present invention, II.

[0038] Figure 3 This is a schematic diagram of the main structure of the present invention.

[0039] Figure 4 This is a top view of the structure of the present invention.

[0040] Figure 5 This is a schematic diagram of the walking state structure of the present invention.

[0041] Figure 6 This is a schematic diagram of the depth-limiting wheel structure of the present invention.

[0042] Figure 7 This is a schematic diagram (I) of the overload protection structure for the plow body of the present invention.

[0043] Figure 8 This is a schematic diagram (II) of the overload protection structure for the plow body of the present invention.

[0044] Figure 9 This is a schematic diagram of the tilting cylinder structure of the present invention.

[0045] Figure 10 This is a schematic diagram of the invention turning around on the spot during operation.

[0046] Figure 11 This is a schematic diagram (I) of turning and making a U-turn during operation of the present invention.

[0047] Figure 12 This is a schematic diagram (II) of turning and making a U-turn during operation of the present invention.

[0048] Figure 13 This is a schematic diagram of the hydraulic control system of the present invention.

[0049] In the diagram: 1 is the depth limiting wheel, 2 is the depth limiting wheel bracket, 3 is the plow body, 3-1 is plow body A, 3-2 is plow body B, 3-3 is plow column A, 3-4 is plow column B, 3-5 is connecting rod A, 3-6 is connecting rod B, 3-7 is the overload protection cylinder, 4 is the support cylinder, 5 is the support plate, 6 is the main beam, 7 is the depth limiting wheel connecting plate, 8 is the support beam, 9 is the plow column connecting plate, 10 is the connecting block, 11 is the tilting cylinder, 12 is the traction line adjusting screw, 13 is the suspension frame, 14 is the amplitude adjusting cylinder, 15 is the main beam connecting plate, 16 is the overload protection device, 17 is the connecting frame, 18 is the hinge shaft, 19 is the connecting beam A, and 20 is the plow column clamping plate. Detailed Implementation

[0050] The following embodiments further illustrate the above-described content of the present invention in detail. Obviously, the described embodiments are merely a part of the embodiments of the present invention, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of the present invention without creative effort are within the scope of protection of the present invention.

[0051] Example 1: Refer to Figures 1-13This is a schematic diagram of the structure of Embodiment 1 of the present invention. This embodiment discloses a large-scale, high-efficiency, multi-functional intelligent protective hydraulic reversible plow, characterized in that it includes a suspension frame 13, a main beam 6, a support beam 8, a plow assembly, and a depth-limiting wheel 1. A connecting mechanism, an amplitude-adjusting cylinder 14, and a reversing cylinder 11 are provided between the suspension frame 13 and the main beam 6. The depth-limiting wheel 1 is mounted on a depth-limiting wheel bracket 2. The depth-limiting wheel bracket 2 is hinged to one end of a connecting beam A19. The other end of the connecting beam A19 is fixedly connected to one end of the support beam 8. The other end of the support beam 8 is hinged to the suspension frame 13. The connecting beam A19 is in the shape of an "L". The plow assembly comprises a main beam 6, a connecting beam A19 hinged to a support plate 5, a support cylinder 4 between the support plate 5 and the connecting beam A19, and the hinge point between the support cylinder 4 and the connecting beam A19 located on the other side of the hinge point of the connecting beam A19 on the support plate 5. A depth-limiting wheel connecting plate 7 is fixed on the main beam 6, and the support plate 5 is hinged to the depth-limiting wheel connecting plate 7. The plow assembly includes a main beam connecting plate 15, a plow body 3, and a plow column clamping plate 20 fixed on the main beam connecting plate 15. The main beam connecting plate 15 is fixed on the main beam 6. The plow body 3 includes a plow body A3-1 and a plow body B3-2. The plow body A3-1 is fixed to the plow column clamping plate 20. On column A3-3, plow column A3-3 is hinged to plow column clamp plate 20. The plow body B3-2 is fixed to plow column B3-4, and plow column B3-4 is hinged to plow column clamp plate 20. Connecting rods A3-5 and B3-6 are also provided. One end of connecting rod A3-5 is hinged to plow column clamp plate 20, and the other end is free. One end of connecting rod B3-6 is hinged to plow column clamp plate 20, and the other end is free. An overload protection cylinder 3-7 is hinged between the free ends of connecting rods A3-5 and B3-6. The plow column clamp plate 20 is provided with support points E and E1. Support points E and E1 are respectively located on the outer sides of connecting rods A3-5 and B3-6. When the plow body encounters an obstacle and overturns, it drives the connecting rods to swing, forcing the overload protection cylinder 3-7 to shorten. Support points E and E1 can limit the outward swing of connecting rods A3-5 and B3-6, limiting the maximum rotation amplitude of the connecting rods. Support points C and C1 are provided on connecting rods A3-5 and B3-6. When the overload protection cylinder 3-7 extends, it presses against connecting rods A3-5 and B3-6 through support points C and C1, limiting the swing of plow columns A3-3 and B3-4.

[0052] The tilting cylinder is provided in two sets and also includes a tilting hinge seat. One end of the tilting cylinder is fixed to both ends of the tilting cylinder hinge seat, and the other end of the tilting cylinder is fixed to the same position on the main beam. The two tilting cylinders are arranged in a V-shape.

[0053] The middle part of the connecting beam A19 is hinged to the support plate 5, and the hinge shaft of the support cylinder 4 is connected to the corner of the connecting beam A19.

[0054] The hinge point between the plowshare A3-3 and the plowshare clamp 20 is support point B1, and the hinge point between the plowshare B3-4 and the plowshare clamp 20 is support point B.

[0055] A pulley is provided at the support point C1, which presses against the plow column A3-3. A pulley is also provided at the support point C, which presses against the plow column B3-4.

[0056] This invention also discloses a reversible plow with a small turning radius, comprising at least a suspension frame 13, a main beam 6, a support beam 8, and a depth-limiting wheel 1. A connecting mechanism, an amplitude-adjusting cylinder 14, and a reversing cylinder 11 are provided between the suspension frame 13 and the main beam 6. The depth-limiting wheel 1 is mounted on a depth-limiting wheel bracket 2, which is hinged to one end of a connecting beam A19. The other end of the connecting beam A19 is fixedly connected to one end of the support beam 8, and the other end of the support beam 8 is hinged to the suspension frame 13. The connecting beam A19 is L-shaped and hinged to a support plate 5. A support cylinder 4 is provided between the support plate 5 and the connecting beam A19. The hinge point between the support cylinder 4 and the connecting beam A19 is located on the other side of the hinged portion of the connecting beam A19 on the support plate 5. A depth-limiting wheel connecting plate 7 is fixed to the main beam 6, and the support plate 5 is hinged to the depth-limiting wheel connecting plate 7.

[0057] The plow body 3 is mounted on the main beam 6.

[0058] The middle part of the connecting beam A19 is hinged to the support plate 5, and the hinge shaft of the support cylinder 4 is connected to the corner of the connecting beam A19.

[0059] This invention also discloses a reversible plow with short-distance obstacle avoidance contouring, characterized in that it includes a main beam connecting plate 15, a plow body 3, and a plow column clamping plate 20 fixed on the main beam connecting plate 15, wherein the plow body 3 comprises plow body A3-1 and plow body B3-2.

[0060] The plow body A3-1 is fixed on the plow column A3-3, and the plow column A3-3 is hinged to the plow column clamp 20. The hinge point is the support point B1.

[0061] The plow body B3-2 is fixed on the plow column B3-4, and the plow column B3-4 is hinged on the plow column clamping plate 20. The hinge point is the support point B.

[0062] It also includes connecting rods A3-5 and B3-6.

[0063] One end of the connecting rod A3-5 is hinged to the plowstock clamp plate 20, with the hinge point being the support point A1, and the other end is a free end.

[0064] One end of the connecting rod B3-6 is hinged to the plowstock clamp plate 20, with the hinge point being support point A, and the other end is a free end.

[0065] An overload protection cylinder 3-7 is hinged between the free end of connecting rod A3-5 and the free end of connecting rod B3-6.

[0066] The plowshare clamp 20 is provided with support points E and E1, which are respectively located on the outer sides of connecting rods A3-5 and B3-6. When the plow encounters an obstacle and causes the plowshare to tilt, it will compress the overload protection cylinder 3-7, forcing it to shorten. At this time, support points E and E1 can limit the outward swing of connecting rods A3-5 and B3-6, thereby limiting the maximum rotation amplitude of the connecting rods. When the obstacle disappears, the plow continues to rotate under the action of the overload protection cylinder. The overload protection cylinder is normally in the extended state.

[0067] The connecting rods A3-5 and B3-6 are provided with support points C and C1. When the overload protection cylinder 3-7 extends, it presses against the connecting rods A3-5 and B3-6 through support points C and C1, thus restricting the swing of the plow column A3-3 and plow column B3-4.

[0068] The hinge point between the plowshare A3-3 and the plowshare clamp 20 is support point B1, and the hinge point between the plowshare B3-4 and the plowshare clamp 20 is support point B.

[0069] A pulley is provided at the support point C1, which presses against the plow column A3-3. A pulley is also provided at the support point C, which presses against the plow column B3-4.

[0070] A hinge seat for the tilting cylinder is provided on the suspension frame 13. The upper hinge seats of the two tilting cylinders 11 are symmetrically positioned. When the plow body A is working, it is in position A. When the plow body B is working, it is in position C. When tilting, the center point is in position B, at which time both tilting cylinders 11 are at their shortest stroke.

[0071] The front end of the main beam 6 is connected to the suspension frame 13 via the tilting cylinder 11 and the tilting connecting block. The main beam 6 is equipped with an amplitude adjustment cylinder, which can change the deflection angle of the main beam. The main beam 6 is equipped with 6 to 8 sets of plow body overload protection units. The rear end of the main beam 6 is connected to the depth limiting wheel 1 assembly.

[0072] The main beam 6 is connected to the depth-limiting wheel connecting plate 7. A tilting arm is provided on the depth-limiting wheel connecting plate 7. One end of the tilting arm is connected to the depth-limiting wheel connecting plate 7 by bolts. The other end of the tilting arm is provided with a hinge hole. The hinge hole of the tilting arm is connected to the hinge hole of the support plate 5. The support plate 5 is provided with two symmetrical plates on the left and right. The two support plates 5 are connected by welding. A gap is reserved in the middle of the two support plates 5 for installing the support cylinder 4 and the support beam 8. The upper left end of the support plate 5 is provided with a hinge point for the support cylinder 4. The support cylinder 4 is installed. The support beam 8 passes through the gap between the two support plates. The support beam 8 is provided with a lower hinge point for the support cylinder 4 for installing the support cylinder 4. The rear end of the support beam 8 is provided with a ground wheel universal shaft hinge hole. A bearing is provided in the hole, and the ground wheel universal shaft is installed. The universal shaft is welded to the ground wheel bracket. The ground wheel is installed on the ground wheel bracket.

[0073] By supporting the movement of the hydraulic cylinder 4, the height of the main beam 6 and the plow body can be adjusted. Through the universal joint, the ground wheel can achieve universal rotation.

[0074] The front end of the support beam is connected to the bottom end of the suspension frame 13, and the rear end of the support beam is connected to the ground wheel and is equipped with a hinge point for the support cylinder 4.

[0075] The support beam frame consists of a support beam and a connecting beam A.

[0076] The plow body overload protection unit is symmetrically arranged vertically. The plow column connecting plate is fixedly installed on the main beam 6, and the plow column clamping plate is fixedly installed on the plow column connecting plate. The plow column connecting plate is sequentially provided with connecting rod hinge hole A, plow column hinge hole B, and plow column front end limiting bolt E. A connecting rod is hinged at connecting rod hinge hole A, and the middle section of the connecting rod has an arc-shaped recess for installing the limiting bolt E. The other end of the connecting rod is provided with a rotating shaft hinge point C, on which a rotating bearing is installed. The end of the connecting rod is provided with an overload protection cylinder hinge hole. The plow column is hinged at the connecting rod plow column hinge hole, and the plow body is installed at the other end of the plow column. When the plow column is installed, the rear end face of the plow column is in line contact with the rotating bearing for limiting, and the front end face of the plow column is limited by the limiting bolt E.

[0077] This structure ensures that the two connecting rods can only rotate in opposite directions. Overload protection and automatic obstacle avoidance process: When the plow encounters a hard object that increases resistance, the plow body drives the plowstock to rotate clockwise. At this time, the rotating bearing limits the rotation, causing the connecting rods to rotate counterclockwise. Meanwhile, the upper plow body, plowstock, and connecting rods remain in their positions due to the limiting effect, thus compressing the hydraulic cylinder and achieving the overload protection function. After overcoming the obstacle, the overload protection hydraulic cylinder releases energy from the accumulator, pressing the plow body into the soil to continue working, without stopping the machine throughout the entire process.

[0078] This structure is compact, with a small lever arm and minimal lateral sway, reducing instability caused by lateral forces on the plow body. To ensure reliable and stable structure, the limiting angle between the cylinder and the connecting rod must be less than 180 degrees.

[0079] Depth-limiting wheels have three functions: depth limitation, transportation, and support for rotation.

[0080] By using a depth-limiting wheel structure design, the turning radius can be reduced, while increasing the turning operation method, thus achieving a smaller headway and a smaller turning radius.

[0081] Example 2: Refer to Figure 6 This is a schematic diagram of the structure of Embodiment 2 of the present invention. This embodiment discloses a reversible plow with a small turning radius, which includes at least a suspension frame 13, a main beam 6, a support beam 8, and a depth limiting wheel 1. A connecting mechanism, an amplitude adjustment cylinder 14, and a reversing cylinder 11 are provided between the suspension frame 13 and the main beam 6. The depth limiting wheel 1 is mounted on a depth limiting wheel bracket 2. The depth limiting wheel bracket 2 is hinged to one end of a connecting beam A19. The other end of the connecting beam A19 is fixedly connected to one end of the support beam 8. The other end of the support beam 8 is hinged to the suspension frame 13. The connecting beam A19 is L-shaped and is hinged to a support plate 5. A support cylinder 4 is provided between the support plate 5 and the connecting beam A19. The hinge point between the support cylinder 4 and the connecting beam A19 is located on the other side of the hinge part of the connecting beam A19 on the support plate 5. A depth limiting wheel connecting plate 7 is fixed on the main beam 6, and the support plate 5 is hinged to the depth limiting wheel connecting plate 7.

[0082] The plow body 3 is mounted on the main beam 6.

[0083] The middle part of the connecting beam A19 is hinged to the support plate 5, and the hinge shaft of the support cylinder 4 is connected to the corner of the connecting beam A19.

[0084] Example 3: Reference Figures 7-8 This is a schematic diagram of the structure of Embodiment 2 of the present invention. This embodiment discloses a reversible plow with short-distance obstacle avoidance contouring, characterized in that it includes a main beam connecting plate 15, a plow body 3, and a plow column clamping plate 20 fixed on the main beam connecting plate 15. The plow body 3 includes plow body A3-1 and plow body B3-2.

[0085] The plow body A3-1 is fixed to the plow column A3-3, and the plow column A3-3 is hinged to the plow column clamping plate 20.

[0086] The plow body B3-2 is fixed to the plow column B3-4, and the plow column B3-4 is hinged to the plow column clamping plate 20.

[0087] It also includes connecting rods A3-5 and B3-6.

[0088] One end of the connecting rod A3-5 is hinged to the plowstock clamp plate 20, and the other end is a free end.

[0089] One end of the connecting rod B3-6 is hinged to the plowstock clamp plate 20, and the other end is a free end.

[0090] An overload protection cylinder 3-7 is hinged between the free end of connecting rod A3-5 and the free end of connecting rod B3-6.

[0091] The plowstock clamp plate 20 is provided with support points E and E1, which are respectively located on the outer sides of connecting rod A3-5 and connecting rod B3-6. When the overload protection cylinder 3-7 is shortened due to obstacle avoidance, support points E and E1 can limit the outward rotation of connecting rod A3-5 and connecting rod B3-6.

[0092] The connecting rods A3-5 and B3-6 are provided with support points C and C1. When the overload protection cylinder 3-7 extends, it presses against the connecting rods A3-5 and B3-6 through support points C and C1, thus restricting the swing of the plow column A3-3 and plow column B3-4.

[0093] The hinge point between the plowshare A3-3 and the plowshare clamp 20 is support point B1, and the hinge point between the plowshare B3-4 and the plowshare clamp 20 is support point B.

[0094] A pulley is provided at the support point C1, which presses against the plow column A3-3. A pulley is also provided at the support point C, which presses against the plow column B3-4.

[0095] In actual use: When the plow body B3-2 is in working state, it will tilt backward when it encounters an obstacle. The plow column B3-4 will swing backward, causing the connecting rod B to swing upward and squeeze the overload protection cylinder 3-7. The connecting rod A3-5 is restricted from swinging upward under the action of the support point B1. When it encounters an obstacle, it will automatically avoid the obstacle by shortening and extending the overload protection cylinder 3-7.

Claims

1. A large-scale, high-efficiency, multi-functional intelligent protective hydraulic reversible plow, characterized in that: The system includes a suspension frame (13), a main beam (6), a support beam (8), a plow assembly, and a depth-limiting wheel (1). A connecting mechanism, an amplitude-adjusting cylinder (14), and a tilting cylinder (11) are provided between the suspension frame (13) and the main beam (6). The depth-limiting wheel (1) is mounted on a depth-limiting wheel bracket (2), which is hinged to one end of a connecting beam A (19). The other end of the connecting beam A (19) is fixedly connected to one end of the support beam (8), and the other end of the support beam (8) is hinged to the suspension frame (13). The connecting beam A (19) is L-shaped and hinged to a support plate (5). The support plate (5) and the connecting beam A (19) are connected... A support cylinder (4) is provided between the main beam (6) and the connecting beam A (19). The hinge point of the support cylinder (4) and the connecting beam A (19) is located on the other side of the hinge part of the connecting beam A (19) on the support plate (5). A depth-limiting wheel connecting plate (7) is fixed on the main beam (6). The support plate (5) is hinged to the depth-limiting wheel connecting plate (7). The plow assembly includes a main beam connecting plate (15), a plow body (3), and a plow column clamping plate (20) fixed on the main beam connecting plate (15). The main beam connecting plate (15) is fixed on the main beam (6). The plow body (3) includes a plow body A (3-1) and a plow body B (3-2). The plow body A (3-1) is fixed on the plow column A (3-3). A (3-3) is hinged to the plowstock clamp plate (20). The plow body B (3-2) is fixed to the plowstock B (3-4). The plowstock B (3-4) is hinged to the plowstock clamp plate (20). There are also connecting rods A (3-5) and B (3-6). One end of the connecting rod A (3-5) is hinged to the plowstock clamp plate (20), and the other end is a free end. One end of the connecting rod B (3-6) is hinged to the plowstock clamp plate (20), and the other end is a free end. An overload protection cylinder (3-7) is hinged between the free end of the connecting rod A (3-5) and the free end of the connecting rod B (3-6). The plowstock clamp plate (20) is provided with support point E and support point E1. The support points E and E1 are respectively located on the outer sides of connecting rod A (3-5) and connecting rod B (3-6). When the plow body encounters an obstacle and lifts up first, it forces the overload protection cylinder (3-7) to shorten. The support points E and E1 can limit the connecting rods A (3-5) and B (3-6) from continuing to swing outward, limiting the maximum rotation amplitude of the connecting rods. The connecting rods A (3-5) and B (3-6) are provided with support points C and C1. When the overload protection cylinder (3-7) extends, it presses against the connecting rods A (3-5) and B (3-6) through support points C and C1, limiting the swing of the plow column A (3-3) and plow column B (3-4).

2. The large-scale, high-efficiency, multi-functional, intelligent protective hydraulic reversible plow as described in claim 1, characterized in that: The middle part of the connecting beam A (19) is hinged to the support plate (5), and the hinge shaft of the support cylinder (4) is connected to the corner of the connecting beam A (19).

3. The large-scale, high-efficiency, multi-functional, intelligent protective hydraulic reversible plow as described in claim 1, characterized in that: The hinge point between the plowstock A (3-3) and the plowstock clamp (20) is the support point B1, and the hinge point between the plowstock B (3-4) and the plowstock clamp (20) is the support point B.

4. The large-scale, high-efficiency, multi-functional, intelligent protective hydraulic reversible plow as described in claim 1, characterized in that: A pulley is provided at support point C1, which presses against the plow column A (3-3). A pulley is provided at support point C, which presses against the plow column B (3-4).

Images