Automatic calibration device for grain unloading barrel support position of harvesting machine

Abstract

The utility model belongs to the technical field of grain unloading cylinder return, and particularly relates to an automatic calibration device for a grain unloading cylinder support position of a harvesting machine, which comprises a grain unloading cylinder rotating motor, a grain unloading cylinder height position sensor, a grain unloading cylinder support in-place proximity switch and a grain unloading controller, an encoder signal output end of the grain unloading barrel rotating motor is connected to the grain unloading controller and used for detecting the position of the grain unloading barrel in the horizontal direction in real time, the grain unloading barrel height position sensor is used for detecting the real-time position of the grain unloading barrel in the vertical direction, and the height position sensor is in communication connection with the grain unloading controller through a CAN bus. The grain unloading barrel support in-place proximity switch is used for detecting whether the grain unloading barrel is located at the support position or not. According to the utility model, the calibration method is flexible and convenient, manual operation of a driver is not needed, the failure rate is reduced, and compared with the original operation, the calibration device is more convenient, low in cost, less in modification, high in efficiency and wider in coverage range.

Description

Technical Field

[0001] This utility model belongs to the field of grain unloading hopper return technology, specifically relating to an automatic calibration device for the position of a grain unloading hopper support in harvesting machinery. Background Technology

[0002] With the rapid development of agricultural mechanization, the level of intelligence of harvesting machinery has become a key factor in improving agricultural production efficiency. Among them, the accurate calibration of the unloading hopper support position is crucial. As a key component in the unloading process of harvesting machinery, the accurate calibration of the unloading hopper support position directly affects the continuity and efficiency of unloading operations. If the unloading hopper cannot be accurately returned to the support, it will not only prolong the unloading auxiliary time, but may also cause collision damage to equipment parts, reduce operating efficiency, and increase maintenance costs.

[0003] Currently, the automatic calibration device and calibration method for the zero position of the unloading hopper of a harvester proposed in patent authorization announcement number CN115349349B has solved the automation problem of zero position calibration of the unloading hopper to a certain extent. This prior art achieves automatic calibration of the zero position of the unloading hopper by working together with specific position detection sensors and pressure sensors. Compared with the traditional manual calibration method, it has made significant progress, improved calibration efficiency, and reduced the operator's workload.

[0004] However, this existing technology still has some limitations. On the one hand, its application scenarios are relatively limited, mainly for calibrating the zero position of the unloading hopper of harvesters. It is difficult to directly apply it to other harvesting machinery with unloading hoppers, such as silage harvesters. Different types of harvesting machinery have differences in structural design and unloading operation processes, and the existing technology cannot meet the diverse needs of agricultural production. On the other hand, the existing technology is not accurate enough in judging the position of the support and selecting the calibration timing. In the actual complex agricultural operation environment, such as field bumps and material residue affecting the sensor detection accuracy, misjudgments are prone to occur, leading to unnecessary repeated calibration, wasting time and equipment resources, and affecting the overall progress of the harvesting operation.

[0005] Furthermore, existing technologies need improvement in terms of equipment modification and ease of operation. The calibration device may require significant modifications to the original mechanical transmission structure of the harvesting machinery, which not only increases modification costs but may also affect the original stability and reliability of the machinery. Moreover, during operation, the driver may still need to perform some auxiliary operations or monitoring, thus failing to achieve true automation and convenience.

[0006] Therefore, it is necessary to propose a new type of automatic calibration device for the unloading hopper support position. Utility Model Content

[0007] The purpose of this invention is to provide an automatic calibration device for the unloading hopper support position of harvesting machinery. This device offers a flexible and convenient calibration method, eliminates the need for manual operation by the driver, reduces the failure rate, and is more convenient, cost-effective, requires fewer modifications, is more efficient, and has a wider coverage compared to the original operation.

[0008] The specific technical solution adopted by this utility model is as follows:

[0009] An automatic calibration device for the position of a grain unloading hopper support of a harvesting machine includes a grain unloading hopper rotary motor, a grain unloading hopper height position sensor, a grain unloading hopper support in-position proximity switch, and a grain unloading controller.

[0010] The unloading drum rotary motor is used to control the left and right rotation of the unloading drum. The encoder signal output terminal of the unloading drum rotary motor is connected to the unloading controller to detect the horizontal position of the unloading drum in real time.

[0011] The unloading cylinder height position sensor is used to detect the real-time vertical position of the unloading cylinder. The height position sensor is connected to the unloading controller via a CAN bus.

[0012] The unloading drum support proximity switch is used to detect whether the unloading drum is in the support position, and the detection signal output terminal of the unloading drum support proximity switch is connected to the unloading controller.

[0013] The unloading controller is used to receive the encoder signal, the unloading cylinder height position sensor data and the unloading cylinder support in-position proximity switch signal, determine whether the unloading cylinder meets the support position calibration conditions, and record and save the horizontal and vertical position data of the unloading cylinder support position.

[0014] It also includes a grain unloading control panel, which is used to control the lifting, left and right rotation, rotation out and return actions of the grain unloading cylinder.

[0015] The unloading drum rotary motor feeds back the horizontal rotation angle of the unloading drum to the unloading controller in real time through an encoder. The unloading controller determines the horizontal position of the unloading drum based on the rotation angle data.

[0016] The unloading hopper height position sensor is a linear displacement sensor, which obtains the vertical position data of the unloading hopper by detecting the displacement of the unloading hopper.

[0017] The proximity switch for the unloading drum support is an inductive proximity switch, which is installed at a preset position on the unloading drum support to detect whether the unloading drum has accurately fallen onto the support.

[0018] The unloading controller integrates a CAN bus transceiver module, which communicates with the height position sensor of the unloading cylinder via CANH and CANL signal lines to acquire vertical position data in real time.

[0019] The technical effects achieved by this utility model are as follows:

[0020] This invention achieves automatic calibration by combining a proximity switch for the unloading hopper support in place, a height and position sensor for the unloading hopper, and a rotary motor for the unloading hopper. The calibration method is flexible and convenient, requiring no manual operation from the driver, thus reducing the failure rate. It eliminates the need for modifications to the mechanical transmission structure of the harvester, making it more convenient, cost-effective, and efficient compared to previous methods. It has a wider range of applications and can be used in harvesting machinery with unloading hoppers, including combine harvesters and silage harvesters. This invention's calibration method differs from existing patented technologies, providing more accurate judgment of the support's position and more precise calibration timing, reducing unnecessary repetitive calibration attempts. Attached Figure Description

[0021] Figure 1 This is a system diagram of the entire utility model;

[0022] Figure 2 This is a flowchart of the automatic calibration process of this utility model. Detailed Implementation

[0023] To make the objectives and advantages of this utility model clearer, the following detailed description is provided in conjunction with embodiments. It should be understood that the following text is merely used to describe one or more specific embodiments of this utility model and does not strictly limit the scope of protection specifically claimed by this utility model.

[0024] like Figures 1-2 As shown, an automatic calibration device for the position of a grain unloading hopper support of a harvesting machine includes a grain unloading hopper rotary motor, a grain unloading hopper height position sensor, a grain unloading hopper support in-position proximity switch, and a grain unloading controller.

[0025] The unloading drum rotary motor is used to control the left and right rotation of the unloading drum. The encoder signal output terminal of the unloading drum rotary motor is connected to the unloading controller to detect the horizontal position of the unloading drum in real time. The unloading drum rotary motor can be installed on the frame of the harvesting machinery. The output shaft is connected to the horizontal rotating base of the unloading drum to drive the unloading drum to rotate left and right.

[0026] See attached document Figure 1 The unloading hopper's rotary motor sends real-time feedback of the hopper's horizontal rotation angle to the unloading controller via an encoder. The unloading controller determines the hopper's horizontal position based on this rotation angle data. The encoder's signal output is directly connected to the unloading controller's pulse signal input port via a dedicated signal line. As the encoder rotates with the motor, it outputs pulse signals in real-time to calculate the hopper's horizontal rotation angle.

[0027] The unloading hopper height position sensor is used to detect the real-time vertical position of the unloading hopper. The height position sensor is connected to the unloading controller via a CAN bus. According to the above structure, the unloading hopper height position sensor is a linear displacement sensor. It obtains the vertical position data of the unloading hopper by detecting the displacement of the unloading hopper. It can be installed on the lifting mechanism of the unloading hopper (such as a hydraulic cylinder or electric push rod). The movable end of the unloading hopper height position sensor is rigidly connected to the vertical lifting component of the unloading hopper and moves synchronously with the lifting of the unloading hopper.

[0028] The unloading drum support proximity switch is used to detect whether the unloading drum is in the support position. The detection signal output terminal of the unloading drum support proximity switch is connected to the unloading controller. Furthermore, the unloading drum support proximity switch can be an inductive proximity switch, which is installed at a preset position on the unloading drum support to detect whether the unloading drum has accurately fallen onto the support.

[0029] The unloading controller is used to receive encoder signals, unloading hopper height position sensor data and unloading hopper support position proximity switch signals, determine whether the unloading hopper meets the support position calibration conditions, and record and save the horizontal and vertical position data of the unloading hopper support.

[0030] This unloading controller can use a microcontroller-based control module, integrating a CAN bus transceiver, a pulse signal counter, and a digital input / output interface. It receives pulse signals from the rotary motor encoder via the pulse signal counter to calculate the horizontal rotation angle of the unloading hopper; it reads the vertical position data from the height position sensor in real time via the CAN bus transceiver and acquires the presence signal of the proximity switch via the digital input port. The unloading controller integrates a CAN bus transceiver module, which communicates with the height position sensor of the unloading hopper via CANH and CANL signal lines to obtain vertical position data in real time.

[0031] See attached document Figure 1 It also includes a grain unloading operation panel, which is used to control the lifting, left and right rotation, rotation out and return actions of the grain unloading hopper. The grain unloading operation panel is set in the driver's cab and integrates lifting buttons, left and right rotation buttons, "one-key rotation out" button and "one-key return" button. Each button is connected to the relay drive module of the grain unloading controller through wires to realize the control of the grain unloading hopper's actions.

[0032] See attached document Figure 2 When the unloading drum support detection switch signal goes from zero to positive, and the vertical position of the unloading drum is within the set height range, the unloading controller will allow automatic calibration. During automatic calibration, the unloading controller saves the vertical and horizontal positions and calibrates them as the unloading drum support position.

[0033] The automatic calibration process is as follows:

[0034] S1: The unloading hopper returns to its support position;

[0035] When the driver presses the "one-key return" button on the control panel, the unloading controller drives the unloading drum rotary motor and lifting mechanism to move the unloading drum to the support position. When the bottom positioning component of the unloading drum contacts the support, the unloading drum support in position proximity switch detection signal is valid.

[0036] S2: Vertical position verification;

[0037] The unloading controller reads the current value of the unloading hopper height position sensor in real time and determines whether it meets the preset height range. If the current value is outside the range, the on-line signal is ignored and calibration is not performed; if the current value is within the range, it enters S3.

[0038] S3: Record and save stent placement data;

[0039] In the horizontal position, the controller reads the current pulse count from the encoder on the unloading drum's rotary motor and converts it into a horizontal rotation angle;

[0040] In the vertical position, the real-time detection value of the unloading hopper height position sensor is directly used;

[0041] After the horizontal and vertical positions are recorded, the unloading controller uses these positions as calibration data for the support position and stores them in the unloading controller.

[0042] This application completes the automatic calibration logic by combining the unloading drum support proximity switch, the unloading drum height position sensor and the unloading drum rotary motor. The calibration method is flexible and convenient, does not require manual operation by the driver, reduces the failure rate, and does not require any changes to the mechanical transmission structure on the original structure. Compared with the original operation, it is more convenient, less costly, requires less modification and is more efficient.

[0043] The above description is merely a preferred embodiment of this utility model. It should be noted that those skilled in the art can make various improvements and modifications without departing from the principle of this utility model, and these improvements and modifications should also be considered within the scope of protection of this utility model. Structures, devices, and operating methods not specifically described or explained in this utility model, unless otherwise specified or limited, shall be implemented using conventional methods in the field.

Claims

1. A device for automatic calibration of unloading cylinder support positions of a harvesting machine, characterized in that: This includes a grain unloading drum rotary motor, a grain unloading drum height and position sensor, a grain unloading drum support proximity switch, and a grain unloading controller; The unloading drum rotary motor is used to control the left and right rotation of the unloading drum. The encoder signal output terminal of the unloading drum rotary motor is connected to the unloading controller to detect the horizontal position of the unloading drum in real time. The unloading cylinder height position sensor is used to detect the real-time vertical position of the unloading cylinder. The height position sensor is connected to the unloading controller via a CAN bus. The unloading drum support proximity switch is used to detect whether the unloading drum is in the support position, and the detection signal output terminal of the unloading drum support proximity switch is connected to the unloading controller. The unloading controller is used to receive the encoder signal, the unloading cylinder height position sensor data and the unloading cylinder support in-position proximity switch signal, determine whether the unloading cylinder meets the support position calibration conditions, and record and save the horizontal and vertical position data of the unloading cylinder support position.

2. The automatic calibration device for the unloading cylinder support position of a harvesting machine according to claim 1, characterized in that: It also includes a grain unloading control panel, which is used to control the lifting, left and right rotation, rotation out and return actions of the grain unloading cylinder.

3. The automatic calibration device for the unloading cylinder support position of a harvesting machine according to claim 1, characterized in that: The unloading drum rotary motor feeds back the horizontal rotation angle of the unloading drum to the unloading controller in real time through an encoder. The unloading controller determines the horizontal position of the unloading drum based on the rotation angle data.

4. The automatic calibration device for the unloading cylinder support position of a harvesting machine according to claim 1, characterized in that: The unloading hopper height position sensor is a linear displacement sensor, which obtains the vertical position data of the unloading hopper by detecting the displacement of the unloading hopper.

5. The automatic calibration device for the unloading cylinder support position of a harvesting machine according to claim 1, characterized in that: The proximity switch for the unloading drum support is an inductive proximity switch, which is installed at a preset position on the unloading drum support to detect whether the unloading drum has accurately fallen onto the support.

6. The automatic calibration device for the unloading cylinder support position of a harvesting machine according to claim 1, characterized in that: The unloading controller integrates a CAN bus transceiver module, which communicates with the height position sensor of the unloading cylinder via CANH and CANL signal lines to acquire vertical position data in real time.

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