Bidirectional obstacle avoidance overload protection device for turnover plow

Abstract

The invention relates to the technical field of turnover ploughs, in particular to a bidirectional obstacle avoidance overload protection device for a turnover plow, which comprises a plow body support assembly, a double-shaft bearing seat and an overload protection oil cylinder, plow column clamping plates are arranged on the left side and the right side of the plow body support assembly, the overload protection oil cylinder is mounted between the plow column clamping plates, one side of a main plow body is a soil turning side, and the other side of the main plow body is a soil turning side. The upper end and the lower end of the plow body support assembly are connected with oil cylinder push rods respectively, a longitudinal rotating shaft and a transverse rotating shaft are installed in the double-shaft bearing seat, the double-shaft bearing seat is rotationally connected with the plow body support assembly through the longitudinal rotating shaft, plow column clamping plates are installed at the two ends of the transverse rotating shaft, and the oil cylinder push rods are installed on the plow body support assembly through joint bearings. The axis of the longitudinal rotating shaft deviates to the soil turning side of the main plough body relative to the plane formed by the axes of the two oil cylinder push rods, and a limiting pin is further arranged between the plough body support assembly and the double-shaft bearing seat. And when an obstacle is overloaded, the turnover plow can horizontally shift to cross the obstacle while being lifted upwards, so that overload protection is carried out.

Description

Technical Field

[0001] The invention relates to the technical field of a reversible plough, and in particular to a bidirectional obstacle avoidance overload protection device for a reversible plough. Background Art

[0002] Hydraulic reversible plows are commonly used in tillage machinery. During tillage operations, there may be obstacles such as stones, tree roots or hard spots in the tillage layer, so an overload protection device needs to be installed on the reversible plow. The overload protection device of a traditional reversible plow generally achieves overload protection through a safety bolt. When overloaded, the safety bolt is cut off. At this time, the machine needs to be shut down and the complete safety bolt needs to be replaced before it can continue to work, which is time-consuming and affects work efficiency. However, the reversible plows currently on the market that use hydraulic overload protection can only be lifted up to avoid obstacles after an overload in the vertical direction, and the obstacle avoidance effect is poor. Summary of the invention

[0003] In view of the problem that the hydraulic overload protection device currently used in the reversible plow has a single obstacle avoidance direction, the present invention proposes a bidirectional obstacle avoidance overload protection device for the reversible plow, which realizes bidirectional obstacle avoidance in the vertical direction and the horizontal direction. The specific technical solution is as follows: A two-way obstacle avoidance overload protection device for a flip plow comprises a plow body support assembly, a double-axis bearing seat and an overload protection oil cylinder arranged at the rear side of the plow body support assembly, a plow column clamping plate is provided on the left and right sides of the plow body support assembly, the overload protection oil cylinder is installed between the plow column clamping plates, a main plow body is arranged on the upper and lower sides of the overload protection oil cylinder, one side of the main plow body is a soil turning side, and cylinder push rods are connected to the upper and lower ends of the plow body support assembly respectively, a longitudinal rotation axis and a transverse rotation axis are arranged in the double-axis bearing seat, the double-axis bearing seat is rotatably connected to the plow body support assembly through the longitudinal rotation axis, the plow column clamping plate is installed at both ends of the transverse rotation axis, the plow column clamping plate is rotatably connected to the double-axis bearing seat through the transverse rotation axis, and the cylinder push rod is installed on the plow body support assembly through a joint bearing; the axis of the longitudinal rotation axis is biased toward the soil turning side of the main plow body relative to the plane formed by the axes of the two cylinder push rods, and a limit pin for limiting the horizontal deflection range of the plow column clamping plate is also provided between the plow body support assembly and the double-axis bearing seat. When the tipping plough is in a horizontal state, the other ends of the two cylinder push rods both abut against the cylinder piston of the overload protection cylinder. When the tipping plough is lifted upward, the cylinder push rod on the lower side is disengaged from the cylinder piston of the overload protection cylinder.

[0004] Furthermore, the dual-axis bearing seat includes a longitudinal axis mounting seat with a longitudinal axis mounting hole and a transverse axis mounting seat with a transverse axis mounting hole, the longitudinal axis mounting hole has a longitudinal axis lubricating oil hole on its side wall, and the transverse axis mounting hole has a transverse axis lubricating oil hole on its side wall.

[0005] Furthermore, the plow body support assembly includes two horizontally arranged panels and two vertically arranged vertical panels. When installed, the flip plow beam is located between the two panels. The panels are provided with connecting holes for connecting with the flip plow beam, longitudinal rotation axis holes for installing the longitudinal rotation axis and several amplitude adjustment holes for adjusting the working width. A stop plate for limiting the rotation of the longitudinal rotation axis is also provided next to the longitudinal rotation axis hole. The vertical panels are provided with large through holes for the transverse axis mounting seat to pass through, and the cylinder push rod is installed between the vertical panels.

[0006] Furthermore, the dual-axis bearing seat also includes a limit pin mounting seat with a limit pin mounting hole, the longitudinal axis mounting seat and the limit pin mounting seat are respectively located on the front and rear sides of the transverse axis mounting seat, and a small through hole for the limit pin to pass through is opened on the vertical plate close to the soil turning side, and the two ends of the limit pin are respectively a threaded end and a countersunk end; after the dual-axis bearing seat is assembled with the plow body bracket, the threaded end of the limit pin is installed in the limit pin mounting seat, and the countersunk end of the limit pin is between the two vertical plates, and the countersunk end of the limit pin and the limit pin mounting seat clamp the vertical plate close to the soil turning side in the middle; when the flip plow is in a horizontal working state, the countersunk end of the limit pin fits with the vertical plate close to the soil turning side for limiting.

[0007] Furthermore, a countersunk gasket is provided between the countersunk end of the limit pin and the vertical plate close to the soil turning side.

[0008] Furthermore, guide plates are provided on the inner walls of the two plow column clamps, and the two guide plates are respectively fitted with the left and right sides of the cylinder push rod. Two guide blocks are also provided between the two guide plates, and the guide blocks are respectively located on the upper and lower sides of the cylinder push rod group composed of two cylinder push rods.

[0009] Furthermore, a piston top block is provided between the cylinder push rod group consisting of two cylinder push rods and the cylinder piston of the overload protection cylinder.

[0010] Furthermore, the longitudinal axis mounting seat and the transverse axis mounting seat are both tubular, and connecting ribs are provided between the longitudinal axis mounting seat and the transverse axis mounting seat.

[0011] Furthermore, a connecting plate for enhancing the structural strength is provided between the two vertical plates, and reinforcing ribs are provided at the connection between the vertical plates and the panel.

[0012] The beneficial effects of the present invention are: When the flip plow using the present invention as an overload protection device encounters an obstacle and is overloaded, the flip plow can be lifted up and horizontally deflected to cross the obstacle to perform overload protection, perform two-way obstacle avoidance, and does not stop due to overload, with good obstacle avoidance effect and obstacle avoidance adaptability. BRIEF DESCRIPTION OF THE DRAWINGS

[0013] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below. Obviously, the drawings described below are only some embodiments of the present invention. For ordinary technicians in this field, other drawings can be obtained based on these drawings without paying creative labor.

[0014] Figure 1 It is a schematic structural diagram of a bidirectional obstacle avoidance and overload protection device for a reversible plow according to the present invention; Figure 2 is a cross-sectional view of a bidirectional obstacle avoidance and overload protection device for a reversible plow according to the present invention; Figure 3 It is a three-dimensional schematic diagram of the plow body support assembly of the present invention; Figure 4 It is a schematic diagram of the plow body support assembly of the present invention. Figure 1 ; Figure 5 It is a schematic diagram of the plow body support assembly of the present invention. Figure 2 ; Figure 6 It is a schematic diagram of the plow body support assembly of the present invention. Figure 3 ; Figure 7 is a three-dimensional schematic diagram of the dual-axis bearing seat of the present invention; Figure 8 is a cross-sectional view of the dual-axis bearing seat of the present invention Figure 1 ; Fig. 9 is a cross-sectional view of the dual-axis bearing seat of the present invention Figure 2 ; Fig.10 is a schematic diagram of a horizontal deflection trajectory in an embodiment; Fig.11 Schematic diagram of the double-axis bearing seat in the overload state in the embodiment; Fig.12 It is a schematic diagram of the dual-axis bearing seat in the embodiment under normal working conditions.

[0015] In the figure: 1. Plough support assembly; 1.1. Panel; 1.11. Connection hole; 1.12. Modulation hole; 1.13. Longitudinal axis hole; 1.2. Vertical plate; 1.21. Small through hole; 1.22. Large through hole; 1.23. Pin hole; 1.3. Connecting plate; 1.4. Stop plate; 1.5. Reinforcement rib; 2. Dual-axis bearing seat; 2.1. Longitudinal axis mounting seat; 2.11. Longitudinal axis mounting hole; 2.12. Longitudinal axis lubricating oil hole; 2.2. Horizontal axis mounting seat; 2.21. Horizontal axis mounting hole; 2.22. Horizontal axis lubricating oil hole Oil hole; 2.3, limit pin mounting seat; 2.31, limit pin mounting hole; 2.4, connecting rib; 3, longitudinal axis; 4, transverse axis; 5, limit pin; 6, countersunk gasket; 7, left plow column clamp; 8, right plow column clamp; 9, cylinder push rod; 10, small plow column clamp; 11, small plow column; 12, small auxiliary plow; 13, large plow column; 14, main plow body; 15, overload protection cylinder; 15.1, cylinder piston; 15.2, piston top block; 16, safety bolt; 17, fixing bolt; 18, guide block; 19, guide plate. DETAILED DESCRIPTION

[0016] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as limiting the present invention. In addition, the terms "first", "second", and the like are only used for descriptive purposes, and cannot be understood as indicating or implying relative importance or implicitly indicating the number of technical features indicated. Thus, features defined as "first", "second", and the like may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0017] Taking the forward direction of the reversible plow as the front side and the right side of the main plow body as the soil turning side as an example, the present invention provides the following specific implementation schemes: like Figure 1-9As shown, the present invention provides a bidirectional obstacle avoidance overload protection device for a reversing plow, comprising a plow body support assembly 1, a dual-axis bearing seat 2 and an overload protection oil cylinder 15 arranged at the rear side of the plow body support assembly 1, and plow column clamps are arranged on the left and right sides of the plow body support assembly 1, namely, a left plow column clamp 7 and a right plow column clamp 8, and the overload protection oil cylinder 15 is fixedly installed between the plow column clamps, and a main plow body 14 is arranged on the upper and lower sides of the overload protection oil cylinder 15, and the main plow body 14 is installed between the plow column clamps through a large plow column 13, one side of the main plow body 14 is a soil turning side, and the upper and lower sides of the plow body support assembly are The two ends are connected with oil cylinder push rods 9 respectively, the longitudinal axis 3 and the transverse axis 4 are installed in the double-axis bearing seat 2, the double-axis bearing seat 2 is rotatably connected with the plow body support assembly 1 through the longitudinal axis 3, the plow column clamp is installed at both ends of the transverse axis 4, the plow column clamp is rotatably connected with the double-axis bearing seat 2 through the transverse axis 4, and the oil cylinder push rod 9 is installed on the plow body support assembly 1 through a joint bearing; the axis of the longitudinal axis 3 is biased toward the soil turning side of the main plow body relative to the plane formed by the axes of the two oil cylinder push rods 9, and a limit pin 5 for limiting the horizontal deflection range of the plow column clamp is also provided between the plow body support assembly 1 and the double-axis bearing seat 2. When the flip plow body is working normally (in a horizontal state), the other ends of the two oil cylinder push rods 9 both abut against the oil cylinder piston 15.1 of the overload protection oil cylinder 15, and when the flip plow body is lifted upward, the oil cylinder push rod 9 located at the lower side and the oil cylinder piston 15.1 of the overload protection oil cylinder 15 are separated.

[0018] Preferably, the dual-axis bearing seat 2 includes a longitudinal axis mounting seat 2.1 with a longitudinal axis mounting hole 2.11 and a transverse axis mounting seat 2.2 with a transverse axis mounting hole 2.21, the longitudinal axis mounting hole 2.11 has a longitudinal axis lubricating oil hole 2.12 on its side wall, and the transverse axis mounting hole 2.21 has a transverse axis lubricating oil hole 2.22 on its side wall.

[0019] Preferably, the plow body support assembly 1 includes two horizontally arranged panels 1.1 and two vertically arranged upright plates 1.2. When installed, the tipping plow beam is located between the two panels 1.1. The panel 1.1 is provided with a connecting hole 1.11 for connecting with the tipping plow beam, a longitudinal axis hole 1.13 for installing the longitudinal axis 3 and a plurality of amplitude adjustment holes 1.12 for adjusting the working width. When the plow body support assembly 1 and the beam are assembled, the amplitude adjustment hole 1.12 to be used is determined according to the required working width. A stop plate 1.4 for limiting the rotation of the longitudinal axis 3 is also provided next to the longitudinal axis hole 1.13. A large through hole 1.22 for the transverse axis mounting seat 2.2 to pass through is provided on the upright plate 1.2. Pin holes 1.23 are also arranged at the upper and lower ends of the vertical plate 1.2. Correspondingly, pins are provided at the upper and lower ends of the vertical plate 1.2. The cylinder push rod 9 is installed between the vertical plates 1.2 through corresponding spherical bearings and pins, wherein the cylinder push rod 9 is fixedly connected to the outer ring of the spherical bearing, and the pin is fixedly connected to the inner ring of the spherical bearing.

[0020] Preferably, the dual-axis bearing seat 2 also includes a limit pin mounting seat 2.3 with a limit pin mounting hole 2.31, the longitudinal axis mounting seat 2.1 and the limit pin mounting seat 2.3 are respectively located on the front and rear sides of the transverse axis mounting seat 2.2, and the vertical plate 1.2 of the two vertical plates closer to the soil turning side (on the right side in this embodiment) is provided with a small through hole 1.21 for the limit pin to pass through, and the two ends of the limit pin 5 are respectively a threaded end and a countersunk end; after the dual-axis bearing seat 2 is assembled with the plow body bracket assembly 1, the threaded end of the limit pin 5 is installed in the limit pin mounting seat 2.3, and the countersunk end of the limit pin 5 is between the two vertical plates 1.2, and the countersunk end of the limit pin 5 and the limit pin mounting seat 2.3 sandwich the vertical plate 1.2 on the right side; when the flip plow is in a horizontal working state, the countersunk end of the limit pin 5 fits with the vertical plate 1.2 on the right side for limiting. The countersunk end of the limit pin 5 can only move away from the right vertical plate 1.2 so that the flip plough body can only deflect to the left. When the countersunk end of the limit pin 5 hits the left vertical plate 1.2, the maximum angle of the flip plough body to deflect to the left is reached.

[0021] Preferably, a countersunk washer 6 for buffering is provided between the countersunk end of the limiting pin and the vertical plate 1.2 of the two vertical plates which is closer to the soil turning side (on the right side in this embodiment).

[0022] Preferably, guide plates 19 are provided on the inner walls of the two plow column clamps, and the two guide plates 19 are respectively fitted with the left and right sides of the cylinder push rod 9, and the guide plates 19 are used to limit the axes of the two cylinder push rods 9 to be in the same vertical plane; two guide blocks 18 are also provided between the two guide plates 19, and the guide blocks 18 are respectively located on the upper and lower sides of the cylinder push rod group composed of two cylinder push rods 9, and the guide blocks 18 are used to ensure the reset of the cylinder push rod 9 located on the lower side after it is separated from the cylinder piston 15.1.

[0023] Preferably, a piston top block 15.2 is further provided between the cylinder push rod group consisting of the two cylinder push rods 9 and the cylinder piston 15.1 of the overload protection cylinder 15, and the piston top block 15.2 plays a buffering role.

[0024] Preferably, the longitudinal axis mounting seat 2.1 and the transverse axis mounting seat 2.2 are both tubular, and a connecting rib 2.4 for enhancing the structural strength is provided between the longitudinal axis mounting seat 2.1 and the transverse axis mounting seat 2.2.

[0025] Preferably, a connecting plate 1.3 for enhancing the structural strength is provided between the two vertical plates 1.2, and reinforcing ribs 1.5 are provided at the connection between the vertical plates 1.2 and the panel 1.1.

[0026] Preferably, the plow body includes a group of main plow bodies 14 and small auxiliary plows 12 located on the upper side and a group of main plow bodies 14 and small auxiliary plows 12 located on the lower side. Small plow post clamps 10 are provided on the upper and lower sides of each plow post clamp, and the small auxiliary plow 12 is installed between the corresponding small plow post clamps 10 through the corresponding small plow posts 11; the main plow bodies 14 are installed between the two plow post clamps through the corresponding large plow posts 13, and the large plow posts 13 are installed between the two plow post clamps through the corresponding fixing bolts 17 and the corresponding safety bolts 16. When the overload limit is reached, the safety bolts 16 are sheared off.

[0027] The overload protection process is as follows: like Fig.10 As shown, when the plow body of the flip plough is not overloaded, if it is to deflect horizontally, the cylinder push rod 9 needs to push the cylinder piston 15.1 to move, and at this time the cylinder piston 15.1 will push it back to keep it in a non-deflected state for normal plowing.

[0028] like Fig.11 As shown, when overloaded, the main plow body 14 touches an obstacle, increasing the resistance on the main plow body 14, and the main plow body 14 drives the large plow column 13, the overload protection cylinder 15, the left plow column clamp 7 and the right plow column clamp 8 to rotate around the transverse axis 4 of the dual-axis bearing seat 2 to lift up (the plowing depth becomes shallower) to avoid obstacles, and the cylinder push rod 9 at the top presses the cylinder piston 15.1 of the overload protection cylinder 15 into the overload protection cylinder 15 through the piston top block 15.2, and the hydraulic oil in the overload protection cylinder 15 enters the accumulator to store energy; at this time, the cylinder push rod 9 at the bottom is disengaged from the piston top block 15.2 in the cylinder piston 15.1 of the overload protection cylinder 15, and this process is lifting up to avoid obstacles and overload protection.

[0029] When lifting up to avoid obstacles, since the cylinder piston 15.1 has been pushed in, under the action of the soil-turning lateral force of the main plow body 14, the main plow body 14 drives the large plow column 13, the overload protection cylinder 15, the left plow column clamp 7, the right plow column clamp 8, the transverse axis 4 and the dual-axis bearing seat 2 to rotate around the longitudinal axis 3 toward the uncultivated land to avoid obstacles. This process is horizontal offset obstacle avoidance overload protection.

[0030] like Fig.12 As shown, after the main plow body 14 passes over the obstacle, the high-pressure hydraulic oil flows back to the overload protection cylinder 15 under the action of the accumulator, and the cylinder piston 15.1 of the overload protection cylinder 15 is pushed back. Driven by the overload protection cylinder 15, the left plow column clamp 7, the right plow column clamp 8, the overload protection cylinder 15, the large plow column 13, and the main plow body 14 rotate in the opposite direction around the transverse axis 4 and fall down, and rotate around the longitudinal axis 3 toward the cultivated land direction to recover, and finally the cylinder push rod 9 below contacts with the piston top block 15.2 of the overload protection cylinder 15 and returns to the normal working position (the plowing depth returns to normal).

[0031] When encountering an obstacle or overload, the flip plow can be lifted upward and horizontally shifted to cross the obstacle to provide overload protection, perform two-way obstacle avoidance, and will not stop in case of overload, with good obstacle avoidance effect and adaptability.

[0032] The above shows and describes the basic principles, main features and advantages of the present invention. Those skilled in the art should understand that the present invention is not limited to the above embodiments, and the above embodiments and descriptions are only for explaining the principles of the present invention. Without departing from the spirit and scope of the present invention, the present invention may have various changes and improvements, and these changes and improvements all fall within the scope of the present invention to be protected.

Claims

1. A bidirectional obstacle avoidance overload protection device for a reversible plow, comprising a plow body support assembly (1) and an overload protection oil cylinder (15) arranged at the rear side of the plow body support assembly (1), plow column clamps are arranged on the left and right sides of the plow body support assembly (1), the overload protection oil cylinder (15) is installed between the plow column clamps, a main plow body (14) is arranged on the upper and lower sides of the overload protection oil cylinder (15), one side of the main plow body (14) is a soil turning side, and the upper and lower ends of the plow body support assembly (1) are respectively connected to a cylinder push rod (9), when the reversible plow is in a horizontal working state, the other end of the cylinder push rod (9) abuts against the cylinder piston (15.1) of the overload protection oil cylinder (15), characterized in that: The utility model also comprises a double-axis bearing seat (2), wherein a longitudinal rotation axis (3) and a transverse rotation axis (4) are installed in the double-axis bearing seat (2), the double-axis bearing seat (2) is rotatably connected to the plow body support assembly (1) via the longitudinal rotation axis (3), a plow column clamp is installed at both ends of the transverse rotation axis (4), the plow column clamp is rotatably connected to the double-axis bearing seat (2) via the transverse rotation axis (4), and a cylinder push rod (9) is installed on the plow body support assembly (1) via a joint bearing; the axis of the longitudinal rotation axis (3) is deflected toward the soil turning side of the main plow body (14) relative to the plane formed by the axes of the two cylinder push rods (9), and a limit pin (5) for limiting the horizontal deflection range of the plow column clamp is also provided between the plow body support assembly (1) and the double-axis bearing seat (2).

2. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 1, characterized in that: The dual-axis bearing seat (2) comprises a longitudinal axis mounting seat (2.1) having a longitudinal axis mounting hole (2.11) and a transverse axis mounting seat (2.2) having a transverse axis mounting hole (2.21). A longitudinal axis lubricating oil hole (2.12) is formed on the side wall of the longitudinal axis mounting hole (2.11), and a transverse axis lubricating oil hole (2.22) is formed on the side wall of the transverse axis mounting hole (2.21).

3. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 2, characterized in that: The plow body support assembly (1) comprises two horizontally arranged panels (1.1) and two vertically arranged upright panels (1.2). When installed, the tilting plow beam is located between the two panels (1.1). The panel (1.1) is provided with a connection hole (1.11) for connecting with the tilting plow beam, a longitudinal rotation axis hole (1.13) for installing the longitudinal rotation axis (3) and a plurality of amplitude adjustment holes (1.12) for adjusting the working width. A stop plate (1.4) for limiting the rotation of the longitudinal rotation axis (3) is also provided next to the longitudinal rotation axis hole (1.13). The upright panel (1.2) is provided with a large through hole (1.22) for the transverse axis mounting seat (2.2) to pass through. The cylinder push rod (9) is installed between the upright panels (1.2).

4. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 3, characterized in that: The double-axis bearing seat (2) further comprises a limit pin mounting seat (2.3) having a limit pin mounting hole (2.31). The longitudinal axis mounting seat (2.1) and the limit pin mounting seat (2.3) are respectively located at the front and rear sides of the transverse axis mounting seat (2.2). A small through hole (1.21) for the limit pin (5) to pass through is formed on the vertical plate (1.2) close to the soil turning side. The two ends of the limit pin (5) are respectively a threaded end and a countersunk end. The double-axis bearing seat (2) and the plow After the body support assembly (1) is assembled, the threaded end of the limit pin (5) is installed in the limit pin mounting seat (2.3), the countersunk end of the limit pin (5) is located between the two vertical plates (1.2), and the countersunk end of the limit pin (5) and the limit pin mounting seat (2.3) sandwich the vertical plate (1.2) close to the soil turning side; when the reversing plow is in a horizontal working state, the countersunk end of the limit pin (5) fits the vertical plate (1.2) close to the soil turning side for limiting.

5. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 4, characterized in that: A countersunk gasket (6) is also provided between the countersunk end of the limit pin (5) and the vertical plate (1.2) close to the soil turning side.

6. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 1, characterized in that: Guide plates (19) are provided on the inner side walls of the two plow column clamps. The two guide plates (19) are respectively fitted with the left and right sides of the oil cylinder push rod (9). Two guide blocks (18) are also provided between the two guide plates (19). The guide blocks (18) are respectively located at the upper and lower sides of the oil cylinder push rod group composed of the two oil cylinder push rods (9).

7. A bidirectional obstacle avoidance and overload protection device for a reversible plow according to claim 1, characterized in that: A piston top block (15.2) is also provided between the cylinder push rod group consisting of two cylinder push rods (9) and the cylinder piston (15.1) of the overload protection cylinder (15).

8. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 2, characterized in that: The longitudinal axis mounting seat (2.1) and the transverse axis mounting seat (2.2) are both tubular, and a connecting rib (2.4) is provided between the longitudinal axis mounting seat (2.1) and the transverse axis mounting seat (2.2).

9. A bidirectional obstacle avoidance overload protection device for a reversible plow according to claim 3, characterized in that: A connecting plate (1.3) for enhancing structural strength is provided between the two vertical plates (1.2), and reinforcing ribs (1.5) are provided at the connection between the vertical plates (1.2) and the panel (1.1).

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