Cotton picking head rotating speed sensor for cotton picker

Abstract

The utility model discloses a cotton picking head rotating speed sensor for a cotton picker, which comprises a shielding case, a rotating shaft is inserted in the shielding case, a reflective patch is fixed on one side wall of the rotating shaft, a telescopic rod is mounted on one side wall in the shielding case, a spring is sleeved on the outer side of the telescopic rod, a brush is fixed on a movable part of the telescopic rod, and a rotating shaft is fixed on the rotating shaft. A fixing frame of a U-shaped structure is arranged on the inner wall of the top end of the shielding cover, a two-way screw rod is installed in the fixing frame, and a guide rod is arranged below the two-way screw rod. The rotating speed sensor has the beneficial effects that the telescopic rod, the spring and the brush are arranged, in the rotating process of the rotating shaft, the telescopic rod and the spring are combined to perform buffer protection on the brush, and the brush can automatically clean cotton fibers attached to the reflective patch, so that the reflective patch is prevented from being blocked by the cotton fibers, the detection precision of the rotating speed sensor is ensured, and the service life of the rotating speed sensor is prolonged. The use performance of the rotating speed sensor is effectively improved.

Description

Technical Field

[0001] This utility model relates to the field of speed sensor technology, specifically to a cotton harvesting head speed sensor for cotton harvesters. Background Technology

[0002] A cotton harvester is a product used to harvest cotton. During the rotation of the cotton harvester's harvesting head, a speed sensor is needed to detect the speed of the harvesting head so that the operator can adjust the harvesting head to a suitable speed for harvesting cotton.

[0003] Existing cotton harvester head speed sensors detect the speed of the cotton harvester head by measuring a reflective patch fixed on the rotating shaft and counting the number of measurements. However, during cotton harvesting, external cotton fibers can enter the shielding cover along the rotating shaft and adhere to the reflective patch, which cannot be cleaned. This causes the cotton fibers to obstruct the reflective patch, affecting the sensor's detection accuracy. Therefore, there is an urgent need for a cotton harvester head speed sensor to solve these problems. Utility Model Content

[0004] (a) Technical problems to be solved

[0005] The technical problem to be solved by this utility model is to provide a cotton harvester head speed sensor with high detection accuracy, based on the current state of the technology.

[0006] (II) Technical Solution

[0007] This utility model is achieved through the following technical solution: This utility model proposes a cotton harvesting head speed sensor for a cotton harvester, including a shielding cover, a rotating shaft inserted inside the shielding cover, a reflective patch fixed on one side wall of the rotating shaft, a telescopic rod installed on one side wall of the inner side of the shielding cover, a spring sleeved on the outer side of the telescopic rod, a brush fixed on the movable part of the telescopic rod, a U-shaped fixing frame provided on the inner wall of the top of the shielding cover, a bidirectional screw installed inside the fixing frame, and a guide rod provided below the bidirectional screw.

[0008] Furthermore, the reflective patch is connected to the rotating shaft by screws, and the reflective patch has an arc-shaped structure.

[0009] By adopting the above technical solution, the reflective patch can detect the rotation speed detector, and thus detect the rotation speed of the shaft.

[0010] Furthermore, the fixing part of the telescopic rod is fixed inside the shielding cover by screws, and the spring is welded to the outer wall of the telescopic rod.

[0011] By adopting the above technical solution, the telescopic rod combined with the spring can provide buffer protection for the brush.

[0012] Furthermore, the brush is fixed to the movable part of the telescopic rod by screws, and the brush is a flexible cleaning brush.

[0013] By adopting the above technical solution, during the rotation of the shaft, the brush can automatically clean the cotton wool attached to the reflective patch, thereby avoiding obstruction of the reflective patch and ensuring the detection accuracy of the speed sensor.

[0014] Furthermore, the fixing frame is fixed to the inner wall of the top of the shielding cover by screws, and the bidirectional screw is rotatably installed in the fixing frame, with a knob connected to one end of the bidirectional screw.

[0015] By adopting the above technical solution, the knob can drive the bidirectional screw to rotate.

[0016] Furthermore, the guide rod is welded inside the fixed frame, and screw blocks are symmetrically sleeved on the guide rod and the bidirectional screw. A hexagonal limiting post is fixed on one side wall of the screw block, and a speed detector is installed between the limiting posts. The speed detector has internal hexagonal limiting holes on both sides, and the limiting posts are inserted into the limiting holes.

[0017] By adopting the above technical solution, during the rotation of the bidirectional screw, the screw block drives the limiting post to move under the action of the thread and the guide rod, thereby enabling the rapid installation and removal of the speed detector in conjunction with the limiting hole.

[0018] Furthermore, a connecting wire extends from the back wall of the speed detector, and the connecting wire passes through the shield.

[0019] By adopting the above technical solution, the data detected by the speed detector is transmitted to an external digital display device through the connection line, which makes it easier for staff to intuitively understand the speed of the cotton picking head.

[0020] (III) Beneficial Effects

[0021] Compared with the prior art, this utility model has the following advantages:

[0022] To address the problem that existing cotton harvester head speed sensors detect the speed of the cotton harvester head by measuring a reflective patch fixed to the rotating shaft and counting the number of measurements, the present invention addresses this issue. In this method, cotton fibers from outside the machine can enter the shielding cover along the rotating shaft and adhere to the reflective patch, which cannot be cleaned. This results in the cotton fibers obstructing the reflective patch and affecting the sensor's detection accuracy. This invention incorporates a telescopic rod, a spring, and a brush. During shaft rotation, the telescopic rod and spring work together to buffer and protect the brush, while the brush automatically cleans the cotton fibers adhering to the reflective patch, preventing obstruction and ensuring the speed sensor's detection accuracy. This effectively improves the performance of the speed sensor. Attached Figure Description

[0023] Figure 1 This is a schematic diagram of the structure of a cotton harvester head speed sensor for cotton harvesters according to the present invention;

[0024] Figure 2 This is a schematic diagram of the internal structure of the shielding cover in the cotton harvester head speed sensor of the cotton harvester described in this utility model;

[0025] Figure 3 This is a schematic diagram of the connection relationship between the fixing frame and the speed detector in a cotton harvester head speed sensor of the present invention.

[0026] The annotations in the attached figures are explained as follows:

[0027] 1. Shielding cover; 2. Rotating shaft; 3. Connecting wire; 4. Reflective patch; 5. Speed ​​detector; 6. Fixing bracket; 7. Telescopic rod; 8. Spring; 9. Brush; 10. Bidirectional screw; 11. Guide rod; 12. Screw block; 13. Limiting post; 14. Limiting hole; 15. Knob. Detailed Implementation

[0028] To make the objectives, technical solutions, and advantages of this utility model clearer, the present utility model will be further described in detail below with reference to the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of the present utility model and are not intended to limit the present utility model.

[0029] like Figures 1-3As shown, a cotton harvester head speed sensor for a cotton harvester in this embodiment includes a shielding cover 1, a rotating shaft 2 inserted inside the shielding cover 1, a reflective patch 4 fixed on one side wall of the rotating shaft 2, the reflective patch 4 can detect the speed of the rotating shaft 2 by detecting the speed detector 5, and thus detect the speed of the rotating shaft 2, a telescopic rod 7 is installed on one side wall inside the shielding cover 1, and a spring 8 is sleeved on the outside of the telescopic rod 7, the telescopic rod 7 and the spring 8 can buffer and protect the brush 9, the brush 9 is fixed on the movable part of the telescopic rod 7, during the rotation of the rotating shaft 2, the brush 9 can automatically clean the cotton lint attached to the reflective patch 4, thereby avoiding it from blocking the reflective patch 4 and ensuring the detection accuracy of the speed sensor, a U-shaped fixing frame 6 is provided on the inner wall of the top of the shielding cover 1, a bidirectional screw 10 is installed in the fixing frame 6, a guide rod 11 is provided below the bidirectional screw 10, the guide rod 11 limits and guides the movement of the screw block 12.

[0030] like Figures 1-3 As shown, in this embodiment, the reflective patch 4 is connected to the rotating shaft 2 by screws. The reflective patch 4 has an arc-shaped structure. The fixed part of the telescopic rod 7 is fixed inside the shielding cover 1 by screws. The spring 8 is welded to the outer wall of the telescopic rod 7. The brush 9 is fixed to the movable part of the telescopic rod 7 by screws. The brush 9 is a flexible cleaning brush.

[0031] like Figures 1-3 As shown, in this embodiment, the fixing frame 6 is fixed to the inner wall of the top of the shielding cover 1 by screws, and the bidirectional screw 10 is rotatably installed in the fixing frame 6. One end of the bidirectional screw 10 is connected to a knob 15.

[0032] Knob 15 can drive the bidirectional screw 10 to rotate. The guide rod 11 is welded inside the fixed frame 6. Screw blocks 12 are symmetrically sleeved on the guide rod 11 and the bidirectional screw 10. A hexagonal limiting post 13 is fixed on one side wall of the screw block 12. A speed detector 5 is installed between the limiting posts 13. The speed detector 5 has internal hexagonal limiting holes 14 on both sides of its side wall. The limiting post 13 is inserted into the limiting hole 14. During the rotation of the bidirectional screw 10, the screw block 12 drives the limiting post 13 to move under the action of the thread and the guide rod 11. In turn, the limiting hole 14 can be used to realize the quick installation and removal of the speed detector 5. A connecting wire 3 is led out from the back wall of the speed detector 5. The connecting wire 3 passes through the shield 1. The data detected by the speed detector 5 is transmitted to the external digital display device through the connecting wire 3, so that the staff can intuitively understand the speed of the cotton picking head.

[0033] The specific implementation process of this embodiment is as follows: In use, one end of the rotating shaft 2 is connected to the drive mechanism, and the other end is connected to the cotton picking head. Then, the connecting wire 3 is connected to the external digital display device, and the shielding cover 1 is fixed on the cotton picking machine. During the cotton picking process, the drive mechanism drives the cotton picking head to rotate through the rotating shaft 2 to pick cotton. During the rotation of the rotating shaft 2, the reflective patch 4 rotates together with the rotating shaft 2. The speed detector 5 can detect the reflective patch 4 once for every revolution of the rotating shaft 2. By calculating the number of times the reflective patch 4 is detected, the speed of the cotton picking head can be detected. During the testing process, the telescopic rod 7 and the spring 8 work together to buffer and protect the brush 9. The brush 9 can automatically clean the cotton wool attached to the reflective patch 4, thereby preventing it from blocking the reflective patch 4 and ensuring the detection accuracy of the speed sensor. When the speed detector 5 needs to be maintained, the double screw 10 is rotated by the knob 15. During the rotation of the double screw 10, the screw block 12 moves the limiting post 13 under the action of the thread and the guide rod 11. In turn, the limiting hole 14 can be used to realize the quick installation and removal of the speed detector 5.

[0034] The above description of the disclosed embodiments enables those skilled in the art to make or use the present invention. Various modifications to these embodiments will be readily apparent to those skilled in the art, and the general principles defined herein may be implemented in other embodiments without departing from the spirit or scope of the present invention. Therefore, the present invention is not to be limited to the embodiments shown herein, but is to be accorded the widest scope consistent with the principles and novel features disclosed herein.

Claims

1. A cotton harvester head speed sensor, characterized in that: The shield includes a shielding cover (1), a rotating shaft (2) is inserted inside the shielding cover (1), a reflective patch (4) is fixed on one side wall of the rotating shaft (2), a telescopic rod (7) is installed on one side wall of the shielding cover (1), a spring (8) is sleeved on the outside of the telescopic rod (7), a brush (9) is fixed on the movable part of the telescopic rod (7), a U-shaped fixing frame (6) is provided on the inner wall of the top of the shielding cover (1), a bidirectional screw (10) is installed inside the fixing frame (6), and a guide rod (11) is provided below the bidirectional screw (10).

2. The cotton harvester head speed sensor according to claim 1, characterized in that: The reflective patch (4) is connected to the rotating shaft (2) by screws, and the reflective patch (4) has an arc-shaped structure.

3. The cotton harvester head speed sensor according to claim 1, characterized in that: The fixed part of the telescopic rod (7) is fixed inside the shield (1) by screws, and the spring (8) is welded to the outer wall of the telescopic rod (7).

4. The cotton harvester head speed sensor according to claim 3, characterized in that: The brush (9) is fixed to the movable part of the telescopic rod (7) by screws, and the brush (9) is a flexible cleaning brush.

5. A cotton harvester head speed sensor according to claim 1, characterized in that: The fixing frame (6) is fixed to the inner wall of the top of the shield (1) by screws. The bidirectional screw (10) is rotatably installed in the fixing frame (6). One end of the bidirectional screw (10) is connected to a knob (15).

6. A cotton harvester head speed sensor according to claim 5, characterized in that: The guide rod (11) is welded inside the fixed frame (6). Screw blocks (12) are symmetrically sleeved on the guide rod (11) and the bidirectional screw (10). A hexagonal limiting post (13) is fixed on one side wall of the screw block (12). A speed detector (5) is installed between the limiting posts (13). A hexagonal limiting hole (14) is opened on both sides of the speed detector (5). The limiting post (13) is inserted into the limiting hole (14).

7. A cotton harvester head speed sensor according to claim 6, characterized in that: A connecting wire (3) is led out from the back wall of the speed detector (5), and the connecting wire (3) passes through the shield (1).

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