A kind of air supply mechanism, method and cotton picker of cotton picker picking head

Abstract

The application relates to a kind of air supply mechanism of cotton picker picking head, method and cotton picker, including the air supply channel connected with fan, the air supply channel bottom is equipped with air outlet, one side of air supply channel is equipped with pressure detection mechanism to detect the pressure of cotton on one side of cotton stripping disc, pressure detection mechanism is connected with control system, the air supply channel is further fixed with jet pipe, jet pipe is connected with air compressor, air compressor is connected with control system, jet pipe is provided with multiple air outlet nozzles towards cotton conveying channel, the air supply mechanism of the application can avoid the emergence of picking head flower blocking situation, and safety is guaranteed.

Description

Technical Field

[0001] This invention relates to the field of agricultural machinery technology, specifically to an air supply mechanism and method for cotton harvester head removal, and the cotton harvester itself. Background Technology

[0002] The statements herein provide only background information in relation to this invention and do not necessarily constitute prior art.

[0003] The pneumatic conveying system is a crucial system on the cotton harvester. Its function is to blow the cotton removed by the stripper disc to the cotton conveying channel, and then further to the cotton collection box to complete the cotton harvesting operation. Traditional pneumatic conveying systems have their air outlets located close to the bottom plate of the stripper head. This results in cotton clogging the stripper head, causing cotton protruding above the outlet and becoming stuck. Clogging increases the rotational resistance of the stripper disc, raises frictional temperatures, creates a fire hazard, severely impacts harvesting performance, and poses significant safety risks. Summary of the Invention

[0004] In view of the shortcomings of the existing technology, the purpose of this invention is to provide a wind supply mechanism, method and cotton harvester for cotton picking head removal, so as to avoid the occurrence of cotton picking head blockage.

[0005] To achieve the above objectives, the present invention is implemented through the following technical solution:

[0006] In a first aspect, embodiments of the present invention provide an air supply mechanism for the cotton picking head, including an air supply channel connected to a blower, an air outlet at the bottom of the air supply channel, a pressure detection mechanism on one side of the air supply channel to detect the pressure of cotton on one side of the cotton removal disc, the pressure detection mechanism being connected to a control system, the air supply channel also having a jet pipe fixed thereon, the jet pipe being connected to an air compressor, the air compressor being connected to a control system, and the jet pipe having multiple air outlets facing the cotton conveying channel to blow cotton blocked on one side of the cotton removal disc into the cotton conveying channel;

[0007] When the pressure detection mechanism detects that the pressure of the cotton blockage on one side of the cotton removal disc exceeds the set value, it sends a signal to the control system. The control system then controls the air compressor to work, using the jet pipe and air nozzle to form a jet on the blocked cotton, blowing the blocked cotton into the cotton conveying channel.

[0008] Optionally, multiple air outlets are provided, and the multiple air outlets are arranged along the axial direction of the jet pipe.

[0009] Optionally, three air outlets are provided, wherein the uppermost air outlet is set at an acute angle to the axis of the jet tube and is set downwards, and the axes of the air outlets located in the middle and bottom are set perpendicular to the axis of the jet tube.

[0010] Optionally, the acute angle is set to 30°-90°.

[0011] Optionally, the nozzle adopts a conical structure, with the area of ​​its air inlet end being larger than the area of ​​its air outlet end to increase the jet velocity.

[0012] Optionally, the bottom end of the air supply channel is fixed to the base plate, the top end is fixed to the side plate, the side plate is fixed to the suspension column, the suspension column is provided with a fixing mechanism to realize the installation on the cotton harvester, the top end of the jet pipe is fixed to the side plate, the jet pipe is bent and then cooperates with the air supply channel, and is fixedly connected to the air supply channel through multiple fixing brackets.

[0013] Optionally, the fixing mechanism includes a pulley installed on the top of the suspension column, and a positioning pin assembly slidably connected to the side plate below the pulley.

[0014] Optionally, the pressure detection mechanism includes a first detection plate and a second detection plate located inside the first detection plate. Both the first and second detection plates are fixed to the air supply channel and have a set distance between them. The first and second detection plates are connected to the detection circuit of the control system.

[0015] The first detection plate can deform and come into contact with the second detection plate when the cotton pressure on one side of the cotton removal disc exceeds the set value, thereby activating the detection circuit of the control system.

[0016] Secondly, embodiments of the present invention provide a method for an air supply mechanism for the cotton harvester's picking head:

[0017] The blower sends air into the air supply channel, and the air outlet of the air supply channel uses the air force to send the cotton on one side of the cotton removal disc into the cotton conveying channel. The pressure detection mechanism monitors the pressure of the cotton blocking the cotton on one side of the cotton removal disc in real time. When the detected pressure is greater than the set value, it sends a signal to the control system. The control system controls the air compressor to work, and the jet pipe and air outlet generate a jet to blow the cotton blocking the cotton on one side of the cotton removal disc into the cotton conveying channel.

[0018] Thirdly, embodiments of the present invention provide a cotton harvester equipped with the air supply mechanism for the cotton harvester head as described in the first aspect.

[0019] The beneficial effects of this invention are as follows:

[0020] 1. The air supply mechanism of the present invention is provided with a jet pipe connected to an air compressor. The jet pipe is provided with multiple air outlets facing the cotton conveying channel. The air supply channel is also provided with a pressure detection mechanism. When the pressure detection mechanism detects that the pressure of the blocked cotton is greater than a set value, the air compressor works and the air outlets spray gas to generate a jet, which blows the cotton blocked on one side of the cotton removal disc into the cotton conveying channel, thus avoiding the situation of cotton blockage during cotton removal and thus avoiding the risk of fire.

[0021] 2. The air supply mechanism of the present invention only requires adding a jet pipe to the air supply channel and configuring a corresponding air compressor, which makes the overall modification simple and the modification cost low.

[0022] 3. The air supply mechanism of the present invention has a conical structure for the air outlet, which can increase the air outlet speed, improve the jet effect, and thus ensure the removal effect on the clogging cotton. Attached Figure Description

[0023] The accompanying drawings, which form part of this invention, are used to provide a further understanding of the invention. The illustrative embodiments of the invention and their descriptions are used to explain the invention and do not constitute an improper limitation of the invention.

[0024] Figure 1 This is a schematic diagram of the overall structure of Embodiment 1 of the present invention;

[0025] Figure 2 This is a front view of the overall structure of Embodiment 1 of the present invention;

[0026] Figure 3 This is a rear view of the overall structure of Embodiment 1 of the present invention;

[0027] Figure 4 This is a side view of the overall structure of Embodiment 1 of the present invention;

[0028] Figure 5 This is a schematic diagram of the jet tube structure in Embodiment 1 of the present invention;

[0029] Figure 6 This is a schematic diagram of the air supply mechanism installed inside the cotton harvester in Embodiment 3 of the present invention;

[0030] Among them, 1. pulley, 2. conical pin, 3. cylindrical pin, 4. hanging column, 5. side plate, 6. air supply channel, 7. jet pipe, 71. air outlet, 72. air outlet, 73. air outlet, 8. fixing frame, 9. first detection plate, 10. column side plate, 11. bolt, 12. air outlet, 13. bolt, 14. air supply channel base, 15. cotton removal tray, 16. second detection plate. Detailed Implementation

[0031] For ease of description, the words "upper" and "lower" appearing in this invention only indicate that they are consistent with the upper and lower directions of the accompanying drawings and do not limit the structure. They are merely for the purpose of facilitating the description of this invention and simplifying the description, and do not indicate or imply that the device or component referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this invention.

[0032] Example 1

[0033] This embodiment provides an air supply mechanism for the cotton harvester's picking head, such as... Figures 1-4As shown, it includes a vertically arranged air supply channel 6, which is connected to a fan via an air duct. The air supply channel 6 is made of square tubing, and an air outlet 12 is provided at the bottom of the air supply channel 6. The air outlet 12 is positioned facing the cotton conveying channel. The fan can supply air to the air supply channel 6, and after the air outlet 12 discharges air, the cotton that has fallen off one side of the cotton removal disc 15 is sent into the cotton conveying channel.

[0034] The top of the air supply channel 6 is fixed to a suspension column 4 on the side away from the cotton conveying channel. The suspension column 4 is fixed to the side plate 5 by bolts and nuts. The side plate 5 is fixedly connected to the top of the air supply channel 6. A shaft cylinder is provided at the top of the suspension column 4. A wheel axle is rotatably connected inside the shaft cylinder. A pulley 1 is fixed at one end of the wheel axle. The pulley 1 is used to cooperate with the lifting frame inside the cotton harvester to realize the installation of the entire air supply mechanism inside the cotton harvester.

[0035] A positioning pin assembly is provided below the shaft cylinder and is slidably connected to the suspension column 4. The positioning pin assembly includes a conical pin 2 and a cylindrical pin 3 arranged vertically. The conical pin 2 and the cylindrical pin 3 are slidably connected to the suspension column 4 and their axes are perpendicular to the axis of the suspension column 4. When the entire air supply mechanism moves to the target position along the lifting frame via the pulley 1, the conical pin 2 and the cylindrical pin 3 are inserted into the corresponding positioning holes to achieve the positioning and fixation of the entire air supply mechanism.

[0036] Below the suspended column 4, there is a column side plate 10 that is welded and fixed to the air supply channel 6. The column side plate 10 and the surface of the air supply channel 6 are at a set angle. The column side plate 10 plays a sealing role to prevent other impurities from entering the roller through the gap between the water brush door and the column, thus affecting the operation of the cotton removal disc.

[0037] The bottom end of the air supply channel 6 is fixed with an air supply channel base 14 by bolts 13.

[0038] One side of the air supply channel 6 is equipped with a suspension column 4, and the other side is equipped with a pressure detection mechanism, which is used to detect the cotton pressure on one side of the cotton removal disc.

[0039] The pressure detection mechanism includes a first detection plate 9 and a second detection plate 16. The inner side of the first detection plate 9 is fixedly connected to two V-shaped plates by bolts 11 and nuts. The V-shaped plates are welded and fixed to the side of the air supply channel 6.

[0040] The second detection plate 16 is located inside the first detection plate 9 and has a set distance gap with the first detection plate 9. The second detection plate 16 is fixedly connected to the connecting plate provided on the air supply channel by bolts and nuts, thereby achieving a fixed connection with the air supply channel.

[0041] An insulating pad is provided between the second detection plate and the connecting plate, and the bolts and nuts between the second detection plate and the connecting plate are also made of insulating material.

[0042] The first detection board 9 and the second detection board 16 are connected to the detection circuit of the control system. When the first detection board 9 and the second detection board 16 come into contact, they can connect the detection circuit of the control system and send a signal to the control system.

[0043] In this embodiment, when the cotton pressure on one side of the cotton removal disc 15 exceeds the set value, the first detection plate 9 can be deformed, and then the first detection plate 9 will come into contact with the second detection plate 16, thereby sending a signal to the control system that the cotton pressure is too high and the blockage is caused.

[0044] The above structure can be achieved using the existing structure of the cotton harvester's head-picking and air-sending mechanism. Further structural and connection details will not be described in detail here. In the existing air-sending mechanism, the control system is connected to the alarm. When an alarm signal is detected that the cotton pressure is too high, the alarm will sound, and manual cleaning of the blocked cotton is required.

[0045] This embodiment is an improvement on the existing air supply mechanism structure.

[0046] A jet pipe 7 is installed on the side of the air supply duct near the cotton conveying pipe. The jet pipe 7 is made of a corrosion-resistant, high-hardness metal material, such as stainless steel, and is installed vertically. The jet pipe 7 includes three pipe sections. The first pipe section at the top is fixed to the side plate 5. The bottom end of the first pipe section has a bent pipe section. One end of the bent pipe section is connected to the first pipe section, and the other end is connected to the second pipe section. The second pipe section is installed along the surface of the air supply duct and is fixedly connected to the air supply duct 6 by multiple fixing brackets 8.

[0047] The fixing frame 8 can adopt the existing pipe fixing frame structure, including an arc plate, a fixing plate on one side of the arc plate, the fixing plate is fixed to the air supply channel 6 by round head screws, and the arc plate presses the second pipe section tightly against the surface of the air supply channel.

[0048] The second section of the jet pipe 7 is provided with multiple air outlets, which are arranged along the axial direction of the second section.

[0049] like Figure 5 As shown, in this embodiment, the jet pipe is provided with three air outlets, which are respectively located at the upper, middle and lower parts of the second pipe section. All three air outlets are oriented towards the cotton conveying channel. The air outlet 72 located in the middle and the air outlet 73 located at the lower part have their axes perpendicular to the axis of the jet pipe. The air outlet 71 located at the upper part forms a set acute angle with the axis of the jet pipe 7 and is oriented downwards to better blow the blocked cotton into the cotton conveying channel.

[0050] Preferably, the set acute angle is 30°-90°.

[0051] To further improve the air outlet speed and ensure the jet effect, the air outlet adopts a conical structure, with the larger end connected to the jet pipe as the air inlet and the smaller end as the air outlet.

[0052] The jet pipe 7 is connected to an air compressor via an air pipe. The air compressor can send gas at a set pressure into the jet pipe, thereby creating a jet effect on the blocked cotton through the air outlet.

[0053] The air compressor is connected to the control system, which controls its operation.

[0054] Example 2

[0055] This embodiment provides a method for the air supply mechanism of the cotton harvester head as described in Embodiment 1:

[0056] When the fan operates, it blows air into the air supply channel 6. The air outlet of the air supply channel 6 blows air, blowing the cotton that has been removed from one side of the cotton removal disc 15 into the cotton conveying channel. When the pressure of the cotton blocking one side of the cotton removal disc 15 exceeds the set value, it will squeeze the first detection plate 9, causing the first detection plate 9 to deform. The first detection plate 9 will contact the second detection plate 16, which will connect the detection circuit of the control system. The control system receives the signal of excessive pressure and starts the air compressor. The air compressor introduces gas at the set pressure into the jet pipe 7, and the air outlet forms a jet. Under the action of the jet, the cotton blocking one side of the cotton removal disc 15 is blown into the cotton conveying channel.

[0057] The air supply mechanism and method of this embodiment avoid the occurrence of flower blocking, thereby avoiding fire hazards. Moreover, when modifying the equipment, only a jet pipe needs to be added to the air supply channel and a corresponding air compressor needs to be configured. The overall modification is simple and the modification cost is low.

[0058] Example 3

[0059] This embodiment provides a cotton harvester, such as Figure 6 As shown, the cotton harvester is equipped with the air supply mechanism for removing cotton heads as described in Embodiment 1. The air supply mechanism is located on one side of the cotton removal disc 15. The rest of the cotton harvester structure can be constructed using existing technology and will not be described in detail here.

[0060] The above description is merely a preferred embodiment of this application and is not intended to limit this application. Various modifications and variations can be made to this application by those skilled in the art. Any modifications, equivalent substitutions, improvements, etc., made within the spirit and principles of this application should be included within the protection scope of this application.

Claims

1. An air supply mechanism for the cotton picking head, comprising an air supply channel connected to a fan, an air outlet at the bottom of the air supply channel, a pressure detection mechanism on one side of the air supply channel for detecting the pressure of cotton on one side of the cotton removal disc, the pressure detection mechanism being connected to a control system, characterized in that, The air supply channel is also fixed with a jet pipe, which is connected to an air compressor. The air compressor is connected to a control system. The jet pipe is equipped with multiple air outlets facing the cotton conveying channel. The top of the jet tube is fixed to the side plate. After a section of bending, the jet tube is matched with the air supply channel and is fixedly connected to the air supply channel through multiple fixing brackets. After the pressure detection mechanism detects that the pressure of the cotton blockage on one side of the cotton removal disc exceeds the set value, it sends a signal to the control system. The control system then controls the air compressor to work, using the jet pipe and air nozzle to form a jet against the blocked cotton, blowing the blocked cotton into the cotton conveying channel. The pressure detection mechanism includes a first detection plate and a second detection plate located inside the first detection plate. Both the first and second detection plates are fixed to the air supply channel and have a set distance between them. The first and second detection plates are connected to the detection circuit of the control system. The first detection plate can deform and come into contact with the second detection plate after the cotton pressure on one side of the cotton removal disc exceeds the set value, thereby connecting the detection circuit of the control system. The system has three air outlets. The top air outlet is set at an acute angle to the axis of the jet tube and faces downwards. The air outlets in the middle and bottom are set perpendicular to the axis of the jet tube.

2. The air supply mechanism for the cotton harvester head as described in claim 1, characterized in that, The set acute angle is 30°-90°.

3. The air supply mechanism for the cotton harvester head as described in claim 1, characterized in that, The air outlet has a conical structure, with the area of ​​the air inlet end being larger than the area of ​​the air outlet end to increase the jet velocity.

4. The air supply mechanism for the cotton harvester head as described in claim 1, characterized in that, The bottom end of the air supply channel is fixed to the base plate, the top end is fixed to the side plate, the side plate is fixed to the suspension column, and the suspension column is equipped with a fixing mechanism to realize the installation on the cotton harvester.

5. The air supply mechanism for the cotton harvester head as described in claim 4, characterized in that, The fixing mechanism includes a pulley installed on the top of the suspension column, and a positioning pin assembly slidably connected to the side plate below the pulley.

6. A method for a blower mechanism for the cotton harvester head as described in any one of claims 1-5, characterized in that: The blower sends air into the air supply channel, and the air outlet of the air supply channel uses the air force to send the cotton on one side of the cotton removal disc into the cotton conveying channel. The pressure detection mechanism monitors the pressure of the cotton blocking the cotton on one side of the cotton removal disc in real time. When the detected pressure is greater than the set value, it sends a signal to the control system. The control system controls the air compressor to work, and the jet pipe and air outlet generate a jet to blow the cotton blocking the cotton on one side of the cotton removal disc into the cotton conveying channel.

7. A cotton harvester, characterized in that, The machine is equipped with an air supply mechanism for picking cotton heads as described in any one of claims 1-5.

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