CN203563346U - Profiling control system of harvest platform - Google Patents

Abstract

The utility model discloses a profiling control system for a harvesting table, which comprises a profiling rod and an angle sensor installed on a frame, one end of the profiling rod is movably installed on the angle sensor, and the other end of the profiling rod hangs down on the ground through its own weight , and is connected with the profiling rod at the movable connection end of the angle sensor and the hydraulic system, and both the hydraulic system and the angle sensor are connected with the controller. The system can be installed on the existing harvester. When the ground fluctuates, the profiling rod rotates around the angle sensor. The rotation amount is converted into a voltage or digital signal by the angle sensor and transmitted to the programming controller. The range of signal changes determines whether self-profiling action is required. When action is required, the programming controller will control the electromagnetic reversing valve, and the electromagnetic reversing valve will control the expansion and contraction of the hydraulic cylinder, so as to realize the automatic profiling control of the harvesting table ground.

Description

Harvesting table profiling control system

technical field

The utility model relates to an agricultural machine, in particular to a profiling control system for a harvesting platform.

Background technique

At present, with the rapid development of my country's modern agriculture, the country's vigorous promotion and subsidies for agricultural machinery, my country's agricultural mechanization level has been greatly developed. According to incomplete statistics from relevant departments, as of the end of 2011, the social ownership of various combine harvesters in my country The quantity has exceeded 1.1 million units, including 600,000 wheat combine harvesters, nearly 300,000 corn combine harvesters, and nearly 200,000 rice and other crop harvesters, and the number is increasing at a rate of more than 200,000 units every year. At present, the technology of grain harvester is relatively mature, and one of the signs of a mature market is that with the increase of farmers' income and improvement of agronomy, users have higher and higher requirements for the comfort, reliability and function of the machine. Therefore, manufacturers need to continuously innovate and improve, and come up with characteristic products with core competitiveness to meet the increasing needs of users. According to the survey, many harvester users said that when the combine harvester is working in the field, the driver should drive the machine carefully on the one hand, and pay close attention to the stubble cutting height, feeding amount, threshing, grain cleaning and the working conditions of the engine on the other hand. , This not only easily fatigues the machine operator, but also often affects the full play of the combine harvester's working efficiency. Therefore, the research and development of the profiling control system of the harvester and the improvement of the self-adaptive technology and automation of the harvester will improve the comfort of the machine, reduce the labor intensity of the operator, and meet the increasing needs of users. The intellectualization of all has a positive role in promoting.

The main technical problems currently existing in my country's grain combine harvester are:

(1) Domestic combine harvesters are mostly in a locked state when they are working, and cannot automatically adjust the ground clearance with changes in the terrain, resulting in uneven stubble heights, front-end digging into the soil, and missed harvests.

(2) When the harvesting platform of the domestic combine harvester is operating, if the ground level fluctuates greatly, the lifting of the harvesting platform is mainly controlled manually. The continuous operation intensity of the operator is high, the control accuracy is low, the hysteresis is large, and the effect is not good.

Chinese patent ZL200420009327 discloses a Suaaa salsa self-propelled combine harvester, which discloses: the harvester frame is provided with a header profiling control device, and the profiling control device includes a sensor, a telescopic rod, a lifting cylinder and a solenoid valve, One end of the telescopic rod is connected with the sensor, and the sensor is connected with the solenoid valve, and the solenoid valve controls the on-off of the oil delivery conduit connected with the lifting oil cylinder. However, the force direction of the profiling telescopic rod of this patent is perpendicular to the telescopic direction, which is prone to jamming and damage. The sensor is a linear displacement sensor with poor dustproof effect and is susceptible to interference. the

Contents of the invention

The purpose of this utility model is to overcome the above-mentioned deficiencies in the prior art, and provide a profiling control system for a harvesting table. The reversing valve and controller realize the automatic copying operation of the harvesting table.

In order to achieve the above object, the utility model adopts the following technical solutions:

A harvesting table profiling control system, including a profiling rod and an angle sensor installed on the frame, one end of the profiling rod is movably installed on the angle sensor, the other end of the profiling rod hangs down on the ground by its own weight, and is connected to the angle sensor The profiling rod at the movable connection end is connected with the hydraulic system, and both the hydraulic system and the angle sensor are connected with the controller.

The section of the profiling rod that hangs down on the ground is tilted upwards.

The hydraulic system is installed on the frame, and the hydraulic system includes an electromagnetic reversing valve and a hydraulic cylinder. One end of the hydraulic rod of the hydraulic cylinder is connected with the profiling rod, and the electromagnetic reversing valve controls the hydraulic cylinder, and the electromagnetic reversing valve is connected with the controller. .

The controller is a programming controller.

The beneficial effect of the utility model is that the profiling sensing device is composed of a profiling rod and an angle sensor, one end of the profiling rod hangs down on the ground by its own weight, and the other end is connected with the angle sensor and can rotate around the connection; the hydraulic system mainly consists of It is composed of electromagnetic reversing valve and hydraulic cylinder; the programming controller plays the main control role in this system. The system can be installed on the existing harvester. When the ground fluctuates, the profiling rod rotates around the angle sensor. The rotation amount is converted into a voltage or digital signal by the angle sensor and transmitted to the programming controller. The range of signal changes determines whether self-profiling action is required. When action is required, the programming controller will control the electromagnetic reversing valve, and the electromagnetic reversing valve will control the expansion and contraction of the hydraulic cylinder, so as to realize the automatic profiling control of the harvesting table ground. The profiling rod of the utility model is installed in rotation around the rotating shaft of the sensor, and is not easy to be damaged after being stressed. The utility model has the advantages of simple structure, convenient maintenance and small overall size, and can be installed at the tip guard at the front end of the harvesting platform. Compared with the prior art, the utility model has a fast response to terrain changes and a good profiling effect. The utility model adopts a rotation angle sensor, and the overall structure of the angle sensor is small, dust-proof, waterproof and shock-resistant, and is not easily disturbed.

Description of drawings

Fig. 1 is a structural representation of the utility model;

Fig. 2 is a structural schematic diagram of a profiling rod and an angle sensor;

Wherein 1-profiling sensing device, 2-hydraulic cylinder, 3-programming controller, 4-electromagnetic reversing valve, 5-angle sensor, 6-profiling rod. the

Detailed ways

Below in conjunction with accompanying drawing and embodiment the utility model is further described.

The utility model is mainly composed of a profiling sensing device 1, a hydraulic cylinder 2, a controller 3 and an electromagnetic reversing valve 4.

The profiling sensing device 1 is composed of a profiling rod 6 and an angle sensor 5. One end of the profiling rod 6 hangs down on the ground by its own weight, and the other end is connected to the angle sensor 5 and can rotate around the joint; the hydraulic system is mainly composed of electromagnetic commutation The valve 4 and the hydraulic cylinder 2 are composed; the programming controller 3 plays the main control role in the system. The system can be installed on the existing harvester. When the ground has ups and downs, the profiling rod 6 rotates around the angle sensor 5, and the rotation amount is converted into a voltage or digital signal by the angle sensor 5 and transmitted to the programming controller 3 for programming control. The device 3 judges whether the self-profiling action is required according to the range of the received signal. When the action is required, the programming controller 3 will control the electromagnetic reversing valve 4, and the electromagnetic reversing valve 4 will control the expansion and contraction of the hydraulic cylinder 2, so as to realize the automatic harvesting platform. Profile control.

Although the specific implementation of the utility model has been described above in conjunction with the accompanying drawings, it does not limit the protection scope of the utility model. Those skilled in the art should understand that on the basis of the technical solution of the utility model, those skilled in the art do not need to Various modifications or deformations that can be made with creative efforts are still within the protection scope of the present utility model.

Claims (4)

1. a harvesting-platform contour control system, it is characterized in that, comprise profiling bar and be installed on the angular transducer in frame, profiling bar one end is movably installed on angular transducer, the profiling bar other end hangs on the ground by deadweight, and the profiling bar that is flexibly connected end with angular transducer is connected with hydraulic system, and hydraulic system is all connected with controller with angular transducer.

2. harvesting-platform contour control system as claimed in claim 1, is characterized in that, that section that described profiling bar hangs is on the ground upturned.

3. harvesting-platform contour control system as claimed in claim 1, it is characterized in that, described hydraulic system is installed in frame, hydraulic system comprises solenoid directional control valve and hydraulic cylinder, hydraulic stem one end of hydraulic cylinder is connected with profiling bar, and solenoid directional control valve control hydraulic cylinder, solenoid directional control valve is connected with controller.

4. harvesting-platform contour control system as claimed in claim 1, is characterized in that, described controller is programmable controller.

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