A cotton picking head for an automatic cotton picker

Abstract

The present invention relates to a cotton picking head for an automatic cotton picker applied to the technical field of cotton pickers, which includes a machine body, a detection mechanism and a cotton picking intelligent detector. The detection mechanism is arranged downstream of the doffer and corresponds to one row of spindles. The detection mechanism includes a general inspection rod, a plurality of conduction rods corresponding to the spindles, and a detection wool disc installed at the end of the conduction rod and abutted against the outer ring of the spindle. The detection component includes a squeezing chamber arranged at the end of the general inspection rod and close to the detection wool disc side, and a detection chamber connected to the machine body; the cotton picking intelligent detector is provided with a damage detection module, a damage analysis module and a warning module. With the above structure, the detection mechanism is used to detect each row of spindles passing by, and the spindles in use are detected in real time to timely understand the wear state of the spindles. The cotton picking intelligent detector automatically judges the wear state of the spindles on the cotton picking head, which is convenient for timely maintenance and replacement, and improves the picking effect and cleaning rate of the cotton picking head.

Description

Technical Field

[0001] The present invention relates to a cotton picking head, in particular to a cotton picking head for an automatic cotton picker applied to the technical field of cotton pickers. Background Art

[0002] The cotton planting range in China is quite extensive. Previously, the picking of cotton mainly relied on manual labor, with high labor intensity and low efficiency. With the continuous improvement of the level of agricultural mechanization in China, the development of large-scale machine-picked cotton has become an irresistible trend in the cotton industry in China. Therefore, cotton pickers have emerged on the market. By using cotton pickers, the cotton picking speed can be effectively increased, creating higher income for cotton pickers.

[0003] The invention patent with the publication number of CN117678424A discloses a small cotton picking head and a cotton picker having the same, including: a cotton picker, a mounting seat connected to the cotton picker, a drive controller arranged on the mounting seat, and an intermediate transmission mechanism arranged in the mounting seat. The drive controller is used to be connected to the central control system in the cab, and the drive controller, the intermediate transmission mechanism and the cotton picker are sequentially connected along the power transmission direction. The drive controller is used to drive the cotton picker to act through the intermediate transmission mechanism, and transmit the rotation speed and torque of the cotton picker to the central control system in real time, so that the driver issues an adjustment command according to the rotation speed and torque displayed by the central control system, so that the central control system correspondingly adjusts the rotation speed of the drive controller, and then adjusts the working rotation speed of the cotton picker. It has flexible adjustment of the row spacing between adjacent cotton picking heads, can meet the harvesting of multiple row spacings, is convenient for the maintenance operation of the cotton picking head, and can adjust the rotation speed according to the cotton yields of different regional cotton fields and different cotton rows.

[0004] When the above solution is implemented, when picking cotton, the rotation of multiple spindles is mainly driven by a transmission mechanism. During the rotation of the spindles, as Figure 1 shown, the sharp teeth on its surface wind up the cotton and separate it from the cotton head. The spindles gradually move the cotton to the doffer, and the cotton on the spindles is separated by the doffer, realizing the picking and collection of the cotton on the cotton head. Therefore, the picking effect and cleaning rate of the cotton picking head during cotton picking are usually determined by the wear degree of the sharp teeth on the spindles. When the cotton picker is continuously working, usually during the shutdown maintenance period, the maintenance personnel check the wear condition of the sharp teeth on the spindles by visual observation, which easily leads to untimely replacement of the worn spindles, thus affecting the picking effect and cleaning rate of the cotton picking head. Summary of the Invention

[0005] Aiming at the above-mentioned prior art, the technical problem to be solved by the present invention is that when the cotton picker is continuously working, usually during the shutdown maintenance period, the maintenance personnel check the wear condition of the sharp teeth on the spindles by visual observation, which easily leads to untimely replacement of the worn spindles, thus affecting the picking effect and cleaning rate of the picking head.

[0006] To solve the above problems, the present invention provides a cotton picking head for an automatic cotton picker, including:

[0007] A body, on which a spindle driving assembly for driving the operation of spindles and a doffer driving assembly for driving the operation of a doffer are respectively installed. The spindles are arranged in multiple rows, and multiple spindles are arranged in each row. The doffer and the spindles are arranged correspondingly;

[0008] A detection mechanism, which is arranged downstream of the doffer and corresponds to one row of spindles. The detection mechanism includes a general inspection rod, a plurality of conduction rods corresponding to the spindles, and a detection wool disc installed at the end of the conduction rod and abutted against the outer ring of the spindle. One end of the conduction rod far from the detection wool disc is connected to the general inspection rod. Detection components are arranged at both ends of the general inspection rod and are connected to the body through the detection components. The detection components include a squeezing chamber arranged at the end of the general inspection rod and close to the detection wool disc side, and a detection chamber connected to the body. The detection chamber communicates with the end of the squeezing chamber. Limiting plates are slidably connected to both ends of the inner cavity of the squeezing chamber. The inner cavity of the squeezing chamber is filled with a pressured liquid located between the two limiting plates. A main air pressure sensor is installed in the detection chamber;

[0009] A cotton picking intelligent detector, which is arranged on one side of the body. A damage detection module, a damage analysis module and a warning module are arranged on the cotton picking intelligent detector. The input end of the damage detection module is signal-connected to the main air pressure sensor, the output end of the damage detection module is signal-connected to the damage analysis module, and the output end of the damage analysis module is signal-connected to the warning module.

[0010] In the above-mentioned cotton picking head for an automatic cotton picker, the detection mechanism detects each row of spindles passing by, performs real-time detection on the spindles in use, timely understands the wear state of the spindles, and automatically judges the wear state of the spindles on the cotton picking head through the cotton picking intelligent detector, which is convenient for timely maintenance and replacement, and improves the picking effect and cleaning rate of the cotton picking head.

[0011] As a further improvement of the present application, a limiting block fixed to the inner wall of the squeezing chamber is arranged on one side of each limiting plate close to the pressured liquid, and the two limiting plates are connected in series through an elastic rope passing through the pressured liquid.

[0012] As a further improvement of the present application, a butting sleeve abutted against the squeezing chamber is sleeved on the end of the general inspection rod. The outer ring of the butting sleeve is of an arc structure, and the butting surface between the squeezing chamber and the butting sleeve is an elastic butting surface.

[0013] As a further improvement of the present application, a balance piston plate is slidably connected to the inner cavity of each detection chamber. The main air pressure sensor is installed on the balance piston plate. A main elastic member is installed on the side of the balance piston plate far from the squeezing chamber. The ends of the two detection chambers far from the squeezing chamber are connected in series through a balance pipe.

[0014] As another improvement of the present application, a main adjustment port is connected to the balance pipe. An air pump 1 is externally connected to the main adjustment port, and a solenoid valve 1 is installed on the main adjustment port. A sensitivity adjustment module is further provided on the cotton picking intelligent detector. The input end of the sensitivity adjustment module is signal-connected to the main air pressure sensor, and the output end of the sensitivity adjustment module is respectively signal-connected to the solenoid valve 1 and the air pump.

[0015] As a supplement to another improvement of the present application, a single inspection cylinder corresponding to the conduction rod is fixed on the total inspection rod. The end of the conduction rod is inserted into and extends into the inner cavity of the total inspection rod and the inner cavity of the single inspection cylinder. A detection piston plate fixed to the end of the conduction rod is slidably connected to the inner cavity of the single inspection cylinder. A single air pressure sensor is installed at one end of the detection piston plate away from the conduction rod. The input end of the damage detection module is signal-connected to the single air pressure sensor.

[0016] As a supplement to another improvement of the present application, a single elastic member is installed on one side of the detection piston plate close to the conduction rod. A single adjustment port is connected to one end of the single inspection cylinder away from the conduction rod. A solenoid valve 2 is installed on the single adjustment port. The single adjustment port is communicated with the output end of the air pump. The input end of the sensitivity adjustment module is signal-connected to the single air pressure sensor, and the output end of the sensitivity adjustment module is signal-connected to the solenoid valve 2.

[0017] As another improvement of the present application, a hook surface brush holder is detachably connected to one side of the detection wool disc close to the spindle. A guide ring is fixed on the detection wool disc, and the guide ring is slidably inserted into the conduction rod.

[0018] To sum up, when each row of spindles passes through the total inspection rod, the spindles will pass through the bottom of the corresponding detection wool disc and come into contact with the bottom wool surface of the detection wool disc, exerting a pulling force on the detection wool disc. The pointed teeth of the spindles in a moving state have different degrees of wear, resulting in different acting forces on the detection wool disc. The acting forces are transmitted to the total inspection rod through the conduction rod. By detecting the stress state of the total inspection rod, the wear state of the corresponding row of spindles can be judged, and an understanding and judgment of their wear conditions can be obtained. By setting the cotton picking intelligent detector, when the total inspection rod is stressed, the total inspection rod will generate a squeezing force on the extrusion chamber. After being squeezed, the extrusion chamber will generate a pressure on the compressed liquid inside the extrusion chamber. After being pressured, the compressed liquid will push the limit plates at both ends towards the inner cavity of the detection chamber, compressing the gas in the inner cavity of the detection chamber. The main air pressure sensor can detect the air pressure state in the detection chamber in real time, thereby automatically and intelligently judging the wear state of the spindles, timely reminding the driver and maintenance personnel to perform maintenance and replacement, and improving the picking effect and cleaning rate of the cotton picking head. Description of the Drawings

[0019] Figure 1 Schematic diagram of the spindle structure in the prior art;

[0020] Figure 2 Schematic diagram of the cotton picking head of the first and second embodiments of the present application;

[0021] Figure 3 Structural schematic diagram of the detection mechanism for the first and second embodiments of the present application;

[0022] Figure 4 Cross-sectional schematic diagram of the detection component for the first and second embodiments of the present application;

[0023] Figure 5 Control schematic diagram of the cotton picking intelligent detector for the first embodiment of the present application;

[0024] Figure 6 Cross-sectional schematic diagram of the detection mechanism for the first and second embodiments of the present application;

[0025] Figure 7 Cross-sectional schematic diagram of the single inspection cylinder for the first and second embodiments of the present application;

[0026] Figure 8 Control schematic diagram of the cotton picking intelligent detector for the second embodiment of the present application.

[0027] Description of the reference numerals in the figure:

[0028] 1. Spindle drive assembly; 2. Spindle; 3. Doffing disc drive assembly; 4. Doffing disc; 5. Detection wool disc; 6. Conduction rod; 7. Single inspection cylinder; 8. Total inspection rod; 9. Cotton picking intelligent detector; 10. Hook surface brush seat; 11. Extrusion chamber; 12. Detection chamber; 13. Abutted sleeve; 14. Elastic abutting surface; 15. Limiting plate; 16. Main air pressure sensor; 17. Balance piston plate; 18. Main elastic member; 19. Balance pipe; 20. Main adjustment port; 21. Guide ring; 22. Detection piston plate; 23. Single air pressure sensor; 24. Single adjustment port; 25. Single elastic member. Specific embodiments

[0029] The following will make a detailed description of the two embodiments of the present application with reference to the accompanying drawings.

[0030] The first embodiment:

[0031] Figures 2 - 5Disclosed is a cotton picking head for an automatic cotton picker, which includes a machine body, a detection mechanism, and a cotton picking intelligent detector 9. An end spindle driving assembly 1 for driving the operation of the end spindles 2 and a doffer driving assembly 3 for driving the operation of the doffer 4 are respectively installed on the machine body. The end spindles 2 are arranged in multiple rows, and multiple end spindles 2 are arranged in each row. The doffer 4 and the end spindles 2 are arranged correspondingly. The doffer driving assembly 3 drives the multiple rows of end spindles 2 to rotate and synchronously drives the multiple end spindles 2 to rotate self - sufficiently, so as to realize the function of collecting cotton on the cotton head. The rotating multiple rows of end spindles 2 pass by the doffer 4 in sequence, and the cotton on the end spindles 2 is stripped by the doffer 4 driven by the doffer driving assembly 3 and collected by subsequent components. The above - mentioned components are all prior arts in the automatic cotton picker and are well - known technical solutions to those skilled in the art, which are not within the protection scope of the technical solution of this application, and their specific structures and working principles will not be elaborated herein.

[0032] In this embodiment, please refer to Figures 2 - 4 , the detection mechanism is arranged downstream of the doffer 4 and corresponds to one row of the end spindles 2. After the end spindles 2 carry cotton through the doffer 4, the end spindles 2 will pass through the detection mechanism and then pick the cotton. The detection mechanism detects each row of end spindles 2 passing by, and conducts real - time detection on the end spindles 2 in use to timely understand the wear state of the end spindles 2.

[0033] It is worth mentioning that the detection mechanism includes a general inspection rod 8, a plurality of conduction rods 6 corresponding to the end spindles 2, and a detection wool disc 5 installed at the end of the conduction rod 6 and abutted against the outer ring of the end spindle 2. One end of the conduction rod 6 far from the detection wool disc 5 is connected to the general inspection rod 8. When each row of end spindles 2 passes by the general inspection rod 8, the end spindles 2 will pass through the bottom of the corresponding detection wool disc 5 and come into contact with the bottom wool surface of the detection wool disc 5, exerting a pulling force on the detection wool disc 5. The tip teeth of the end spindles 2 in a moving state have different degrees of wear, and the acting forces on the detection wool disc 5 are different. The acting forces are transmitted to the general inspection rod 8 through the conduction rods 6. By detecting the stress state of the general inspection rod 8, the wear state of the corresponding row of end spindles 2 can be judged, and its wear condition can be understood and judged. Detection components are arranged at both ends of the general inspection rod 8 and are connected to the machine body through the detection components. The detection components include an extrusion chamber 11 arranged at the end of the general inspection rod 8 and close to the detection wool disc 5 side, and a detection chamber 12 connected to the machine body. The detection chamber 12 is communicated with the end of the extrusion chamber 11. Both ends of the inner cavity of the extrusion chamber 11 are slidably connected with a limiting plate 15. The inner cavity of the extrusion chamber 11 is filled with a pressurized liquid located between the two limiting plates 15, locking the pressurized liquid between the two limiting plates 15, so that the pressurized liquid is not easily introduced into the detection chamber 12, reducing the influence on the detection result of the main air pressure sensor 16. And the pressurized liquid is preferably a thick liquid with a relatively large density, reducing the situation that it enters the detection chamber 12 through the gap between the limiting plate 15 and the inner wall of the extrusion chamber 11. A main air pressure sensor 16 is installed in the detection chamber 12. When the general inspection rod 8 is stressed, such as Figure 4As shown, the total inspection rod 8 will generate an extrusion force on the extrusion chamber 11. After being extruded, the extrusion chamber 11 will generate pressure on the pressurized liquid inside it. After the pressurized liquid is pressured, it will push the limiting plates 15 at both ends to move towards the inner cavity of the detection chamber 12, compressing the gas in the inner cavity of the detection chamber 12. The main air pressure sensor 16 can detect the air pressure state in the detection chamber 12 in real time.

[0034] In addition, the cotton picking intelligent detector 9 is arranged on one side of the machine body. The cotton picking intelligent detector 9 is provided with a damage detection module, a damage analysis module and a warning module. The input end of the damage detection module is signal-connected to the main air pressure sensor 16, the output end of the damage detection module is signal-connected to the damage analysis module, and the output end of the damage analysis module is signal-connected to the warning module. When the cotton picking head picks cotton, after each row of picking spindles 2 picks cotton, they pass through the doffer 4 in turn and move towards the detection mechanism. The picking spindles 2 of the corresponding row come into contact with the bottom of the corresponding detection wool disc 5 on the total inspection rod 8. When the pointed teeth on the picking spindle 2 are less worn, the moving picking spindle 2 will generate a greater acting force on the detection wool disc 5; when the pointed teeth on the picking spindle 2 are more worn, the moving picking spindle 2 will generate a smaller acting force on the detection wool disc 5. The damage analysis module presets the acting force data of the picking spindle 2 on the detection wool disc 5 in different wear states, which is convenient for timely judging the wear state of the picking spindle 2; when the picking spindle 2 passes through the detection wool disc 5, the acting force of the picking spindle 2 of the corresponding row on the corresponding detection wool disc 5 is jointly transmitted to the total inspection rod 8 through the conduction rod 6. After the total inspection rod 8 is stressed, it squeezes the extrusion chamber 11. The main air pressure sensor 16 will detect the pressure data in the detection chamber 12 and send it to the damage detection module. The damage detection module calculates the stress state of the corresponding total inspection rod 8 and sends the calculation result to the damage analysis module. The damage analysis module judges the overall wear condition of the picking spindles 2 in the corresponding row and calculates the average wear degree of each picking spindle 2 through the number of picking spindles 2 in the corresponding row. The damage analysis module compares the average wear degree with the preset qualified wear degree; when the damage analysis module judges that the average wear degree of each row of picking spindles 2 is less than the preset qualified wear degree, the damage analysis module will send a detection qualified reminder signal to the reminder module, and the reminder module will issue a corresponding sound and light reminder to remind the driver of the wear state of the picking spindles 2 on the cotton picking head; when the damage analysis module judges that the average wear degree of one row or more rows of picking spindles 2 is equal to the preset qualified wear degree, the damage analysis module will send an inspection warning signal to the reminder module to remind the driver that one row or more rows of picking spindles 2 on the cotton picking head are in a state of about to be damaged, which is convenient for the driver to understand the working state of the cotton picking head and to overhaul or replace it in advance before the next long cotton picking work; when the damage analysis module judges that the average wear degree of one row or more rows of picking spindles 2 is greater than the preset qualified wear degree, the damage analysis module will send a detection qualified reminder signal to the reminder module, and the reminder module will issue a corresponding sound and light reminder to remind the driver that some of the picking spindles 2 in one row or more rows of picking spindles 2 on the cotton picking head are in a state of excessive wear. This is convenient for the driver to judge the timing of shutdown for maintenance and replacement according to the current picking area, and can detect the wear state of the picking spindles 2 on the cotton picking head in real time, which is convenient for the driver or maintenance personnel to understand the equipment state in time and reduce the situation of the worn picking spindles 2 continuing to work after damage, thereby improving the picking effect and cleaning rate of the cotton picking head.

[0035] In this embodiment, please refer to Figure 4, a limiting block fixed to the inner wall of the extrusion chamber 11 is provided on one side of each limiting plate 15 close to the pressurized liquid. The two limiting plates 15 are connected in series by an elastic rope passing through the pressurized liquid. The two limiting plates 15 are pulled by the elastic rope to play a limiting role on the limiting plates 15, and the pressurized liquid is locked between the two limiting plates 15, making it not easy to leak into the detection chamber 12, improving the accuracy of the detection result of the main air pressure sensor 16 in the detection chamber 12. A contact sleeve 13 in contact with the extrusion chamber 11 is sleeved on the end of the total inspection rod 8. The outer ring of the contact sleeve 13 is an arc-shaped structure, and the contact surface between the extrusion chamber 11 and the contact sleeve 13 is an elastic contact surface 14. After the total inspection rod 8 is stressed, it will drive the contact sleeve 13 to move and play a certain extrusion role on the extrusion chamber 11. By setting the contact surface between the extrusion chamber 11 and the contact sleeve 13 as an elastic structure, the contact sleeve 13 can better extrude the pressurized liquid in the inner cavity of the extrusion chamber 11, making it more sensitive to push the limiting plates 15 at both ends to move and compress the gas in the inner cavity of the detection chamber 12.

[0036] In addition, a balance piston plate 17 is slidably connected to the inner cavity of each detection chamber 12. The main air pressure sensor 16 is installed on the balance piston plate 17. A main elastic member 18 is installed on the side of the balance piston plate 17 away from the extrusion chamber 11. The ends of the two detection chambers 12 away from the extrusion chamber 11 are connected in series through a balance pipe 19 to balance the air pressure inside the two detection chambers 12. When the extrusion chamber 11 is extruded and the limiting plates 15 at both ends are pushed to move, the air pressure in the inner cavities of the two detection chambers 12 is equal, making the detection result of the main air pressure sensor 16 more accurate. A main adjustment port 20 is connected to the balance pipe 19. An air pump I is externally connected to the main adjustment port 20, and a solenoid valve I is installed on the main adjustment port 20. A sensitivity adjustment module is also provided on the cotton picking intelligent detector 9. The input end of the sensitivity adjustment module is signal-connected to the main air pressure sensor 16, and the output end of the sensitivity adjustment module is respectively signal-connected to the solenoid valve I and the air pump. By adjusting the initial value of the air pressure between the balance piston plate 17 and the limiting plate 15, the degree of air pressure change detected by the main air pressure sensor 16 is adjusted. For example, when the initial value of the air pressure between the balance piston plate 17 and the limiting plate 15 is low, the extrusion of the extrusion chamber 11 has a greater effect on the air pressure change between them; when the initial value of the air pressure between the balance piston plate 17 and the limiting plate 15 is high, the high-pressure gas has a pushing effect on the outside of the limiting plate 15, and the stroke of the extrusion chamber 11 pushing the limiting plate 15 after being extruded is small, so that the air pressure change between the balance piston plate 17 and the limiting plate 15 is small, and the air pressure change detected by the main air pressure sensor 16 is small. The initial value of the air pressure between the corresponding balance piston plate 17 and the limiting plate 15 can be adjusted according to different models of the picking spindles 2 to accurately judge the wear degree of different models of picking spindles 2. When it is necessary to adjust the sensitivity to the wear degree of the picking spindles 2, the cotton picking head is in a stopped state. The air pump is controlled to work and the solenoid valve I is opened through the sensitivity adjustment module. The air pump inflates the balance pipe 19, and the high-pressure gas pushes the balance piston plate 17 to move. The balance piston plate 17 moves to compress the space between it and the limiting plate 15, and the air pressure between the two is detected by the main air pressure sensor 16. The main air pressure sensor 16 sends the air pressure value to the sensitivity adjustment module. The sensitivity adjustment module judges whether the air pressure value of the main air pressure sensor 16 reaches the predetermined value, and then controls the states of the air pump and the solenoid valve I to complete the sensitivity adjustment work.

[0037] The second implementation mode:

[0038] Figures 6 - 8The cotton picking head for an automatic cotton picking machine shown is different from the first embodiment in that after the overall wear average value of the picking spindles 2 of the corresponding row is determined by the first embodiment, when the picking spindles 2 of the corresponding row are inspected and repaired, due to the large number of picking spindles 2, it is necessary to quickly and accurately determine the wear condition of each picking spindle 2, and a single inspection cylinder 7 corresponding to the conduction rod 6 is fixed on the general inspection rod 8, the end of the conduction rod 6 is plugged into the general inspection rod 8 and extends to the inner cavity of the single inspection cylinder 7, the inner cavity of the single inspection cylinder 7 is slidably connected with a detection piston plate 22 fixed to the end of the conduction rod 6, and a single air pressure sensor 23 is installed at the end of the detection piston plate 22 away from the conduction rod 6, and the input end of the damage detection module is connected to the signal of the single air pressure sensor 23. During the inspection, each picking spindle 2 is driven to rotate through the picking spindle drive assembly 1, and the rotating picking spindle 2 pulls the hair surface on the corresponding detection hair disk 5, and transmits the force to the conduction rod 6, which drives the detection piston plate 22 to move, and the single air pressure sensor 23 detects the air pressure change in the inner cavity of the single inspection cylinder 7, and sends the air pressure value to the damage detection module, and the damage detection module sends the detection result to the damage analysis module. The damage analysis module determines the wear state of the corresponding picking spindle 2, and sends the wear state to the maintenance personnel through the reminder module, so that the maintenance personnel can quickly determine the wear state of each picking spindle 2. When the cotton picking head is inspected, the wear condition of the corresponding picking spindle 2 can be judged intuitively and accurately, thereby improving the cotton picking quality and the clean cotton picking rate of the cotton picking head.

[0039] In addition, a single elastic member 25 is installed on the side of the detection piston plate 22 close to the transmission rod 6. By setting the single elastic member 25, the force acting on the transmission rod 6 will be transmitted to the single elastic member 25, and then transmitted to the total inspection rod 8 through the single elastic member 25, which does not affect the detection component's detection of the stress state of the entire total inspection rod 8. The end of the single inspection tube 7 away from the transmission rod 6 is connected to a single adjustment port 24, and a solenoid valve 2 is installed on the single adjustment port 24. The single adjustment port 24 is connected to the output end of the air pump, and the input end of the sensitive adjustment module is connected to the signal of the single air pressure sensor 23, and the output end of the sensitive adjustment module is connected to the signal of the solenoid valve 2. By filling the end of the single inspection tube 7 and the detection piston plate 22 with gases of different air pressures, By adjusting the force applied to the detection piston plate 22, and then adjusting the degree of compression of the gas in the inner cavity of the single inspection tube 7 by the conduction rod 6 when the force is applied, it is convenient to adjust the corresponding detection sensitivity according to different types of picking ingots 2. When it is necessary to adjust the sensitivity of the detection of a single picking ingot 2, the air pump is controlled to work and the solenoid valve 2 is opened through the sensitivity adjustment module. The air pump inflates toward the single adjustment port 24. The high-pressure gas pushes the detection piston plate 22 to move, and the air pressure at the end of the single inspection tube 7 is detected through the single air pressure sensor 23. The single air pressure sensor 23 sends the air pressure value to the sensitivity adjustment module. The sensitivity adjustment module determines whether the air pressure value of the single air pressure sensor 23 reaches the preset value, and then controls the state of the air pump and the solenoid valve 2 to complete the sensitivity adjustment work.

[0040] Preferably, refer to Figure 7 , on one side of the detection hair disk 5 close to the spindle 2, a hook surface brush holder 10 is detachably connected. A guide ring 21 is fixed on the detection hair disk 5, and the guide ring 21 is slidably inserted into the conduction rod 6. By providing a detachably replaceable hook surface brush holder 10, the side of the hook surface brush holder 10 close to the spindle 2 is a rough surface. After the hook surface brush holder 10 itself is worn, the hook surface brush holder 10 can be quickly replaced, reducing the use cost. Moreover, the detection hair disk 5 is movably connected to the conduction rod 6 through the guide ring 21, so that the hook surface brush holder 10 can always be closely attached to the surface of the spindle 2, improving the accuracy of detecting the wear degree of the spindle 2.

[0041] Combined with the current actual requirements, the above-mentioned implementation manner adopted in this application, the protection scope is not limited thereto. Within the scope of knowledge possessed by those skilled in the art, various changes made without departing from the concept of this application still fall within the protection scope of the present invention.

Claims

1. A cotton picking head for an automatic cotton picker, comprising a machine body, wherein an end spindle driving assembly (1) for driving the operation of end spindles (2) and a doffer driving assembly (3) for driving the operation of a doffer (4) are respectively installed on the machine body; the end spindles (2) are arranged in multiple rows, and multiple end spindles (2) are arranged in each row; the doffer (4) is arranged corresponding to the end spindles (2), and is characterized in that, Further included are: A detection mechanism, which is arranged downstream of the cotton stripping plate (4) and corresponds to one row of picking spindles (2). The detection mechanism includes a general inspection rod (8), a plurality of conduction rods (6) corresponding to the picking spindles (2), and a detection wool disc (5) installed at the end of the conduction rod (6) and abutting against the outer ring of the picking spindle (2). One end of the conduction rod (6) far from the detection wool disc (5) is connected to the general inspection rod (8). Detection components are arranged at both ends of the general inspection rod (8) and are connected to the machine body through the detection components. The detection components include a squeezing chamber (11) arranged at the end of the general inspection rod (8) and close to the detection wool disc (5), and a detection chamber (12) connected to the machine body. The detection chamber (12) is communicated with the end of the squeezing chamber (11). Limiting plates (15) are slidably connected to both ends of the inner cavity of the squeezing chamber (11). The inner cavity of the squeezing chamber (11) is filled with a pressurized liquid located between the two limiting plates (15). A main air pressure sensor (16) is installed in the detection chamber (12); A cotton picking intelligent detector (9), which is arranged on one side of the machine body. The cotton picking intelligent detector (9) is provided with a damage detection module, a damage analysis module and a warning module. The input end of the damage detection module is signal-connected to the main air pressure sensor (16), the output end of the damage detection module is signal-connected to the damage analysis module, and the output end of the damage analysis module is signal-connected to the warning module.

2. The cotton picking head for an automatic cotton picker according to claim 1, characterized in that: A limiting block fixed to the inner wall of the squeezing chamber (11) is arranged on one side of each limiting plate (15) close to the pressurized liquid. The two limiting plates (15) are connected in series through an elastic rope passing through the pressurized liquid.

3. The cotton picking head for an automatic cotton picker according to claim 1, characterized in that: An abutting sleeve (13) abutting against the squeezing chamber (11) is sleeved on the end of the general inspection rod (8). The outer ring of the abutting sleeve (13) is of an arc structure, and the abutting surface between the squeezing chamber (11) and the abutting sleeve (13) is an elastic abutting surface (14).

4. The cotton picking head for an automatic cotton picker according to claim 1, characterized in that: A balance piston plate (17) is slidably connected to the inner cavity of each detection chamber (12). The main air pressure sensor (16) is installed on the balance piston plate (17). A main elastic member (18) is installed on one side of the balance piston plate (17) far from the squeezing chamber (11). The ends of the two detection chambers (12) far from the squeezing chamber (11) are connected in series through a balance pipe (19).

5. The cotton picking head for an automatic cotton picker according to claim 4, characterized in that: A main adjustment port (20) is connected to the balance pipe (19). An air pump 1 is externally connected to the main adjustment port (20). An electromagnetic valve 1 is installed on the main adjustment port (20). A sensitivity adjustment module is also arranged on the cotton picking intelligent detector (9). The input end of the sensitivity adjustment module is signal-connected to the main air pressure sensor (16), and the output end of the sensitivity adjustment module is respectively signal-connected to the electromagnetic valve 1 and the air pump.

6. The cotton picking head for an automatic cotton picker according to claim 5, characterized in that: A single inspection cylinder (7) corresponding to the conduction rod (6) is fixed on the total inspection rod (8). The end of the conduction rod (6) is inserted into the total inspection rod (8) and extends into the inner cavity of the single inspection cylinder (7). A detection piston plate (22) fixed to the end of the conduction rod (6) is slidably connected in the inner cavity of the single inspection cylinder (7). A single air pressure sensor (23) is installed at one end of the detection piston plate (22) away from the conduction rod (6). The input end of the damage detection module is signal-connected to the single air pressure sensor (23).

7. The cotton picking head for an automatic cotton picker according to claim 6, characterized in that: A single elastic member (25) is installed on one side of the detection piston plate (22) close to the conduction rod (6). A single adjustment port (24) is connected to one end of the single inspection cylinder (7) away from the conduction rod (6). A second solenoid valve is installed on the single adjustment port (24). The single adjustment port (24) is communicated with the output end of the air pump. The input end of the sensitivity adjustment module is signal-connected to the single air pressure sensor (23). The output end of the sensitivity adjustment module is signal-connected to the second solenoid valve.

8. The cotton picking head for an automatic cotton picker according to claim 1, characterized in that: A hook surface brush holder (10) is detachably connected to one side of the detection hair disc (5) close to the spindle (2). A guide ring (21) is fixed on the detection hair disc (5). The guide ring (21) is slidably inserted into the conduction rod (6).

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