Agricultural row unit

Abstract

The utility model discloses an agricultural pair of lines device, including base, the upper surface of base is opposite to be connected with two force arms of rotation, and two force arms are close to base two sides respectively, and the return mechanism is connected on the force arm, and the displacement sensor is connected to the force arm, and the support spare is installed on the base upper portion, and the encoder is equipped at the top of support spare, and the displacement sensor is connected with the encoder communication. When one side force arm is interfered, the other side force arm can normally perceive the crop line, thereby realizes avoiding the misjudgment, improves the purpose of pair of lines accuracy and stability.

Description

Technical Field

[0001] This utility model belongs to the field of agricultural machinery auxiliary equipment technology, and in particular relates to a row alignment device for agricultural machinery equipment. Background Technology

[0002] In traditional agricultural production, the row-alignment operation of machinery mainly relies on human observation and driving experience. Human judgment is easily affected by factors such as visual errors and terrain bumps, which can cause the equipment to deviate from the crop rows, resulting in mechanical ridge pressing and damage to crops. In addition, drivers who focus on row-alignment operation for a long time are prone to driver fatigue, increasing the risk of misoperation.

[0003] Therefore, row alignment aids for agricultural machinery have emerged on the market, including row alignment devices installed at the front of the machinery. The two sides of the row alignment device's force arm move forward with the machinery and fit against the crops. When the machinery deviates from the crop row, the ridge on one side squeezes the force arm, causing it to deflect. After the sensor detects the mechanical deflection of the force arm, it converts the deflection displacement into an analog electrical signal and transmits it to the encoder. The encoder transmits the processed signal to the main control system of the row alignment aid, which then controls the steering actuator to correct the machinery's deviation.

[0004] Currently, most trackers use a single-arm extension structure for their load-bearing arms, meaning the load-bearing arm is a single unit. However, interference from one side of this single-arm load-bearing arm can be directly transmitted to the other side, resulting in a "false offset" signal. For example, if the left side of the load-bearing arm touches a stone on the ridge, the right side will be passively offset to the left, causing the system to judge it as a mechanical leftward deviation, resulting in misjudgment and reducing the accuracy and stability of track alignment. Utility Model Content

[0005] The purpose of this invention is to solve the problem in the background art where interference from one side of the integral force arm is directly transmitted to the other side, causing system misjudgment. This is achieved by setting force arms on both sides of the row alignment device.

[0006] The specific technical solution of this utility model is as follows: An agricultural row alignment device includes a base, two force arms rotatably connected to the upper surface of the base, the two force arms being close to the two sides of the base respectively, a return mechanism connected to the force arms, a displacement sensor connected to the force arms, a support member installed on the upper part of the base, an encoder provided on the top of the support member, and the displacement sensor communicating with the encoder.

[0007] Furthermore, the displacement sensor is an angle sensor, which is installed on the lower surface of the support. The sensitive shaft of the angle sensor is fixedly connected to the force arm. The force arm is provided with a shaft hole that matches the sensitive shaft of the angle sensor. The angle sensor is fixedly connected to the force arm through a key connection between the sensitive shaft and the shaft hole.

[0008] Furthermore, two connecting shafts are provided opposite each other on the upper surface of the base, and the force arm is provided with a clearance hole that matches the connecting shaft. The force arm achieves a rotatable connection with the base by cooperating with the hole shaft of the connecting shaft through the clearance hole. The central axis of the clearance hole coincides with the central axis of the shaft hole.

[0009] Furthermore, the base is provided with mounting holes, and the connecting shaft is provided with through holes that are adapted to the mounting holes.

[0010] Furthermore, a first connector is vertically provided at the rear end of the base, and a second connector is vertically provided at the rear end of the support. Both connectors have threaded holes, and an adjusting bolt is provided in both threaded holes. The base and the support are fixedly connected by the adjustment bolt and the two threaded holes.

[0011] Furthermore, a limiting component is rotatably connected to the front end of the adjusting bolt. The limiting component is located between the base and the support component and is used to limit the rotation angle of the force arm.

[0012] Furthermore, the return mechanism includes a torsion spring, which is sleeved on the displacement sensor. The lower torsion arm of the torsion spring abuts against the front surface of the force-bearing arm, and the upper torsion arms of the two torsion springs are connected to each other.

[0013] Furthermore, the lower end of the torsion spring is provided with a limiting rod, which is in contact with the lower surface of the force arm.

[0014] Furthermore, the support is connected to a fixed seat, an encoder is installed on the top of the fixed seat, and a clamp is connected to the bottom of the fixed seat by fastening bolts. The fixed seat and the clamp are clamped onto the support.

[0015] Furthermore, the force-bearing arm includes a forearm, the end of which is connected to the rear arm, and there is an angle between the forearm and the rear arm, which is an obtuse angle.

[0016] Compared with the prior art, the present invention has the following beneficial effects: When in use, the rowing device is installed at the front of the agricultural machinery. The two arm-loaded arms on both sides of the rowing device monitor the rows of crops on both sides. When one arm-loaded arm is disturbed, the other arm-loaded arm can independently sense the rows of crops, assisting the control system in judging whether the agricultural machinery has deviated from the route, preventing the control system from making misjudgments, and improving the accuracy and stability of rowing. Attached Figure Description

[0017] Figure 1 This is a three-dimensional structural diagram of an embodiment of the present utility model; Figure 2 This is a three-dimensional schematic diagram of the bottom structure of an embodiment of the present utility model; Figure 3 This is an assembly drawing of the base and support components in an embodiment of this utility model; Figure 4 This is a top view of the two force arms in an embodiment of this utility model; Figure label: 1. Base; 11. Connecting shaft; 12. Mounting hole; 13. Connector 1; 2. Load-bearing arm; 21. Shaft hole; 22. Forearm; 23. Rear arm; 3. Displacement sensor; 4. Supporting components; 41. Connecting component two; 5. Encoder; 6. Adjusting bolt; 61. Limiting component; 7. Torsion spring; 71. Limiting rod; 8. Fixing base; 81. Clamping plate; 82. Fastening bolts. Detailed Implementation

[0018] To better understand the purpose, structure, and function of this utility model, the technical solutions in the embodiments of this utility model will be clearly and completely described below with reference to the accompanying drawings.

[0019] In the description of this utility model, it should be understood that the terms "upper," "lower," "left," "right," "front," "back," "top," and "bottom," etc., indicate the orientation or positional relationship based on the appendix. Figure 1 The orientations or positional relationships shown are for the convenience of describing this utility model and simplifying the description, and are not intended to indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation, and therefore should not be construed as a limitation of this utility model.

[0020] See Figures 1 to 4This embodiment discloses an agricultural row-aligning device, including a base 1. Two force-bearing arms 2 are rotatably connected to the upper surface of the base 1, located near opposite sides of the base 1. One force-bearing arm is left, and the other is right. The left and right force-bearing arms are mirror-symmetrical in shape. A return mechanism is connected to each force-bearing arm 2. When a force-bearing arm 2 is subjected to external interference and rotates, the return mechanism returns it to its original position. A displacement sensor 3 is connected to each force-bearing arm 2. A support member 4 is installed on the upper part of the base 1, and an encoder 5 is mounted on the top of the support member 4. The displacement sensor 3 is communicatively connected to the encoder 5. The force-bearing arms 2 are located on both sides of the row-aligning device and move with the machine to conform to the crop. When the machine deviates from the crop row, one side of the ridge presses against that side of the force-bearing arm 2, causing it to deflect. Meanwhile, the other side of the force-bearing arm 2 deviates from the travel path, resulting in... When a vehicle deviates from the crop row, the displacement sensor 3 detects the mechanical deflection of the two force arms 2 and converts the deflection displacement into an analog electrical signal, which is then transmitted to the encoder 5. The encoder 5 transmits the processed signal to the control system of the row alignment auxiliary device. The control system controls the steering actuator to correct the vehicle's deviation. When one side of the force arm 2 is disturbed by foreign objects such as stones, the other side of the force arm 2 will continue to move forward normally in contact with the crop and can normally detect the crop row. By comparing the signals on both sides, the control system can detect the inconsistency between the signals on both sides, determine the abnormality on one side, filter the interference, maintain the normal direction, and improve the accuracy and stability of the row alignment. This invention is an improvement on the row alignment device. The connection method and working principle of the displacement sensor 3, encoder 5 and control system are well known to those skilled in the art and can all adopt existing technical solutions, which will not be described in detail in this application.

[0021] The displacement sensor 3 is an angle sensor, which can quickly capture the rotation angle of the force arm 2 and determine the displacement of the force arm 2 by the rotation angle. The angle sensor is installed on the lower surface of the support 4, and the sensitive shaft of the angle sensor is fixedly connected to the force arm 2. The force arm 2 is provided with a shaft hole 21 that matches the sensitive shaft of the angle sensor. The angle sensor is fixedly connected to the force arm 2 by a key connection between the sensitive shaft and the shaft hole 21.

[0022] The upper surface of the base 1 is provided with two connecting shafts 11 facing each other. The force arm 2 is provided with a clearance hole that matches the connecting shaft 11. The force arm 2 is rotatably connected to the base 1 through the clearance hole and the hole shaft of the connecting shaft 11. The central axis of the clearance hole coincides with the central axis of the shaft hole 21. The rotational stability of the force arm 2 is improved by the clearance hole and the hole shaft of the connecting shaft 11, and the excessive force is prevented from causing displacement and damaging the angle sensor.

[0023] The base 1 is provided with mounting holes 12, and the connecting shaft 11 is provided with through holes that are adapted to the mounting holes 12. The base 1 can be installed on the front end of the agricultural machinery using screws.

[0024] The base 1 has a vertical connector 13 at its rear end, and the support 4 has a vertical connector 41 at its rear end. The connector 13 and the connector 41 are respectively provided with threaded holes, and the two threaded holes are equipped with an adjusting bolt 6. The base 1 and the support 4 are fixedly connected by the adjustment bolt 6 and the two threaded holes.

[0025] The front end of the adjusting bolt 6 is rotatably connected to a limiting member 61. The limiting member 61 is located between the base 1 and the support member 4. The limiting member 61 is used to limit the rotation angle of the force arm 2. When the adjusting bolt 6 is turned so that the limiting member 61 is close to the force arm 2, the rotation angle of the force arm 2 will decrease due to the obstruction of the limiting member 61. Conversely, when the limiting member 61 is far away from the force arm 2, the rotation angle of the force arm 2 will increase. This controls the rotation angle of the force arm 2 to adapt to different crops and prevents the force arm 2 from rotating too much and damaging the displacement sensor 3.

[0026] The return mechanism includes a torsion spring 7, which is sleeved on the displacement sensor 3. The lower torsion arm of the torsion spring 7 abuts against the front surface of the force-bearing arm 2. The upper torsion arms of the two torsion springs 7 are connected to each other. When the force-bearing arm 2 rotates, the force-bearing arm 2 can be returned to its original position through the torsion spring 7.

[0027] The lower end of the torsion spring 7 is provided with a limiting rod 71. The limiting rod 71 is in contact with the lower surface of the force arm 2. The limiting rod 71 hooks the force arm 2, making the position between the torsion spring 7 and the force arm 2 more stable.

[0028] The support member 4 is connected to a fixed seat 8. An encoder 5 is installed on the top of the fixed seat 8. A clamping plate 81 is connected to the bottom of the fixed seat 8 by a fastening bolt 82. The fixed seat 8 and the clamping plate 81 are clamped on the support member 4. The fixed seat 8 and the clamping plate 81 are respectively provided with internal threaded holes that match the fastening bolt 82. By tightening the fastening bolt 82, the distance between the fixed seat 8 and the clamping plate 81 can be adjusted to accommodate the support member 4. Tightening the fastening bolt 82 clamps the support member 4 between the fixed seat 8 and the clamping plate 81, and the fixed seat 8 is installed on the support member 4.

[0029] The force-bearing arm 2 includes a forearm 22, the end of which is connected to the rear arm 23. There is an angle between the forearm 22 and the rear arm 23, which is an obtuse angle. It can be further optimized that the apex of the angle formed by the forearm 22 and the rear arm 23 faces forward. This can effectively prevent the force-bearing arm 2 from scraping the crops and affecting the judgment of the control system, and can also reduce the resistance experienced by the force-bearing arm 2 and reduce the wear of the force-bearing arm 2.

[0030] Working principle: When using the row alignment device, it is installed at the front end of the agricultural machinery through the mounting holes 12 of the base 1. The position of the limiting component 61 is adjusted by turning the adjusting bolt 6, which limits the rotation angle of the load-bearing arm 2. This allows the load-bearing arms 2 on both sides of the row alignment device to monitor the rows of crops on both sides. When one load-bearing arm 2 is disturbed, the other load-bearing arm 2 can independently sense the rows of crops, assisting the control system in judging whether the agricultural machinery has deviated from the route, preventing the control system from making misjudgments, and improving the accuracy and stability of row alignment.

[0031] The above description is only a preferred embodiment of the present utility model, but the protection scope of the present utility model is not limited thereto. Any equivalent substitutions or changes made by those skilled in the art within the technical scope disclosed in the present utility model, based on the technical solution and concept of the present utility model, should be included within the protection scope of the present utility model.

Claims

1. An agricultural rowing device, characterized in that: Includes a base (1), on which two force arms (2) are rotatably connected relative to each other on the upper surface of the base (1). The two force arms (2) are respectively close to the two sides of the base (1). A return mechanism is connected to the force arms (2), and a displacement sensor (3) is connected to the force arms (2). A support (4) is installed on the upper part of the base (1), and an encoder (5) is provided on the top of the support (4). The displacement sensor (3) is connected to the encoder (5) in communication.

2. The agricultural row-crossing device according to claim 1, characterized in that, The displacement sensor (3) is an angle sensor. The angle sensor is installed on the lower surface of the support (4). The sensitive shaft of the angle sensor is fixedly connected to the force arm (2). The force arm (2) is provided with a shaft hole (21) that matches the sensitive shaft of the angle sensor. The angle sensor is fixedly connected to the force arm (2) through a key connection between the sensitive shaft and the shaft hole (21).

3. The agricultural row-crossing device according to claim 2, characterized in that, The upper surface of the base (1) is provided with two connecting shafts (11) facing each other. The force arm (2) is provided with a clearance hole that is matched with the connecting shaft (11). The force arm (2) is connected to the base (1) by the hole and shaft of the connecting shaft (11) through the clearance hole. The central axis of the clearance hole coincides with the central axis of the shaft hole (21).

4. The agricultural row-crossing device according to claim 3, characterized in that, The base (1) is provided with mounting holes (12), and the connecting shaft (11) is provided with through holes that are adapted to the mounting holes (12).

5. The agricultural row-crossing device according to claim 3, characterized in that, The base (1) has a vertical connector (13) at the rear end, and the support (4) has a vertical connector (41) at the rear end. The connector (13) and the connector (41) are respectively provided with threaded holes. The two threaded holes are equipped with an adjusting bolt (6). The base (1) and the support (4) are fixedly connected by the adjusting bolt (6) and the two threaded holes.

6. The agricultural row-crossing device according to claim 5, characterized in that, The front end of the adjusting bolt (6) is rotatably connected to a limiting member (61). The limiting member (61) is located between the base (1) and the support member (4). The limiting member (61) is used to limit the rotation angle of the force arm (2).

7. The agricultural row-crossing device according to claim 2, characterized in that, The return mechanism includes a torsion spring (7), which is sleeved on the displacement sensor (3). The lower torsion arm of the torsion spring (7) abuts against the front surface of the force arm (2), and the upper torsion arms of the two torsion springs (7) are connected to each other.

8. The agricultural row-crossing device according to claim 7, characterized in that, The lower end of the torsion spring (7) is provided with a limiting rod (71), which is in contact with the lower surface of the force arm (2).

9. The agricultural row-crossing device according to claim 1, characterized in that, The support member (4) is connected to a fixed seat (8), an encoder (5) is installed on the top of the fixed seat (8), and a clamp (81) is connected to the bottom of the fixed seat (8) by a fastening bolt (82). The fixed seat (8) and the clamp (81) are clamped together on the support member (4).

10. The agricultural row-crossing device according to claim 1, characterized in that, The force-bearing arm (2) includes a forearm (22), the end of which is connected to the rear arm (23). There is an angle between the forearm (22) and the rear arm (23), and the angle is an obtuse angle.

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