A hydraulic drive based active lateral stabilizer for agricultural machines

Abstract

The utility model discloses a kind of agricultural machinery transverse active stabilizing device based on hydraulic drive, belong to agricultural machinery technical field, the device includes crossbeam, lower support arm and with the transverse stabilizer bar of lower support arm both ends fixed connection, device is also equipped with the fixed frame of being fixed to crossbeam, hydraulic oil cylinder and hanger bracket;The cylinder body end of hydraulic oil cylinder is fixed to crossbeam by fixed frame, piston rod end is rotatably connected with the first end of hanger bracket, the second end of hanger bracket is rotatably connected with the middle part of transverse stabilizer bar.The utility model drives hanger bracket by hydraulic oil cylinder and applies active torsional moment to transverse stabilizer bar, solve the existing agricultural implement when uneven ground operation transverse posture unstable, the problem of low operation precision, reaches active, fast correction implement transverse inclination Technical effect, prevent implement drop too fast itself in the process of transportation and operation jolt and cause impact to seeding mechanism, play the role of buffer, improve the operation stability and precision of agricultural implement under complex terrain.

Description

Technical Field

[0001] This utility model relates to the field of agricultural machinery technology, and in particular to a hydraulically driven lateral active stabilization device for agricultural machinery. Background Technology

[0002] In modern agricultural production, it is common to use tractors to attach various agricultural implements (such as plows, seeders, boom sprayers, etc.) to work in the fields. Farmland often has uneven terrain, furrows, or slopes. When a tractor drives agricultural implements on these complex terrains, the implements, which are connected by a three-point suspension assembly, will inevitably tilt laterally in the left and right directions due to the undulations of the ground.

[0003] This lateral tilt directly affects the quality of operations. For example, for seeders, tilting can lead to inconsistent sowing depths on both sides; for boom sprayers, it can cause variations in spray height, affecting the uniformity of pesticide coverage. While existing tractor three-point suspension systems offer some floating capability, they primarily rely on gravity and the limiting action of passive linkages to maintain posture, lacking active correction capabilities. When encountering significant or rapid changes in ground conditions, their response is slow, their self-centering ability is insufficient, and they cannot effectively suppress implement tilting.

[0004] To improve this situation, some designs have introduced passive lateral stabilizer bar structures similar to those used in automobiles. While this structure can resist machine tilt to some extent, the self-centering torque it provides relies entirely on the torsional elasticity of the bar itself, with the force directly proportional to the tilt angle. When faced with severe ground impacts or continuous incline driving, this passive self-centering force is often insufficient to quickly and accurately restore the machine to a level working state. Therefore, existing technologies generally lack an effective means to actively output a strong and controllable self-centering torque based on the machine's actual tilt posture, thereby achieving rapid and forced lateral leveling.

[0005] Therefore, this utility model proposes a hydraulically driven active lateral stabilization device for agricultural machinery to address the shortcomings of existing technologies. Utility Model Content

[0006] To overcome the above shortcomings, this utility model provides a hydraulically driven active lateral stabilization device for agricultural machinery, which aims to improve the problem of unstable lateral posture and reduced operating accuracy of existing agricultural implements when operating on uneven ground due to the lack of an active return structure.

[0007] To achieve the above objectives, the present invention adopts the following technical solution: a hydraulically driven lateral active stabilization device for agricultural machinery, comprising a crossbeam, two lower support arms, a lateral stabilizer bar, a fixing frame, a hydraulic cylinder, and a hanging frame.

[0008] The crossbeam provides a basic mounting platform for the entire device. The two lower support arms are symmetrically arranged below the crossbeam, used to connect to the tractor's three-point suspension assembly and to support agricultural implements. The two ends of the lateral stabilizer bar are fixedly connected to the two lower support arms respectively.

[0009] The fixing frame is fixedly installed on the crossbeam, serving as a support structure for the hydraulic cylinder. The cylinder body end of the hydraulic cylinder is fixedly connected to the crossbeam via the fixing frame, and the piston rod end of the hydraulic cylinder is rotatably connected to the first end of the hanging frame. The second end of the hanging frame is rotatably connected to the middle of the lateral stabilizer bar. This combination of linear action of the hydraulic cylinder, transmitting force to the lateral stabilizer bar via the hanging frame, and thus applying a torsional torque to the lateral stabilizer bar, is the core technical solution for achieving active lateral stability of agricultural machinery.

[0010] Preferably, both ends of the lateral stabilizer bar are fixedly connected to the two lower support arms via connecting plates to ensure the reliability of the connection and the effective transmission of torque.

[0011] Preferably, the piston rod end of the hydraulic cylinder is rotatably connected to the first end of the hanger via a pin. This pin structure facilitates assembly and allows the connecting rod to rotate relative to each other during movement.

[0012] Preferably, the second end of the hanging bracket is rotatably connected to the middle of the transverse stabilizer bar via a pin, further refining the connection method of this key rotation point.

[0013] Preferably, the lateral stabilizer bar is a metal torsion bar with anti-torsional elasticity, the material properties of which ensure that it can undergo elastic deformation and generate a restoring force when subjected to force.

[0014] Preferably, a hydraulic throttle valve is connected to the oil line of the hydraulic cylinder. This throttle valve can provide damping in the non-active control state, further improving the passive stability performance of the device.

[0015] Preferably, the fixing frame is fixed to the crossbeam by bolts or welding, so as to select a suitable and secure connection method according to the actual installation requirements.

[0016] Preferably, the hanging frame is a plate-shaped or rod-shaped linkage structure, which ensures its strength and stability as a force transmission component.

[0017] This utility model has the following beneficial effects: 1. This utility model, by setting up a linkage mechanism composed of a hydraulic cylinder, a hanging frame, and a lateral stabilizer bar, efficiently converts the linear thrust output by the hydraulic cylinder into a torsional torque applied to the lateral stabilizer bar. Then, through the lower support arm, it applies an active restoring force to the entire implement, solving the problem that existing agricultural implements cannot actively cope with lateral tilt when operating on uneven ground, resulting in unstable posture and low operating accuracy. It achieves the effect of actively and quickly correcting the lateral posture of the implement, preventing the implement from descending too quickly and causing impact on the sowing mechanism during transportation and operation, thus playing a buffering role and improving the stability and accuracy of agricultural implements in complex terrain.

[0018] 2. This utility model cleverly forms a damping circuit in the non-active control state by connecting a hydraulic throttle valve in the oil circuit of the hydraulic cylinder. This solves the problem that existing technologies with only active control or purely passive suspension cannot suppress small-amplitude high-frequency swaying. It achieves the effect of passively suppressing the lateral swaying of the implement without consuming additional energy, further improving the ride smoothness and operational stability. Attached Figure Description

[0019] Figure 1 This is a perspective view of a hydraulically driven active stabilization device for agricultural machinery proposed in this utility model. Figure 2 This is a schematic diagram of the mounting frame for a hydraulically driven lateral active stabilization device for agricultural machinery proposed in this utility model. Figure 3 This is a schematic diagram of a lateral stabilizer bar for a hydraulically driven active lateral stabilization device for agricultural machinery, as proposed in this utility model. Figure 4 This is a schematic diagram of the lower support arm of a hydraulically driven active lateral stabilization device for agricultural machinery proposed in this utility model. Figure 5 This is a schematic diagram of a hydraulic cylinder for a hydraulically driven active lateral stabilization device for agricultural machinery, as proposed in this utility model.

[0020] Legend: 1. Lateral stabilizer bar; 2. Lower support arm; 3. Hanger; 4. Hydraulic cylinder; 5. Fixing frame; 6. Crossbeam; 7. Connecting plate. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] Reference Figures 1-5 This utility model provides an embodiment of a hydraulically driven lateral active stabilization device for agricultural machinery, comprising a crossbeam 6 and two lower support arms 2 symmetrically arranged below the crossbeam 6; the two ends of a lateral stabilizer bar 1 are fixedly connected to the two lower support arms 2 via connecting plates 7, and the lateral stabilizer bar 1 is a metal torsion bar with anti-torsional elasticity; the core stabilization mechanism of the device includes a fixed frame 5, a hydraulic cylinder 4, and a hanging frame 3; the fixed frame 5 is fixed to the crossbeam 6 by bolts or welding; the cylinder end of the hydraulic cylinder 4 is fixedly connected to the crossbeam 6 via the fixed frame 5, and the piston rod end of the hydraulic cylinder 4 is rotatably connected to the first end of the hanging frame 3, the rotatable connection being specifically achieved by a pin; the hanging frame 3 is a plate-shaped or rod-shaped connecting rod structure, and the second end of the hanging frame 3 is rotatably connected to the middle of the lateral stabilizer bar 1, the rotatable connection also being achieved by a pin; The fixing bracket 5 is securely connected to the lower central surface of the crossbeam 6 by bolts or welding. The function of the fixing bracket 5 is to provide a stable and immovable mounting point for the cylinder body end of the hydraulic cylinder 4. The cylinder body end of the hydraulic cylinder 4 is fixedly connected to the fixing bracket 5, thereby locking the position of the hydraulic cylinder 4 on the crossbeam 6. The piston rod end of the hydraulic cylinder 4 is arranged towards the lateral stabilizer bar 1 and is rotatably connected to the first end of the hanging bracket 3 via a pin. This rotatable connection allows for angular changes while transmitting thrust. The hanging bracket 3 is plate-shaped or rod-shaped. The linkage structure, with the second end of the hanger 3 also rotatably connected to the middle of the transverse stabilizer bar 1 via a pin, makes the hanger 3 a key link for force transmission, converting the linear motion of the hydraulic cylinder 4 into a torsional action on the transverse stabilizer bar 1. This linkage mechanism, consisting of the piston rod end of the hydraulic cylinder 4, the hanger 3, and the middle of the transverse stabilizer bar 1 connected in sequence by rotation, ensures that when the piston rod of the hydraulic cylinder 4 extends or retracts, its linear motion can be smoothly converted into the swing of the hanger 3, thereby applying an effective torsional torque to the transverse stabilizer bar 1. In a preferred embodiment, to achieve a stable fixed connection between the lateral stabilizer bar 1 and the lower support arm 2, both ends of the lateral stabilizer bar 1 are fixedly connected to the two lower support arms 2 via connecting plates 7 respectively. In one specific implementation, the piston rod end of the hydraulic cylinder 4 is rotatably connected to the first end of the hanger 3 via a pin. In another specific implementation, the second end of the hanging bracket 3 is rotatably connected to the middle part of the transverse stabilizer 1 by a pin. In a preferred embodiment, the lateral stabilizer bar 1 is made of a metal torsion bar with anti-torsional elasticity; In one preferred embodiment, a hydraulic throttle valve is connected to the oil circuit of the hydraulic cylinder 4; As a preferred embodiment, to ensure the secure installation of the fixing bracket 5, the fixing bracket 5 is fixed to the crossbeam 6 by bolts or welding; As a preferred embodiment, the specific structure of the hanging bracket 3 is a plate-shaped or rod-shaped linkage structure.

[0023] Working principle: When the tractor drives the agricultural implement in the field, the implement will tilt laterally due to the undulation of the ground. At this time, the posture detection component built into the equipment controls the piston rod of the hydraulic cylinder 4 to extend or retract. The piston rod of the hydraulic cylinder 4 pushes or pulls the first end of the suspension frame 3 through the pin shaft, causing the suspension frame 3 to swing. Since the second end of the suspension frame 3 is rotatably connected to the middle of the lateral stabilizer bar 1, the swing of the suspension frame 3 will apply a torsional torque to the lateral stabilizer bar 1. After the lateral stabilizer bar 1 undergoes torsional deformation, it applies a reverse restoring torque to the tractor suspension assembly through the connecting plates 7 and the lower support arm 2 fixedly connected to both ends, thereby restoring the tilted implement to a horizontal posture and realizing the active stabilization function. When the hydraulic cylinder 4 is not in active control mode, the oil circuit of the hydraulic cylinder 4 and the connected hydraulic throttle valve together form a damping circuit. This damping circuit can passively suppress the lateral sway generated by the machine during travel, thereby improving the lateral stability and working accuracy of the machine when working on uneven ground.

Claims

1. A hydraulically driven lateral active stabilization device for agricultural machinery, comprising: A crossbeam (6) and two lower support arms (2), the two lower support arms (2) being symmetrically arranged below the crossbeam (6); A lateral stabilizer bar (1) is fixedly connected at both ends to the two lower support arms (2); Its characteristic is that it further includes: A fixing frame (5) is fixedly installed on the crossbeam (6); Hydraulic cylinder (4), the cylinder body end of the hydraulic cylinder (4) is fixedly connected to the crossbeam (6) through the fixed frame (5), and the piston rod end of the hydraulic cylinder (4) is rotatably connected to the first end of the hanging frame (3); The second end of the hanging frame (3) is rotatably connected to the middle of the transverse stabilizer (1).

2. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The two ends of the lateral stabilizer bar (1) are fixedly connected to the two lower support arms (2) through connecting plates (7).

3. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The piston rod end of the hydraulic cylinder (4) is rotatably connected to the first end of the hanging frame (3) via a pin.

4. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The second end of the hanging bracket (3) is rotatably connected to the middle of the transverse stabilizer (1) by a pin.

5. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The lateral stabilizer bar (1) is a metal torsion bar with anti-torsional elasticity.

6. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: A hydraulic throttle valve is connected to the oil line of the hydraulic cylinder (4).

7. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The fixing frame (5) is fixed to the crossbeam (6) by bolts or welding.

8. The lateral active stabilization device for agricultural machinery based on hydraulic drive according to claim 1, characterized in that: The hanging frame (3) is a plate-shaped or rod-shaped connecting rod structure.

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