阅读说明：本技术 一种采棉机打包皮带控制系统及采棉机打包皮带控制方法 (Cotton picker packing belt control system and cotton picker packing belt control method ) 是由 肖敏 王俊杰 肖前龙 戴明慧 全永统 王平 曲建华 于 2021-07-22 设计创作，主要内容包括：本发明公开了一种采棉机打包皮带控制系统及采棉机打包皮带控制方法,包括：摇臂油缸,其活塞杆连接摇臂,摇臂与打包皮带相连；第一液压油路,其与摇臂油缸的有杆腔相连,第一液压油路设有电比例阀,电比例阀分别连接用于供应液压油的液压源和回油箱；第二液压油路,其分别与所述摇臂油缸的无杆腔和回油箱相连；控制器,其与电比例阀电连接,控制器用于接收棉包大小的信号,并根据棉包大小的信号以及棉包大小与有杆腔的压力值之间的预设对应关系,控制调节电比例阀的开度。通过调节电比例阀的开度,实现对打包皮带张紧力的实时调节,使打包皮带的张紧力与棉包大小相对应,使棉包各处的压实度均匀一致,提升了打包质量。(The invention discloses a cotton picker packing belt control system and a cotton picker packing belt control method, which comprise the following steps: a piston rod of the rocker arm oil cylinder is connected with a rocker arm, and the rocker arm is connected with the packing belt; the first hydraulic oil path is connected with a rod cavity of the rocker arm oil cylinder and is provided with an electro proportional valve, and the electro proportional valve is respectively connected with a hydraulic source for supplying hydraulic oil and an oil return tank; the second hydraulic oil path is respectively connected with the rodless cavity of the rocker arm oil cylinder and the oil return tank; and the controller is electrically connected with the electric proportional valve and is used for receiving the cotton bale size signal and controlling and adjusting the opening of the electric proportional valve according to the cotton bale size signal and the preset corresponding relation between the cotton bale size and the pressure value of the rod cavity. Through adjusting the aperture of the electric proportional valve, the real-time adjustment of the tension of the packing belt is realized, the tension of the packing belt corresponds to the size of the cotton bale, the compaction degree of each cotton bale is uniform, and the packing quality is improved.)

1. The utility model provides a cotton picker packing belt control system which characterized in that includes:

the piston rod of the rocker arm oil cylinder (1) is connected with the rocker arm (2), and the rocker arm (2) is connected with the packing belt (3);

the first hydraulic oil path (4) is connected with a rod cavity of the rocker arm oil cylinder (1), the first hydraulic oil path (4) is provided with an electro-proportional valve (5), and the electro-proportional valve (5) is respectively connected with a hydraulic source for supplying hydraulic oil and an oil return tank;

the second hydraulic oil circuit (6) is respectively connected with the rodless cavity of the rocker arm oil cylinder (1) and the oil return tank;

the controller is electrically connected with the electric proportional valve (5) and used for receiving the size signal of the cotton bale (14) and controlling and adjusting the opening of the electric proportional valve (5) according to the size signal of the cotton bale (14) and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity.

2. The cotton picker packing belt control system according to claim 1, further comprising a pressure sensor (7) for detecting the pressure value of the rod chamber, and connected with the controller, so that the controller corrects the opening degree of the electro proportional valve (5) in real time according to the detection value of the pressure sensor (7).

3. The cotton picker packing belt control system according to claim 1 or 2, wherein the second hydraulic oil circuit (6) is provided with a first electromagnetic directional valve (8) for controlling oil inlet and oil return of the rodless cavity, and the first electromagnetic directional valve (8) is respectively connected with the hydraulic source and the oil return tank; the first electromagnetic directional valve (8) is electrically connected with the controller, so that the controller controls the first electromagnetic directional valve (8) to change direction.

4. The cotton picker packing belt control system according to claim 3, wherein the first hydraulic oil path (4) is provided with a hydraulic control one-way valve (9), and a liquid outlet of the hydraulic control one-way valve (9) is communicated with the rod cavity; alternatively, the first hydraulic oil passage (4) is provided with a balance valve with pilot control.

5. The cotton picker packing belt control system according to claim 4, wherein the second hydraulic oil circuit (6) is provided with a second electromagnetic directional valve (10) for controlling oil inlet and oil return of the rodless cavity, the second electromagnetic directional valve is arranged in series with the first electromagnetic directional valve (8), and one of the work stations of the second electromagnetic directional valve (10) has a one-way stopping function so as to maintain the oil pressure in the rodless cavity.

6. The cotton picker packing belt control system according to claim 1, wherein the electro proportional valve (5) is an electro proportional pressure reducing relief valve.

7. The cotton picker packing belt control system according to claim 1, wherein an overflow valve (11) is connected between the first hydraulic oil circuit (4) and the return tank.

8. A cotton picker packing belt control method applied to the controller of the cotton picker packing belt control system according to any one of claims 1 to 7, comprising:

acquiring the size of the cotton bale;

and controlling and adjusting the opening of the electric proportional valve of the cotton picker packing belt control system according to the size of the cotton bale and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity of the cotton picker packing belt control system.

9. The cotton picker packing belt control method according to claim 8, further comprising:

when the cotton bale reaches the maximum and is thrown out, the electric proportional valve is controlled to be in the maximum opening degree, so that the piston rod of the rocker arm oil cylinder retracts fast, and after the piston rod retracts to the target position, the opening degree of the electric proportional valve is controlled, and the pressure value in the rod cavity meets the tension force requirement when the baling belt is not baled.

Technical Field

The invention relates to the technical field of agricultural machinery, in particular to a packing belt control system of a cotton picker. In addition, the invention also relates to a cotton picker packing belt control method applied to the cotton picker packing belt control system.

Background

With the development of agricultural machinery technology, cotton pickers gradually become indispensable agricultural machinery equipment for cotton picking, and the cotton pickers have the advantages of high cotton picking efficiency, labor cost saving, labor intensity reduction and the like.

The cotton is loaded into the cotton box after being picked, however, the cotton can be quickly filled in the cotton box along with the picking process because the space in the cotton box is limited and the cotton is soft, and the cotton in the cotton box needs to be poured out so as to continue the operation. In order to improve the working efficiency and reduce the cotton unloading time, a packing device is generally adopted to pack cotton in a cotton box, when the cotton bale in the cotton box is packed from a small cotton bale to a maximum cotton bale, a film covering system of the cotton picker is utilized to complete the wrapping of the cotton bale, and then a rear box body of the cotton box is opened to throw out the cotton bale.

However, in the prior art, the tension of the packing belt of the packing device cannot be adjusted in real time, so that the compaction degree of each cotton bale is inconsistent, the cotton bale is easy to deform or fails to be packed, and the cotton packing quality is directly influenced.

Therefore, how to provide a packing belt control system of a cotton picker to realize real-time adjustment of the tension of a packing belt and improve packing quality and reliability is a problem to be solved urgently by technical personnel in the field at present.

Disclosure of Invention

In view of the above, the present invention provides a control system for a packing belt of a cotton picker, which can realize real-time adjustment of the tension of the packing belt, and improve packing quality and reliability.

The invention also aims to provide a cotton picker packing belt control method applied to the cotton picker packing belt control system, which can realize real-time adjustment of the tension of a packing belt and improve the packing quality and reliability.

In order to achieve the above purpose, the invention provides the following technical scheme:

a cotton picker packing belt control system comprising:

a piston rod of the rocker arm oil cylinder is connected with a rocker arm, and the rocker arm is connected with a packing belt;

the first hydraulic oil path is connected with a rod cavity of the rocker arm oil cylinder and is provided with an electro-proportional valve, and the electro-proportional valve is respectively connected with a hydraulic source for supplying hydraulic oil and an oil return tank;

the second hydraulic oil path is respectively connected with the rodless cavity of the rocker arm oil cylinder and the oil return tank;

the controller is electrically connected with the electric proportional valve and used for receiving the cotton bale size signal and controlling and adjusting the opening of the electric proportional valve according to the cotton bale size signal and the preset corresponding relation between the cotton bale size and the pressure value of the rod cavity.

Preferably, the device further comprises a pressure sensor for detecting the pressure value of the rod cavity, and the pressure sensor is connected with the controller, so that the controller corrects the opening degree of the electro proportional valve in real time according to the detection value of the pressure sensor.

Preferably, the second hydraulic oil path is provided with a first electromagnetic directional valve for controlling oil inlet and oil return of the rodless cavity, and the first electromagnetic directional valve is respectively connected with the hydraulic source and the oil return tank; the first electromagnetic directional valve is electrically connected with the controller, so that the controller controls the first electromagnetic directional valve to change direction.

Preferably, the first hydraulic oil path is provided with a hydraulic control one-way valve, and a liquid outlet of the hydraulic control one-way valve is communicated with the rod cavity; alternatively, the first hydraulic line is provided with a balance valve with pilot control.

Preferably, the second hydraulic oil path is provided with a second electromagnetic directional valve for controlling oil inlet and oil return of the rodless cavity, the second electromagnetic directional valve is connected with the first electromagnetic directional valve in series, and one station of the second electromagnetic directional valve has a one-way stop function so as to maintain the oil pressure in the rodless cavity.

Preferably, the electric proportional valve is an electric proportional pressure reducing overflow valve.

Preferably, an overflow valve is connected between the first hydraulic oil path and the oil return tank.

A cotton picker packing belt control method is applied to the controller of any one of the cotton picker packing belt control systems, and comprises the following steps:

acquiring the size of the cotton bale;

and controlling and adjusting the opening of the electric proportional valve of the cotton picker packing belt control system according to the size of the cotton bale and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity of the cotton picker packing belt control system.

Preferably, the method further comprises the following steps:

when the cotton bale reaches the maximum and is thrown out, the electric proportional valve is controlled to be in the maximum opening degree, so that the piston rod of the rocker arm oil cylinder retracts fast, and after the piston rod retracts to the target position, the opening degree of the electric proportional valve is controlled, and the pressure value in the rod cavity meets the tension force requirement when the baling belt is not baled.

According to the cotton picker packing belt control system provided by the invention, in the cotton packing process, the actual size of the cotton bale is obtained in real time by using the controller, and the current of the electro-proportional valve is controlled according to the actual size of the cotton bale and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity, so that the opening degree of the electro-proportional valve is changed, the pressure value of the rod cavity is adjusted, the pressure value of the rod cavity corresponds to the actual size of the cotton bale, and the real-time adjustment of the pressure value of the rod cavity is realized. Because the rocker arm is connected with the piston rod of the rocker arm oil cylinder, the packing belt is connected with the rocker arm, and therefore when the pressure in the rod cavity generates retraction force on the piston rod, the packing belt is tensioned through the force transmission effect of the rocker arm, and the purpose of adjusting the tension force of the packing belt can be achieved through adjusting the opening degree of the electric proportional valve.

The cotton picker packing belt control method provided by the invention is applied to the cotton picker packing belt control system and has the beneficial effects.

Drawings

In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings used in the description of the embodiments or the prior art will be briefly described below, it is obvious that the drawings in the following description are only embodiments of the present invention, and for those skilled in the art, other drawings can be obtained according to the provided drawings without creative efforts.

FIG. 1 is a hydraulic schematic diagram of a cotton picker packing belt control system according to an embodiment of the present invention;

FIG. 2 is a schematic view of the bale picker in an unpacked state;

FIG. 3 is a schematic view of the cotton picker just beginning to pack;

FIG. 4 is a schematic view of the cotton picker at the completion of baling;

fig. 5 is a schematic view of the cotton picker in a state where the rear box is opened to eject the baled cotton bale.

The reference numerals in fig. 1 to 5 are as follows:

the hydraulic control device comprises a rocker arm oil cylinder 1, a rocker arm 2, a packing belt 3, a first hydraulic oil way 4, an electric proportional valve 5, a second hydraulic oil way 6, a pressure sensor 7, a first electromagnetic directional valve 8, a hydraulic control one-way valve 9, a second electromagnetic directional valve 10, an overflow valve 11, a front box 12, a rear box 13 and a cotton bale 14.

Detailed Description

The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.

The core of the invention is to provide a packing belt control system of a cotton picker, which can realize real-time adjustment of the tension of a packing belt 3 and improve the packing quality and reliability. The other core of the invention is to provide the cotton picker packing belt control method applied to the cotton picker packing belt control system, which can realize real-time adjustment of the tension of the packing belt 3 and improve the packing quality and reliability.

Referring to fig. 1-5, fig. 1 is a hydraulic schematic diagram of a cotton picker packing belt control system according to an embodiment of the present invention; FIG. 2 is a schematic view of the bale picker in an unpacked state; FIG. 3 is a schematic view of the cotton picker just beginning to pack; FIG. 4 is a schematic view of the cotton picker at the completion of baling;

fig. 5 is a schematic view of the cotton picker in a state where the rear box is opened to eject the baled cotton bale.

The invention provides a packing belt control system of a cotton picker, which comprises a rocker arm cylinder 1, a rocker arm 2, a packing belt 3, a first hydraulic oil path 4, a second hydraulic oil path 6, an electric proportional valve 5 and a controller.

Specifically, the swing arm 2 is connected to a piston rod of the swing arm cylinder 1, and at the same time, the swing arm 2 is connected to the packing belt 3. A rod cavity of the rocker arm oil cylinder 1 is connected with a first hydraulic oil path 4, the first hydraulic oil path 4 is provided with an electro-proportional valve 5, and the electro-proportional valve 5 is respectively connected with a hydraulic source and an oil return tank; the rodless cavity of the rocker arm cylinder 1 is connected with a second hydraulic oil path 6, the second hydraulic oil path 6 is connected with an oil return tank, namely, the rodless cavity of the rocker arm cylinder 1 is communicated with the oil return tank through the second hydraulic oil path 6. It will be appreciated that the hydraulic source is for providing hydraulic oil, and as shown in fig. 1, the hydraulic source is provided with a hydraulic pump, by means of which hydraulic oil with a certain pressure is provided. As the name implies, the oil return tank is used for the hydraulic oil to flow back into the oil return tank.

More importantly, the electric proportional valve 5 is electrically connected with the controller, the controller is used for receiving a signal of the size of the cotton bale 14 and controlling and adjusting the opening of the electric proportional valve 5 according to the signal of the size of the cotton bale 14 and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity, and therefore the purpose of adjusting the pressure of the rod cavity of the rocker oil cylinder 1 is achieved. Because rocking arm 2 links to each other with the piston rod of rocking arm hydro-cylinder 1, packing belt 3 links to each other with rocking arm 2, consequently, when the pressure in the pole intracavity produced the power that contracts to the piston rod, through the power transmission effect of rocking arm 2, makes packing belt 3 tensioning to through the aperture of adjusting electro proportional valve 5, can reach the purpose of adjusting the 3 tensile forces of packing belt.

As shown in fig. 2-5, is a schematic diagram of the bale making process at a cotton picker. The cotton box comprises a front box body 12 and a rear box body 13, wherein the position of the front box body 12 is fixed, the rear box body 13 can be opened and closed, as shown in figure 2, the cotton box is in an unpacked state, and the rear box body 13 is closed. As shown in fig. 3, the bale 14 is initially in a small bale 14, which is smaller in size. As the baling process progresses, the bale 14 grows until the bale 14 reaches a maximum, as shown in fig. 4, which is a bale-complete condition. Then, as shown in fig. 5, the rear box 13 is opened to eject the baled bale 14.

In the cotton packing process, the packing belt 3 continuously extends along with the continuous increase of the cotton bale 14, namely, in the process, the piston rod of the rocker arm oil cylinder 1 is passively pulled out, so that the rodless cavity of the rocker arm oil cylinder 1 absorbs oil from the oil return tank through the second hydraulic oil path 6. On the other hand, in this process, a certain tension of the packing belt 3 is required to ensure reliability of packing. In order to always provide the packing belt 3 with a suitable tension, for example, when the cotton bale 14 is small, the packing belt 3 is provided with a small tension; the invention obtains the actual size of the cotton bale 14 in real time by using the controller, controls the current of the electro-proportional valve 5 according to the actual size of the cotton bale 14 and the preset corresponding relation between the size of the cotton bale and the pressure value of the rod cavity to change the opening of the electro-proportional valve 5 so as to adjust the pressure value of the rod cavity, enables the pressure value of the rod cavity to correspond to the actual size of the cotton bale 14, realizes the real-time adjustment of the pressure value of the rod cavity, namely, realizes the real-time adjustment of the tension of the packing belt 3, enables the tension of the packing belt 3 to correspond to the size of the cotton bale 14, and is beneficial to enabling the compaction degree of each part of the cotton bale 14 to be uniform, enabling the cotton bale 14 to be difficult to deform, and reducing the probability of packing failure, thereby improving the packing quality.

In addition, as shown in fig. 5 and 2, when the rear box body 13 is opened to eject the large baled bale 14, the bale belt 3 becomes loose due to the ejection of the bale 14 in the process of closing the rear box body 13, and at this time, the piston rod of the rocker cylinder 1 needs to be retracted quickly, and the tension of the bale belt 3 in the idle state is controlled. In the process, before the packing belt 3 is changed from a loose state to a state with a tensioning force, the controller can control the current of the electro-proportional valve 5 to enable the flow of the electro-proportional valve 5 to be maximum, so that the hydraulic oil provided by the hydraulic source enters the rod cavity through the first hydraulic oil path 4, at the moment, the hydraulic oil in the rodless cavity of the rocker oil cylinder 1 flows to the oil return tank through the second hydraulic oil path 6, the piston rod of the rocker oil cylinder 1 is retracted quickly, the packing belt 3 is enabled to reach the tensioning state quickly, and the packing belt 3 is prevented from being loose.

Further, in order to improve the control accuracy of the tension of the packing belt 3, on the basis of the above embodiment, a pressure sensor 7 for detecting the pressure value of the rod chamber is further included, and is connected to the controller, so that the controller corrects the opening degree of the electro proportional valve 5 in real time according to the detection value of the pressure sensor 7. That is to say, this embodiment is through addding pressure sensor 7, utilizes pressure sensor 7 to come real-time detection to have the pressure value in the pole intracavity, and then feeds back to the controller through pressure sensor 7 has the real-time pressure value in the pole intracavity to form closed-loop control, when there is the pressure value in the pole intracavity to deviate, in time revises the aperture of adjusting electro proportional valve 5, makes the actual pressure value that has the pole intracavity and the theoretical pressure value that cotton bale 14 actual size corresponds unanimously, ensures the high control accuracy of packing belt 3 tensioning force.

In addition, in order to realize the active extension and active retraction of the piston rod of the rocker arm cylinder 1 during maintenance, on the basis of the above embodiment, the second hydraulic oil path 6 is provided with a first electromagnetic directional valve 8 for controlling oil inlet and oil return of the rodless cavity, and the first electromagnetic directional valve 8 is respectively connected with a hydraulic source and an oil return tank; the first electromagnetic directional valve 8 is electrically connected with the controller, so that the controller controls the first electromagnetic directional valve 8 to change direction. It can be understood that, when the controller controls the first electromagnetic directional valve 8 to work to enable the second hydraulic oil path 6 to be communicated with the hydraulic source, the hydraulic oil provided by the hydraulic source enters the rodless cavity through the first electromagnetic directional valve 8 and the second hydraulic oil path 6, and at the moment, the oil in the rod cavity returns to the oil return tank through the electro-proportional valve 5, so that the active extension of the piston rod of the rocker arm oil cylinder 1 is realized. When the controller controls the first electromagnetic reversing valve 8 to switch to work, the second hydraulic oil path 6 is communicated with the oil return tank, the first hydraulic oil path 4 is communicated with the hydraulic source by controlling the working position of the electro-proportional valve 5, the hydraulic oil provided by the hydraulic source enters the rod cavity through the electro-proportional valve 5 and the first hydraulic oil path 4, and at the moment, the oil in the rodless cavity enters the oil return tank through the first electromagnetic reversing valve 8, so that the active retraction of the piston rod of the rocker arm oil cylinder 1 is realized.

Further, in consideration of maintaining the tension of the packing belt 3 when the hydraulic pressure source is depressurized (e.g., the hydraulic pump is out of operation), the first hydraulic oil passage 4 is provided with a pilot operated check valve 9, and an outlet of the pilot operated check valve 9 communicates with the rod chamber, based on the above-described embodiment. That is to say, when the hydraulic pressure source decompression (for example hydraulic pump breaks down), hydraulically controlled check valve 9 can close rapidly, avoids having the hydraulic oil of pole intracavity to flow backwards through first hydraulic pressure oil circuit 4 to keep having the hydraulic pressure of pole intracavity, make packing belt 3 keep its tensile force, avoid when the hydraulic pressure source decompression (for example hydraulic pump breaks down), resulting in cotton bale breaking etc.. It can be understood that, because the pilot operated check valve 9 is in a reverse opening state under the action of high-pressure oil, when the active extension of the rocker arm cylinder 1 is realized, the oil in the rod cavity returns to the oil return tank through the pilot operated check valve 9 and the electro proportional valve 5.

It should be noted that the pilot-controlled check valve 9 may be replaced by a balance valve with pilot control to ensure that the working performance is improved while the tension of the packing belt 3 is maintained in the case of pressure loss of the hydraulic source.

Further, when the packing system of the cotton picker does not work, that is, when there is no cotton to be packed, the piston rod of the rocker arm cylinder 1 actively extends to make the packing belt 3 in a slack state, and then the hydraulic pressure source is stopped to supply hydraulic oil, at this time, in order to avoid the piston rod of the rocker arm cylinder 1 from shaking and the like under the action of external force, preferably, on the basis of the above embodiment, the second hydraulic oil path 6 is provided with a second electromagnetic directional valve 10 for controlling oil inlet and oil return of the rodless cavity, which is arranged in series with the first electromagnetic directional valve 8, and one of the stations of the second electromagnetic directional valve 10 has a one-way stopping function to maintain the oil pressure in the rodless cavity. It can be understood that when the second electromagnetic directional valve 10 is in the working position with the one-way cutoff function, the hydraulic oil in the rodless cavity can be prevented from returning to the oil return tank through the second hydraulic oil path 6, and at this time, under the condition that the hydraulic source stops supplying the hydraulic oil, the piston rod of the rocker arm cylinder 1 can be locked by combining the action of the hydraulic control one-way valve 9, so that the piston rod of the rocker arm cylinder 1 is fixed at a certain position.

That is, in the present embodiment, the first electromagnetic directional valve 8 and the second electromagnetic directional valve 10 cooperate to realize the oil reversing of the second hydraulic oil path 6, and at the same time, the position of the piston rod can be kept unchanged when the baling system is not in operation.

In addition, in view of safety, in order to limit the maximum pressure of the rod chamber, a relief valve 11 is connected between the first hydraulic fluid passage 4 and the return tank in addition to the above-described embodiment. That is, this embodiment limits the highest pressure in the rod cavity of the rocker cylinder 1 through the overflow valve 11, and plays a role in safety protection.

It should be noted that, in the above embodiments, the specific structure of the electro-proportional valve 5 is not limited, and preferably, the electro-proportional valve 5 is an electro-proportional pressure reducing relief valve.

In addition to the cotton picker packing belt control system, the invention also provides a cotton picker packing belt control method applied to the controller of the cotton picker packing belt control system disclosed in the above embodiment, the cotton picker packing belt control method comprises the following steps:

obtaining the size of the bale 14;

and controlling and adjusting the opening of an electric proportional valve 5 of the packing belt control system of the cotton picker according to the size of the cotton bale 14 and the preset corresponding relation between the size of the cotton bale and the pressure value of a rod cavity of the packing belt control system of the cotton picker.

It should be noted that, the present embodiment does not limit the specific manner of obtaining the size of the cotton bale 14, and preferably, the diameter of the cotton bale 14 can be detected by a sensor.

In addition, the preset corresponding relationship between the size of the cotton bale and the pressure value of the rod cavity is not specifically limited in this embodiment, and those skilled in the art can determine the corresponding relationship according to actual requirements. Generally, the larger the bale 14, the greater the pressure value of the stemmed chamber during baling. Please refer to the above-mentioned packaging process in detail, which is not described herein again.

Further, on the basis of the above embodiment, the method further includes the following steps:

when the cotton bale 14 reaches the maximum and is thrown out, the electric proportional valve 5 is controlled to be in the maximum opening degree, so that the piston rod of the rocker arm oil cylinder 1 is retracted quickly, and after the piston rod is retracted to the target position, the opening degree of the electric proportional valve 5 is controlled, so that the pressure value in the rod cavity meets the tension force requirement when the baling belt 3 is not baled.

In this embodiment, the rear box body 13 is opened to throw out the packed big cotton bale 14, and in the process of closing the rear box body 13, the current of the electro-proportional valve 5 is controlled by the controller to make the flow of the electro-proportional valve 5 reach the maximum (that is, the opening degree of the electro-proportional valve 5 is the maximum), so that the piston rod of the rocker arm cylinder 1 retracts quickly, and the situation that the packing belt 3 becomes loose due to throwing out of the cotton bale 14 is avoided, so that the packing belt 3 has a certain tension force when in no-load.

It is further noted that, in the present specification, relational terms such as first and second, and the like are used solely to distinguish one entity or action from another entity or action without necessarily requiring or implying any actual such relationship or order between such entities or actions.

The embodiments in the present description are described in a progressive manner, each embodiment focuses on differences from other embodiments, and the same and similar parts among the embodiments are referred to each other.

The cotton picker packing belt control system and the cotton picker packing belt control method provided by the invention are described in detail above. The principles and embodiments of the present invention are explained herein using specific examples, which are presented only to assist in understanding the method and its core concepts. It should be noted that, for those skilled in the art, it is possible to make various improvements and modifications to the present invention without departing from the principle of the present invention, and those improvements and modifications also fall within the scope of the claims of the present invention.