Hydraulic active profiling device for a hay and straw press

Abstract

The utility model discloses a kind of hydraulic active profiling devices of grass cutting and flattening machine, its features include hydraulic lifting device, profiling system, rotating seat, protection pole I, terrain perception system, protection pole II, grass blocking cloth, grass cutting and flattening device, control system, transmission device, suspension bracket.Gras cutting and flattening device is located in left side of machine tool, terrain perception system inclination 15 ° is installed in front of grass cutting and flattening device, can accurately identify the change of complex terrain, and feedback identification signal to control system, if meet stone or terrain mutation, hydraulic lifting device can substantially, quickly realize the autonomous lifting of machine tool;If terrain has no abnormal change, then control profiling system realizes profiling operation.The utility model preferably solves the problems of low profiling precision of traditional pasture harvesting equipment, uneven cutting height when operating in hilly and mountainous areas and machine tool easy to damage, etc., improves the efficiency and quality of alfalfa harvesting.

Description

Technical Field

[0001] This utility model relates to the field of forage machinery technology, specifically a hydraulic active contouring device for a grass cutter and flattener used for harvesting alfalfa and other forage grasses. Background Technology

[0002] Alfalfa, as one of the world's oldest cultivated forage crops, plays a crucial role in the development of my country's animal husbandry. Due to the distribution of arable land and competition between grain and forage crops for land, a large amount of alfalfa is planted in hilly and mountainous areas. Existing mowing and flattening equipment is not well adapted to turning, sloping terrain, and uneven ground, resulting in low alfalfa harvesting efficiency.

[0003] Currently, most lawn mowers and shredders in China rely on counterweights or spring suspension systems to passively adjust their height using ground reaction force. This type of contouring device has low adjustment precision, is prone to missed cuts and over-pressing, and cannot anticipate sudden changes in terrain or complex working environments such as hilly or mountainous areas with unexpected rocks, resulting in poor harvesting quality and even damage to the machine. Summary of the Invention

[0004] (1) Technical problems to be solved

[0005] To address the difficulties in mechanized harvesting of alfalfa in hilly and mountainous areas and the low adjustment accuracy of existing grass cutter flattener contouring devices, the purpose of this utility model is to provide a hydraulic active contouring device for grass cutter flatteners that is simple in structure and has high contouring accuracy.

[0006] (2) Technical solution

[0007] To achieve the above requirements, this utility model provides the following technical solution: a hydraulic active contouring device for a grass cutter and flattener, comprising a hydraulic lifting device, a contouring system, a rotating seat, a protective rod I, a terrain sensing system, a protective rod II, a grass-blocking cloth, a grass-cutting and flattening device, a control system, a transmission device, and a suspension frame; wherein the suspension frame is located on the right side of the implement and is connected to the tractor via a three-point suspension; the grass-cutting and flattening device is located on the left side of the implement; the protective rod II is located directly above the grass-cutting and flattening device to protect the implement from damage when the tilt angle is too large; the grass-blocking cloth is magnetically attached to the front of the grass-cutting and flattening device to achieve orderly distribution of grass. The system conveys and prevents grass from splashing; the terrain sensing system is installed at a 15° angle in front of the mower-flattening device, enabling accurate identification of changes in complex terrain; the protective rod I is connected to the terrain sensing system via a buffer hinge, thereby improving the system's measurement accuracy and impact resistance; the rotating seat is rotatably connected to the mower-flattening device; the hydraulic lifting device and the contouring system are both hinged to the rotating seat; the control system processes the received signals from the terrain sensing system and controls the hydraulic lifting device and the contouring system to complete the lifting or contouring operation of the implement; the transmission device uses a pulley to transmit power to the mower-flattening device.

[0008] The hydraulic lifting device mainly includes a rotating hub, a hydraulic device connecting pin, a hydraulic cylinder I, a main connecting rod, and a secondary connecting rod I. The hydraulic cylinder I is connected to the rotating hub via the hydraulic device connecting pin. The extension and retraction of the hydraulic cylinder I drives the main connecting rod to move, thereby causing the secondary connecting rod I, which is connected to the rotating seat, to rotate around the hinge point, achieving rapid and significant lifting of the machine.

[0009] The contouring system mainly includes an electro-hydraulic servo valve I, an electro-hydraulic servo valve II, a hydraulic cylinder II, a crossbeam, a telescopic rod I, a contouring connecting pin I, an adjusting plate, a secondary connecting rod II, a contouring connecting pin II, a telescopic rod II, a hydraulic cylinder III, a high-pressure hose, a fixing plate, a contouring connecting pin III, and a contouring connecting pin IV. The hydraulic cylinder II is connected to the rotation hub via the contouring connecting pin IV; the hydraulic cylinder III is connected to the fixing plate via the contouring connecting pin III; the electro-hydraulic servo valves I and II are fixed to the crossbeam with screws and connected to the hydraulic cylinders II and III respectively via high-pressure hoses; the adjusting plate is rigidly connected to the crossbeam; the telescopic rod I is fixed to the adjusting plate via the contouring connecting pin I; the hydraulic cylinder II drives the telescopic rod I to move, thereby adapting the implement to the current working terrain; the telescopic rod II is connected to the secondary connecting rod II via the contouring connecting pin II; the hydraulic cylinder III drives the telescopic rod II to move, thereby causing the secondary connecting rod II, connected to the rotating seat, to rotate around the hinge point, allowing the implement to closely conform to the undulations of the ground, achieving the contouring effect.

[0010] In the above scheme, the terrain perception system integrates an angle sensor and a lidar ranging module, and is connected to the protection rod I by a buffer hinge, specifically a composite structure of a rubber hinge sleeve, a disc spring assembly, and a hydraulic damper.

[0011] In the above scheme, hydraulic cylinder I, hydraulic cylinder II, and hydraulic cylinder III are all double-acting hydraulic cylinders.

[0012] In the above scheme, both electro-hydraulic servo valve I and electro-hydraulic servo valve II are three-position four-way servo valves with Y-type center position function.

[0013] In the above scheme, the high-pressure hose is made of rubber with a steel wire braided mesh in the middle. Beneficial effects

[0014] 1. This utility model effectively solves the problem of adaptability of grass cutter flatteners to alfalfa harvesting in hilly and mountainous areas, and improves the automation level of alfalfa harvesting; the terrain perception system has high detection accuracy and strong impact resistance, and feeds the detection results back to the control system for processing. If it encounters rocks or sudden changes in terrain, it will control the hydraulic lifting device to complete the lifting and lowering of the implement in a large range and quickly, thereby preventing the risk of the implement being damaged by touching the ground; if the terrain changes normally, it will control the contouring system to perform contouring operations. The overall structure is simple, the principle is clear, and the effect is significant.

[0015] 2. In this utility model, the terrain perception system integrates an angle sensor and a lidar ranging module to achieve three-dimensional terrain prediction, thereby enhancing the adaptability of the equipment to complex working conditions. It adopts a buffer hinge connection with the protective rod I, specifically a composite structure of a rubber hinge sleeve, a disc spring assembly, and a hydraulic damper, which perfectly solves the requirements of the terrain perception system for accuracy, rigidity, and impact resistance.

[0016] 3. In this utility model, the electro-hydraulic servo valve I and electro-hydraulic servo valve II of the contouring system are both three-position four-way servo valves with Y-type center position function, which can effectively improve the accuracy, balance locking force and stability of the contouring system. Furthermore, the connection between the system and the hydraulic cylinder is made of rubber with a steel wire braided mesh in the middle, which is easy to install and can absorb vibration, avoiding mechanical vibration interference with the valve core. Attached Figure Description

[0017] Figure 1 This is a schematic diagram of the overall structure of a hydraulic active contouring device for a lawn mower flattener according to the present invention.

[0018] Figure 2 This is a schematic diagram of the hydraulic lifting device of this utility model.

[0019] Figure 3 This is a schematic diagram of the overall structure of the contouring system of this utility model.

[0020] Figure 4 This is a schematic diagram of the control flow of this utility model.

[0021] In the diagram: 1-Hydraulic lifting device, 2-Following system, 3-Rotating seat, 4-Protective rod I, 5-Terrain sensing system, 6-Protective rod II, 7-Grass barrier, 8-Grass cutting and flattening device, 9-Control system, 10-Transmission device, 11-Suspension frame, 12-Rotation hub, 13-Hydraulic device connecting pin, 14-Hydraulic cylinder I, 15-Main connecting rod, 16-Secondary connecting rod I, 17-Electro-hydraulic servo valve II, 18-Electro-hydraulic servo valve I, 19-Hydraulic cylinder II, 20-Crossbeam, 21-Telescopic rod I, 22-Following connecting pin I, 23-Adjusting plate, 24-Secondary connecting rod II, 25-Following connecting pin II, 26-Telescopic rod II, 27-Hydraulic cylinder III, 28-High-pressure hose, 29-Fixing plate, 30-Following connecting pin III, 31-Following connecting pin IV. Detailed Implementation

[0022] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0023] A hydraulic active contouring device for a grass cutter and flattener, characterized in that it mainly includes a hydraulic lifting device (1), a contouring system (2), a rotating seat (3), a protective rod I (4), a terrain sensing system (5), a protective rod II (6), a grass-blocking cloth (7), a grass-cutting and flattening device (8), a control system (9), a transmission device (10), and a suspension frame (11), wherein the suspension frame (11) is located on the right side of the implement and is connected to the tractor via a three-point suspension; the grass-cutting and flattening device (8) is located on the left side of the implement; the protective rod II (6) is located directly above the grass-cutting and flattening device (8) to protect the implement from damage when the tilt angle is too large; the grass-blocking cloth (7) is magnetically attached to the front of the grass-cutting and flattening device (8) to achieve orderly transport of grass and prevent damage. To prevent grass from splashing; the terrain sensing system (5) is installed at an angle of 15° in front of the mowing and flattening device (8), which can accurately identify changes in complex terrain; the protective rod I (4) is connected to the terrain sensing system (5) by a buffer hinge, thereby improving the system's measurement accuracy and impact resistance; the rotating seat (3) is rotatably connected to the mowing and flattening device (8); the hydraulic lifting device (1) and the contouring system (2) are both hinged to the rotating seat (3); the control system (9) processes the received signals from the terrain sensing system (5) and controls the hydraulic lifting device (1) and the contouring system (2) to complete the lifting or contouring operation of the implement; the transmission device (10) uses a pulley to transmit power to the mowing and flattening device (8).

[0024] Furthermore, the hydraulic lifting device mainly includes a rotating hub (12), a hydraulic device connecting pin (13), a hydraulic cylinder I (14), a main connecting rod (15), and a secondary connecting rod I (16). The hydraulic cylinder I (14) is connected to the rotating hub (12) through the hydraulic device connecting pin (13). The hydraulic cylinder I (14) extends and retracts to drive the main connecting rod (15) to move, thereby causing the secondary connecting rod I (16) connected to the rotating seat (3) to rotate around the hinge point, so as to realize the rapid and large-scale lifting of the machine.

[0025] Furthermore, the contouring system mainly includes an electro-hydraulic servo valve II (17), an electro-hydraulic servo valve I (18), a hydraulic cylinder II (19), a crossbeam (20), a telescopic rod I (21), a contouring connecting pin I (22), an adjusting plate (23), a secondary connecting rod II (24), a contouring connecting pin II (25), a telescopic rod II (26), a hydraulic cylinder III (27), a high-pressure hose (28), a fixing plate (29), a contouring connecting pin III (30), and a contouring connecting pin IV (31). The hydraulic cylinder II (19) is connected to the rotating pivot (12) via the contouring connecting pin IV (31), and the hydraulic cylinder III (27) is connected to the fixing plate (29) via the contouring connecting pin III (30). The electro-hydraulic servo valve I (18) and the electro-hydraulic servo valve II (19) are also connected. Valve II (17) is fixed to the crossbeam (20) by screws and connected to hydraulic cylinder II (19) and hydraulic cylinder III (27) respectively by high pressure hose (28). Adjusting plate (23) is rigidly connected to crossbeam (20). Telescopic rod I (21) is fixed to adjusting plate (23) by contour connecting pin I (22). Hydraulic cylinder II (19) drives telescopic rod I (21) to move, so that the tool can adapt to the current working terrain. Telescopic rod II (26) is connected to secondary connecting rod II (24) by contour connecting pin II (25). Hydraulic cylinder III (27) drives telescopic rod II (26) to move, so that secondary connecting rod II (24) connected to rotating seat (3) rotates around the hinge point, so that the tool closely fits the undulation of the ground and realizes the contouring effect.

[0026] Furthermore, the specific working process of this utility model is as follows: During the mowing operation, the terrain perception system (5) detects the terrain information in real time and feeds it back to the control system (9). If there are rocks or sudden changes in terrain, the control system (9) controls the hydraulic lifting device (1) to respond quickly. The hydraulic cylinder I (14) extends and retracts to drive the main connecting rod (15) to move, so that the auxiliary connecting rod I (16) connected to the rotating seat (3) greatly lifts the machine on the side where the mowing and flattening device (8) is located to avoid obstacles and protect it from damage. If there is no abnormal terrain, the contouring system (2) plays a role. The electro-hydraulic servo valve I (18) and the electro-hydraulic servo valve II (17) finely adjust the working posture. Through the cooperation of the hydraulic cylinder II (19), the hydraulic cylinder III (27), the telescopic rod I (21), the telescopic rod II (26) and the auxiliary connecting rod II (24), the mowing and flattening device (8) closely fits the undulations of the ground, ensuring that the mowing height is uniform and the forage harvesting operation is completed efficiently.

[0027] The embodiments described above are merely preferred embodiments of the present invention, and while the descriptions are specific and detailed, they should not be construed as limiting the scope of the present invention. It should be noted that those skilled in the art can make various modifications, improvements, and substitutions without departing from the inventive concept, and these all fall within the protection scope of the present invention. Therefore, the protection scope of this patent should be determined by the appended claims.

Claims

1. A hydraulic active contouring device for a lawn mower flattener, characterized in that, The system includes a hydraulic lifting device (1), a contouring system (2), a rotating seat (3), a protective rod I (4), a terrain sensing system (5), a protective rod II (6), a grass-blocking cloth (7), a grass-cutting and flattening device (8), a control system (9), a transmission device (10), and a suspension frame (11). The suspension frame (11) is located on the right side of the implement and is connected to the tractor via a three-point suspension. The grass-cutting and flattening device (8) is located on the left side of the implement. The protective rod II (6) is located directly above the grass-cutting and flattening device (8) to protect the implement from damage when the tilt angle is too large. The grass-blocking cloth (7) is magnetically attached to the front of the grass-cutting and flattening device (8) to achieve orderly grass delivery and prevent grass from splashing. The terrain sensing system… The terrain sensing system (5) is installed at an angle of 15° in front of the mowing and flattening device (8), which can accurately identify changes in complex terrain; the protective rod I (4) is connected to the terrain sensing system (5) by a buffer hinge, thereby improving the system's measurement accuracy and impact resistance; the rotating seat (3) is rotatably connected to the mowing and flattening device (8); the hydraulic lifting device (1) and the contouring system (2) are both hinged to the rotating seat (3); the control system (9) processes the received signals from the terrain sensing system (5) and controls the hydraulic lifting device (1) and the contouring system (2) to complete the lifting or contouring operation of the implement; the transmission device (10) uses a pulley to transmit power to the mowing and flattening device (8). The hydraulic lifting device (1) includes a rotating hub (12), a hydraulic device connecting pin (13), a hydraulic cylinder I (14), a main connecting rod (15), and a secondary connecting rod I (16). The hydraulic cylinder I (14) is connected to the rotating hub (12) through the hydraulic device connecting pin (13). The hydraulic cylinder I (14) extends and retracts to drive the main connecting rod (15) to move, thereby causing the secondary connecting rod I (16) connected to the rotating seat (3) to rotate around the hinge point, so as to realize the rapid and large-scale lifting of the machine. The contouring system (2) includes an electro-hydraulic servo valve II (17), an electro-hydraulic servo valve I (18), a hydraulic cylinder II (19), a crossbeam (20), a telescopic rod I (21), a contouring connecting pin I (22), an adjusting plate (23), a secondary connecting rod II (24), a contouring connecting pin II (25), a telescopic rod II (26), a hydraulic cylinder III (27), a high-pressure hose (28), a fixing plate (29), a contouring connecting pin III (30), and a contouring connecting pin IV (31). The hydraulic cylinder II (19) is connected to the rotating hub (12) via the contouring connecting pin IV (31), and the hydraulic cylinder III (27) is connected to the fixing plate (29) via the contouring connecting pin III (30). The electro-hydraulic servo valve I (18) and the electro-hydraulic servo valve II (19) are connected to the rotating hub (12). 7) The adjustment plate (23) is rigidly connected to the crossbeam (20) by screws and connected to the hydraulic cylinder II (19) and hydraulic cylinder III (27) by high pressure hose (28). The telescopic rod I (21) is fixed to the adjustment plate (23) by contour connecting pin I (22). The hydraulic cylinder II (19) drives the telescopic rod I (21) to move, so that the tool can adapt to the current working terrain. The telescopic rod II (26) is connected to the auxiliary connecting rod II (24) by contour connecting pin II (25). The hydraulic cylinder III (27) drives the telescopic rod II (26) to move, so that the auxiliary connecting rod II (24) connected to the rotating seat (3) rotates around the hinge point, so that the tool closely fits the undulation of the ground and realizes the contouring effect.

2. The hydraulic active contouring device for a lawn mower flattener according to claim 1, characterized in that... It integrates an angle sensor and a lidar ranging module, and is connected to the protective rod I (4) by a buffer hinge, specifically a composite mechanism of a rubber hinge sleeve, a disc spring group and a hydraulic damper.

3. The hydraulic active contouring device for a lawn mower flattener according to claim 1, characterized in that... Hydraulic cylinder I (14), hydraulic cylinder II (19), and hydraulic cylinder III (27) are all double-acting hydraulic cylinders. Electro-hydraulic servo valve I (18) and electro-hydraulic servo valve II (17) are both three-position four-way servo valves with Y-type mid-position function.

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