Leveling and deviation adjusting composite mechanism of farming machine and farming machine for hills and mountains

Abstract

The utility model provides a leveling and deviation-adjusting composite mechanism of agricultural machinery. The composite mechanism is used for connecting and adjusting the positions of a hilly and mountain tractor and an agricultural implement. The combined mechanism comprises a tractor connecting assembly, a machine tool connecting assembly and a posture adjusting assembly. The tractor connecting assembly comprises a tractor traction frame, the machine tool connecting assembly comprises a middle frame and a machine tool traction frame, and the middle frame can rotate relative to the tractor traction frame; the two ends of a leveling hydraulic cylinder and the two-way reciprocating deviation adjusting hydraulic cylinder of the posture adjusting assembly are connected with a tractor traction frame and a middle frame correspondingly, and the posture adjusting assembly stretches out and draws back to drive the middle frame to rotate. Telescopic piston rods are arranged at the two ends of the two-way reciprocating deviation adjusting hydraulic cylinder, and the two ends of the two-way reciprocating deviation adjusting hydraulic cylinder are connected with the two ends of the machine tool traction frame through connecting pieces to drive the machine tool traction frame to slide left and right; the leveling and deviation adjusting composite mechanism can achieve transverse dip angle adjustment of the agricultural implement and adjustment of the left-right position of the agricultural implement.

Description

Technical Field

[0001] The utility model relates to the technical field of tractor traction suspension, in particular to a leveling and deviation adjustment composite mechanism of agricultural machinery and agricultural machinery used in hilly and mountainous areas. Background Art

[0002] A tractor's traction hitch mechanism, comprised of a series of rods, connects various agricultural implements, transmitting the tractor's lifting and pulling forces, and ensuring the implements are correctly positioned during transport and operation. In flat or gently undulating farmland, existing conventional hitch mechanisms are sufficient for normal implement operation. However, in hilly and mountainous areas with significant terrain variation, conventional hitch mechanisms can cause significant variations in the position of the implements relative to the ground. This is due to their lack of lateral adjustment, making them unable to adjust to the terrain's fluctuations. This results in poor operational quality and low efficiency.

[0003] In addition, when the tractor is hooked up to agricultural machinery, since the machinery is placed on the ground, the left and right sides may not be aligned when the tractor is reversed, making it impossible to quickly connect with the agricultural machinery. Utility Model Content

[0004] The utility model aims to solve the problem that the existing tractor-mounted agricultural machinery cannot adjust the angle, and therefore provides a leveling and deflection adjustment composite mechanism for agricultural machinery and agricultural machinery for hilly and mountainous areas. The setting of the leveling and deflection adjustment composite mechanism can realize the lateral inclination adjustment of the agricultural machinery during operation and the left and right alignment function when the agricultural machinery is mounted.

[0005] In order to solve the above technical problems, the utility model provides a compound mechanism for leveling and adjusting agricultural machinery, which is used to connect and adjust the position of a tractor and agricultural implements in hilly and mountainous areas; the compound mechanism includes a tractor connection component, an implement connection component and a posture adjustment component;

[0006] The tractor connection assembly includes a tractor traction frame, and the implement connection assembly includes an intermediate frame and an implement traction frame. The tractor traction frame and the intermediate frame are connected via a first connection assembly, and the intermediate frame is rotatable relative to the tractor traction frame.

[0007] The posture adjustment assembly includes a lateral leveling unit and a left-right adjustment unit. The lateral leveling unit includes a leveling hydraulic cylinder. The two ends of the leveling hydraulic cylinder are respectively connected to the tractor traction frame and the intermediate frame. The driving end of the leveling hydraulic cylinder is connected to the intermediate member and is telescopically driven to rotate the intermediate frame so that the intermediate frame always remains parallel to the working ground of the machine.

[0008] The left-right adjustment unit includes a bidirectional reciprocating hydraulic cylinder, a connecting plate, and an intermediate connecting pipe; the intermediate connecting pipe is fixedly mounted on the intermediate frame; the intermediate connecting pipe is provided with a first through hole along the axial direction of the intermediate frame, and the tool traction frame is inserted into the first through hole; the bidirectional reciprocating hydraulic cylinder is fixedly mounted on the intermediate connecting pipe;

[0009] Both ends of the bidirectional reciprocating deviation adjustment hydraulic cylinder are retractable piston rods; two connecting plates are provided, one end of the two connecting plates is respectively connected to the piston rods at both ends, and the other end thereof is respectively connected to the two ends of the machine traction frame; the pistons at both ends move left and right, driving the machine traction frame to slide left and right relative to the first through hole.

[0010] In a preferred embodiment, the posture adjustment component further includes a control unit, and the control unit includes a tilt sensor and a distance sensor;

[0011] The tilt sensor is arranged at the bottom of the tractor traction frame, and is used to sense the first posture angle of the tractor traction frame; the distance measuring sensors are respectively arranged at both ends of the bottom of the intermediate frame, and the distance measuring sensors are used to measure the distance between two points of the intermediate frame and the ground.

[0012] In a preferred embodiment, the control unit also includes a controller and a calculator; the calculator is respectively connected to the inclination sensor and the distance sensor, and is used to calculate the second attitude angle of the intermediate frame based on the data received from the two distance sensors, and then calculate the angle difference between the first attitude angle and the second attitude angle. The calculator is also electrically connected to the controller, and is used to send the calculated angle difference data to the controller. The controller is electrically connected to the leveling hydraulic cylinder, and is used to control the action of the leveling hydraulic cylinder to drive the intermediate frame to rotate the angle value of the angle difference, so that it always remains parallel to the working ground of the machine.

[0013] In a preferred embodiment, the tractor traction frame and the implement traction frame are both triangular frame structures.

[0014] In a preferred embodiment, three first suspension supports are provided on a side of the tractor traction frame away from the intermediate frame, and the three first suspension supports are respectively located at three vertices of the triangular frame;

[0015] A second suspension fulcrum is provided at the vertex of one side of the implement traction frame away from the tractor traction frame, and connecting hooks are respectively provided at both ends of the bottom.

[0016] In a preferred embodiment, the first connecting assembly includes a first bearing seat provided at the bottom of the tractor traction frame, a second bearing seat provided at the bottom of the intermediate frame, and a rotating shaft;

[0017] Both ends of the rotating shaft are respectively inserted into the first bearing seat and the second bearing seat.

[0018] In a preferred embodiment, both ends of the leveling hydraulic cylinder are connected to the top of the tractor traction frame and the bottom of the middle frame respectively.

[0019] In a preferred embodiment, the stroke of the piston rods on both sides of the bidirectional reciprocating deflection adjustment hydraulic cylinder is 0mm-200mm.

[0020] In a preferred embodiment, the extension and contraction of the leveling hydraulic cylinder drives the intermediate frame to rotate, and the lateral angle adjustment range of the intermediate frame is -25° to 25°, with an adjustment error of ≤±5°.

[0021] The utility model also provides agricultural machinery for hilly and mountainous areas, including a tractor, agricultural implements and the said agricultural machinery's leveling and deviation adjustment composite mechanism;

[0022] The tractor is connected to the tractor traction frame, and the agricultural implement is connected to the implement traction frame.

[0023] Compared with the existing technology, the technical solution of the utility model has the following beneficial effects:

[0024] By providing a combined leveling and deflection adjustment mechanism, the tractor and implement can be connected. The intermediate frame can be rotated during operation to achieve lateral leveling of the implement. The left-right adjustment unit can also adjust the relative position of the implement drawbar and the tractor drawbar, ensuring left-right alignment when the tractor and implement are docked. This combined function of lateral leveling and left-right adjustment enables the rotation of the intermediate frame and the left-right movement of the implement drawbar. BRIEF DESCRIPTION OF THE DRAWINGS

[0025] Figure 1 Schematic diagram of the three-dimensional structure of the leveling and deflection adjustment composite mechanism in the first embodiment;

[0026] Figure 2 This is a schematic diagram of the rear side of the leveling and deflection adjustment composite mechanism in the first embodiment;

[0027] Figure 3 A side view of the leveling and deflection adjustment composite mechanism in the first embodiment;

[0028] Figure 4 It is a schematic diagram of the structure of the hilly and mountainous agricultural machinery in the second embodiment.

[0029] Explanation of the accompanying reference numerals: 100, tractor traction frame; 200, intermediate frame; 210, implement traction frame; 211, connecting hook; 300, leveling hydraulic cylinder; 400, bidirectional reciprocating deviation adjustment hydraulic cylinder; 410, connecting plate; 420, intermediate connecting pipe; 500, inclination sensor; 510, distance measuring sensor; 600, first bearing seat; 610, second bearing seat; 620, rotating shaft; 700, angle code; 710, hydraulic cylinder support. DETAILED DESCRIPTION

[0030] The technical solutions in the embodiments of the present invention will be clearly and completely described below in conjunction with the drawings in the embodiments of the present invention; it is obvious that the described embodiments are only part of the embodiments of the present invention, rather than all the embodiments. Based on the embodiments of the present invention, all other embodiments obtained by ordinary technicians in this field without making creative work are within the scope of protection of the present invention.

[0031] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "top / bottom," and the like, indicating orientations or positional relationships, are based on the orientations or positional relationships shown in the accompanying drawings and are intended solely to facilitate the description of this utility model and simplify the description. They are not intended to indicate or imply that the devices or components referred to must have a specific orientation, be constructed, or operate in a specific orientation. Therefore, they should not be construed as limitations on this utility model. Furthermore, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0032] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "provided with", "set / connected", "connected", etc. should be understood in a broad sense. For example, "connection" can be a wall-mounted connection, a detachable connection, or an integral connection. It can be a mechanical connection or an electrical connection. It can be a direct connection or an indirect connection through an intermediate medium. It can be the internal connection of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0033] First embodiment, reference Figure 1-Figure 3 .

[0034] like Figure 1As shown, this embodiment provides a combined leveling and yaw adjustment mechanism for agricultural machinery, used to connect and adjust the position of a tractor and agricultural implement in hilly or mountainous terrain. The combined mechanism includes a tractor connection assembly, an implement connection assembly, and a posture adjustment assembly. The tractor connection assembly includes a tractor drawbar 100, an implement connection assembly includes an intermediate frame 200, and an implement drawbar 210. The implement drawbar 210 is mounted on the intermediate frame 200 and located on the side of the intermediate frame 200 away from the tractor drawbar 100. The tractor drawbar 100 and the intermediate frame 200 are connected by a first connection assembly, and the intermediate frame 200 is rotatable relative to the tractor drawbar 100.

[0035] In this embodiment, the posture adjustment assembly includes a lateral leveling unit and a left and right adjustment unit. The lateral leveling unit includes a leveling hydraulic cylinder 300. One end of the leveling hydraulic cylinder 300 is connected to the tractor traction frame 100, and the other end is connected to the intermediate frame 200. The leveling hydraulic cylinder 300 is extended and retracted to drive the intermediate frame 200 to rotate relative to the tractor traction frame 100, so that the intermediate frame 200 always remains parallel to the working ground of the implement.

[0036] like Figure 2 As shown, the left and right adjustment unit includes a two-way reciprocating adjustment hydraulic cylinder 400, a connecting piece 410, and an intermediate connecting pipe 420. The intermediate connecting pipe 420 is fixedly mounted on the intermediate frame 200. The intermediate connecting pipe 420 is provided with a first through hole along the axial direction of the intermediate frame 200. The machine traction frame 210 is inserted and movably arranged in the first through hole. The two-way reciprocating adjustment hydraulic cylinder 400 is fixedly mounted on the bottom of the intermediate connecting pipe 420, and both ends of the two-way reciprocating adjustment hydraulic cylinder 400 are retractable piston rods. The connecting piece 410 is provided in two pieces, and the two connecting pieces 4 One end of 10 is respectively connected to the piston rods at both ends of the two-way reciprocating deviation adjusting hydraulic cylinder 400, and the other ends of the two connecting plates 410 are respectively connected to the two ends of the machine traction frame 210. The piston rod of the two-way reciprocating deviation adjusting hydraulic cylinder 400 moves left and right to drive the machine traction frame 210 to slide left and right in the first through hole. When the tractor and the agricultural machinery are not aligned left and right when docking, the two-way reciprocating deviation adjusting hydraulic cylinder 400 can be used to drive the machine traction frame 210 to move left and right to align the agricultural machinery and the machine traction frame 210, thereby facilitating the docking of the tractor and the agricultural machinery.

[0037] Specifically, the intermediate connecting tube 420 is welded to the central top of the intermediate frame 200, and the bottom cross bar of the tool traction frame 210 passes through the first through hole of the intermediate connecting tube 420. The first through hole is a shape that is compatible with the bottom cross bar of the tool traction frame 210, so that the tool traction frame 210 can be installed in the first through hole and can slide left and right along the first through hole.

[0038] In this embodiment, the posture adjustment assembly further includes a control unit, which includes a controller, a calculator, a tilt sensor 500 disposed at the bottom of the tractor draw frame 100, and two distance sensors 510 disposed at the bottom of both ends of the intermediate frame 200. The tilt sensor 500 is used to sense a first posture angle of the tractor draw frame 100, and the two distance sensors 510 are used to measure the distance between the two ends of the intermediate frame 200 and the ground. The calculator is electrically connected to the tilt sensor 500 and the two distance sensors 510, respectively, and is used to calculate a second posture angle of the intermediate frame 200 based on data received from the two distance sensors 510, and then calculate the angle difference between the first posture angle and the second posture angle. The calculator is also electrically connected to the controller for sending the calculated angle difference data to the controller. The controller is also electrically connected to the leveling hydraulic cylinder 300 for controlling the movement of the leveling hydraulic cylinder 300 to drive the intermediate frame 200 to rotate by the angle difference, so that the intermediate frame 200 always remains parallel to the working surface of the machine, thereby completing the lateral leveling of the posture of the intermediate frame 200.

[0039] Furthermore, the inclination sensor 500 senses the lateral inclination of the tractor's drawbar 100 and, based on vehicle speed and overall machine size, adds a delay. This ensures that when the mounted agricultural implement traverses an inclined slope, it controls the leveling hydraulic cylinder 300 to ensure the implement remains parallel to the work surface, thereby automatically maintaining horizontal operation. The distance sensor 510 measures the relative distance between the intermediate frame 200 and the ground and, based on a geometric model, calculates the intermediate frame's second attitude angle as a feedback signal, forming a complete control closed loop.

[0040] Aiming at the nonlinear and time-varying parameter problems in the leveling and yaw adjustment control process, a fuzzy algorithm is used to realize the leveling and yaw adjustment of mounted agricultural machinery. Appropriate membership functions are selected, fuzzy control rules are established, and sensor information is fuzzified. Based on the database and fuzzy control rules, fuzzy reasoning is performed on the fuzzy signal to obtain the output. The output signal controls the movement of the leveling hydraulic cylinder 300 and the bidirectional reciprocating yaw adjustment hydraulic cylinder 400. When the hydraulic cylinder piston rod moves to the target position and remains unchanged, the agricultural machinery completes posture adjustment and maintenance.

[0041] like Figure 1 As shown, both the tractor draw frame 100 and the implement draw frame 210 are isosceles triangular frame structures. The base of the tractor draw frame 100, the intermediate frame 200, and the base of the implement draw frame 210 are hollow square rods, with the first through-hole being a square hole. This triangular frame structure facilitates the passage of the tractor's power take-off (PTO) drive shaft, which connects to other power-requiring agricultural implements such as rotary tillers via a universal joint, providing power to the implement and driving the blade shaft for rotary tillage.

[0042] In this embodiment, the tractor drawbar 100 has three first suspension points on the side facing away from the intermediate frame 200. These points are located at the three vertices of the triangular frame. These three points include two lower points and one upper point. The rear of the tractor has a three-point suspension module corresponding to the three first suspension points. This module includes two lower tie rods and one upper tie rod. The two lower tie rods are connected to the two lower suspension points via pins (flat-headed cylindrical pins with holes), while the upper tie rod is connected to the upper suspension point via a pin (flat-headed cylindrical pins with holes), thereby connecting the tractor to the tractor drawbar 100. The implement drawbar 210 has a second suspension point at a vertex on the side facing away from the tractor drawbar 100. Quick-connect hooks 211 are located at each end of its base for connecting to agricultural implements. In this embodiment, the agricultural implements can be rotary tillers, seed drills, and the implements are attached to the implement drawbar 210 via pins (flat-headed cylindrical pins with holes).

[0043] like Figure 3 As shown, the first connecting assembly specifically includes a first bearing seat 600 disposed at the bottom of the tractor draw frame 100, a second bearing seat 610 disposed at the bottom of the intermediate frame 200, and a rotating shaft 620. The first bearing seat 600 and the second bearing seat 610 are disposed at corresponding positions on the tractor draw frame 100 and the intermediate frame 200, and are respectively fixedly connected to the center of the bottom of the tractor draw frame 100 and the bottom of the intermediate frame 200 by bolts. The ends of the rotating shaft 620 are respectively inserted into the first bearing seat 600 and the second bearing seat 610. When the leveling hydraulic cylinder 300 is extended or retracted, it can drive the intermediate frame 200 to rotate relative to the tractor draw frame 100.

[0044] Specifically, the first bearing seat 600 and the second bearing seat 610 are both UCP212 bearing seats. The diameter of the rotating shaft 620 is 60 mm, and the material is bearing steel, which can ensure sufficient bending strength.

[0045] In this embodiment, the bidirectional reciprocating deviation adjustment hydraulic cylinder 400 is a double-acting hydraulic cylinder, and the stroke of the piston rods on both sides is 0-200 mm. Through the extension and retraction of the piston rods on both sides, the left and right deviation adjustment range of the agricultural implement can be -200-200 mm.

[0046] In this embodiment, one end of the leveling hydraulic cylinder 300 is connected to the top of the tractor draw frame 100, and the other end is connected to the bottom of the intermediate frame 200. Specifically, hydraulic cylinder supports 710 are provided at the top of the tractor draw frame 100 and the bottom of the intermediate frame 200. The two ends of the leveling hydraulic cylinder 300 are connected to the two hydraulic cylinder supports 710 via pins. The top of the leveling hydraulic cylinder 300 is connected to the top of the triangular frame of the tractor draw frame 100 via the hydraulic cylinder supports 710. The intermediate frame 200 is also equipped with an angle bracket 700, which is fixed to the intermediate frame 200 with bolts. The lower end of the hydraulic cylinder support 710 is also bolted to the angle bracket 700. The intermediate connecting pipe 420 is located in the center of the intermediate frame 200. Two distance measuring sensors 510 are symmetrically fixed at both ends of the bottom of the intermediate frame 200. They can sense the real-time distance to the ground and transmit the data to the computer to calculate the second attitude angle of the intermediate frame 200.

[0047] Specifically, the leveling hydraulic cylinder 300 is a double-acting hydraulic cylinder with a stroke of 200 mm. By telescoping, the intermediate frame 200 can be rotated relative to the tractor traction frame 100 with the rotation axis 620 as the rotation center, so that the lateral angle adjustment range of the intermediate frame 200 is -25° to 25°, and the posture adjustment error is ≤±5°.

[0048] The working process of the leveling and deviation adjustment composite mechanism in this embodiment is as follows:

[0049] First, connect the tractor to the tractor drawbar 100, then reverse the tractor and dock it with the agricultural implement placed on the ground. When it is found that the agricultural implement cannot be aligned with the connection point of the implement drawbar 210, the two-way reciprocating adjustment hydraulic cylinder 400 can be started to adjust the position of the implement drawbar 210 left and right, so that the second suspension support point and the quick connection hook 211 of the implement drawbar 210 are aligned with the connection point on the agricultural implement, thereby quickly connecting the implement drawbar 210 and the agricultural implement.

[0050] Specifically, the initial position of the suspended agricultural implement is centered relative to the tractor, and the piston rod stroke of the bidirectional reciprocating deviation adjustment hydraulic cylinder 400 is in the middle position. When the left side of the piston rod is shortened and the right side is extended, the connecting piece 410 connected to the piston rod is driven to move. Since the implement traction frame 210 is welded and fixed to the connecting pieces 410 at both ends, the implement traction frame 210 is driven to slide to the right relative to the middle connecting pipe 420; when the left side of the piston rod is extended and the right side is shortened, the connecting piece 410 connected to the piston rod is driven to move, thereby driving the implement traction frame 210 to slide to the left relative to the middle connecting pipe 420. Then, the tractor drives the agricultural implement to operate through the leveling and deviation adjustment composite mechanism. During the operation, when the middle frame 200 is not parallel to the terrain slope, the control unit controls the leveling hydraulic cylinder 300 to extend and retract, thereby driving the middle frame 200 to rotate relative to the tractor traction frame 100, and finally making the agricultural implement level with the working ground.

[0051] Specifically, the agricultural implement is initially horizontal, with the stroke of the leveling hydraulic cylinder 300 at a neutral position. When the piston rod of the leveling hydraulic cylinder 300 is shortened, the intermediate frame 200 rotates clockwise, driving the implement drawbar 210 and the agricultural implement in conjunction. When the piston rod is extended, the intermediate frame 200 rotates counterclockwise, driving the implement drawbar 210 in conjunction. By controlling the extension and retraction of the piston rod of the leveling hydraulic cylinder 300, the inclination angle of the suspended agricultural implement can be adjusted from -25° to 25°, enabling lateral adjustment of the suspended agricultural implement.

[0052] The leveling and deviation adjustment composite mechanism in this embodiment can not only realize the connection between the tractor and the agricultural machinery, but also realize the lateral leveling of the posture of the agricultural machinery through the rotation of the intermediate frame 200 and the machinery traction frame 210 during operation, and can also adjust the relative position of the machinery traction frame 210 left and right through the left and right adjustment units to ensure that when the machinery traction frame 210 is docked with the agricultural machinery, the two are aligned in the left and right positions.

[0053] The second embodiment, referring to Figure 4 .

[0054] This embodiment discloses a farming machine for hilly and mountainous areas, including agricultural implements and a tractor, and also includes the leveling and deviation adjustment composite mechanism of the farming machine in the first embodiment. The tractor is connected to the tractor traction frame 100, and the agricultural implements are connected to the implement traction frame 210.

[0055] In this embodiment, a three-point suspension module is provided at the rear of the tractor, and is connected to the tractor drawbar 100 via the three-point suspension module. The three-point suspension module includes an upper pull rod and a lower pull rod. The upper pull rod is connected to the upper suspension support point of the tractor drawbar 100 via a pin (a flat-headed cylindrical pin with a hole). Two lower pull rods are provided, and the two lower pull rods are respectively connected to the two lower suspension support points via pins (a flat-headed cylindrical pin with a hole).

[0056] The agricultural machinery in this embodiment is a rotary tiller, and one end of the rotary tiller is provided with three connection points, including a small pull rod at its top and a third suspension fulcrum at both ends of the bottom edge. The rotary tiller is connected to the second suspension fulcrum at the top of the machine traction frame 210 through the small pull rod, and the third suspension fulcrum at both ends of the bottom edge is respectively connected to the quick connection hooks 211 at both ends of the bottom edge of the machine traction frame 210, thereby connecting the tractor, the leveling and deviation adjustment compound mechanism, and the rotary tiller together.

[0057] The hilly and mountainous agricultural machinery of this embodiment, while enabling connection between the tractor and the agricultural implement, can also achieve lateral leveling of the agricultural implement during operation by rotating the intermediate frame 200 and the implement traction frame 210. Furthermore, the relative position of the implement traction frame 210 and the agricultural implement can be adjusted left and right by the left and right adjustment unit to ensure that the implement traction frame 210 and the agricultural implement are aligned left and right when docked. This is suitable for hilly and mountainous areas with large terrain undulations, and can be used for operations such as plowing, rotary tillage, ridging, cellar / pond digging, fertilizing, mulching, transplanting, watering, plant protection, film removal, stalk pulling, and transportation in these hilly and mountainous areas.

[0058] The above is only a preferred specific implementation method of the present invention, but the design concept of the present invention is not limited to this. Any technician familiar with the technical field who uses this concept to make non-substantial changes to the present invention within the technical scope disclosed by the present invention shall be deemed to infringe the protection scope of the present invention.

Claims

1. A composite mechanism for leveling and deflection adjustment of agricultural machinery, characterized by: The composite mechanism is used to connect and adjust the position of a tractor and agricultural implements in hilly and mountainous areas; the composite mechanism includes a tractor connection component, an implement connection component, and a posture adjustment component; The tractor connection assembly includes a tractor traction frame, and the implement connection assembly includes an intermediate frame and an implement traction frame. The tractor traction frame and the intermediate frame are connected via a first connection assembly, and the intermediate frame is rotatable relative to the tractor traction frame. The posture adjustment assembly includes a lateral leveling unit and a left-right adjustment unit. The lateral leveling unit includes a leveling hydraulic cylinder. The two ends of the leveling hydraulic cylinder are respectively connected to the tractor traction frame and the intermediate frame. The driving end of the leveling hydraulic cylinder is connected to the intermediate frame and is telescopic to drive the intermediate frame to rotate. The left-right adjustment unit includes a bidirectional reciprocating hydraulic cylinder, a connecting plate, and an intermediate connecting pipe; the intermediate connecting pipe is fixedly mounted on the intermediate frame; the intermediate connecting pipe is provided with a first through hole along the axial direction of the intermediate frame, and the tool traction frame is inserted into the first through hole; the bidirectional reciprocating hydraulic cylinder is fixedly mounted on the intermediate connecting pipe; Both ends of the bidirectional reciprocating deviation adjustment hydraulic cylinder are retractable piston rods; two connecting plates are provided, one end of the two connecting plates is respectively connected to the piston rods at both ends, and the other end thereof is respectively connected to the two ends of the machine traction frame; the pistons at both ends move left and right, driving the machine traction frame to slide left and right relative to the first through hole.

2. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 1, characterized in that: The posture adjustment component further includes a control unit, which includes a tilt sensor and a distance sensor; The tilt sensor is arranged at the bottom of the tractor traction frame, and is used to sense the first posture angle of the tractor traction frame; the distance measuring sensors are respectively arranged at both ends of the bottom of the intermediate frame, and the distance measuring sensors are used to measure the distance between two points of the intermediate frame and the ground.

3. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 2, characterized in that: The control unit further includes a controller and a calculator; the calculator is electrically connected to the inclination sensor, the distance sensor, and the controller respectively; and the controller is used to control the leveling hydraulic cylinder.

4. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 1, characterized in that: The tractor traction frame and the implement traction frame are both triangular frame structures.

5. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 4, characterized in that: The tractor traction frame is provided with three first suspension supports on a side away from the intermediate frame, and the three first suspension supports are respectively located at three vertices of the triangular frame; A second suspension fulcrum is provided at the vertex of one side of the implement traction frame away from the tractor traction frame, and connecting hooks are respectively provided at both ends of the bottom.

6. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 1, characterized in that: The first connecting assembly includes a first bearing seat provided at the bottom of the tractor traction frame, a second bearing seat provided at the bottom of the intermediate frame, and a rotating shaft; Both ends of the rotating shaft are respectively inserted into the first bearing seat and the second bearing seat.

7. The combined leveling and deviation adjustment mechanism for agricultural machinery according to claim 1, characterized in that: The two ends of the leveling hydraulic cylinder are respectively connected to the top of the tractor traction frame and the bottom of the middle frame.

8. The combined leveling and deviation adjustment mechanism for agricultural machinery according to any one of claims 1 to 7, characterized in that: The stroke of the piston rods on both sides of the bidirectional reciprocating deflection adjustment hydraulic cylinder is 0mm-200mm.

9. The combined leveling and deviation adjustment mechanism for agricultural machinery according to any one of claims 1 to 7, characterized in that: The leveling hydraulic cylinder is extended and retracted to drive the intermediate frame to rotate. The horizontal angle adjustment range of the intermediate frame is -25° to 25°, and the adjustment error is ≤±5°.

10. Agricultural machinery for hilly and mountainous areas, characterized by: A composite mechanism for leveling and deflection adjustment comprising a tractor, an agricultural implement, and the agricultural machinery according to any one of claims 1 to 9; The tractor is connected to the tractor traction frame, and the agricultural implement is connected to the implement traction frame.

Images