Electric control steering wheel of unmanned plant protection vehicle

Abstract

This utility model discloses an electronically controlled steering wheel for an unmanned agricultural vehicle, including a steering wheel body and a steering wheel shaft. A transmission gear is mounted on the steering wheel shaft, which is connected to a driven gear and a driving gear. A mechanism housing is also provided on the outside of the steering wheel shaft at positions corresponding to the driven gear, driving gear, and transmission gear. A partition is provided inside the mechanism housing, with the driving gear and driven gear located on one side of the partition and the driving gear on the other side. When the steering wheel shaft rotates, the transmission gear drives the driven gear to rotate, allowing the steering angle information to be monitored by an angular displacement sensor at all times. A switching push rod can engage or disengage the driving gear with the transmission gear, thereby realizing automatic steering by a stepper motor driving the steering wheel shaft to rotate or manual steering by manually rotating the steering wheel body. The two modes can be switched. The overall transmission structure is simple, facilitating production and subsequent maintenance.

Description

Technical Field

[0001] This utility model relates to the field of plant protection vehicle technology, specifically to an electronically controlled steering wheel for an unmanned plant protection vehicle. Background Technology

[0002] Agricultural vehicles are specialized machines used in agriculture and landscaping, primarily for spraying pesticides and fertilizers, as well as disinfection. They improve labor efficiency, reduce labor costs, and enable precise application of pesticides and fertilizers, thereby increasing crop yield and quality. Furthermore, some unmanned versions not only possess high automation and precision operation capabilities but are also better suited for hazardous or high-intensity operations, bringing significant convenience to agricultural production.

[0003] For agricultural vehicles to achieve autonomous driving, directional control is crucial. Constantly acquiring steering data is essential to determine the vehicle's position, enabling autonomous driving after modeling. However, autonomous agricultural vehicles often require manual intervention in special circumstances. Therefore, seamless switching between electronically controlled autonomous driving and manual driving is necessary. To address this, our company has designed and proposed a novel electronically controlled steering wheel for autonomous agricultural vehicles. Utility Model Content

[0004] To address the shortcomings of existing technologies, this utility model provides an electronically controlled steering wheel for unmanned plant protection vehicles, which enables convenient switching between electronically controlled autonomous driving and manual driving.

[0005] To solve the above-mentioned technical problems, this utility model provides the following technical solution:

[0006] An electronically controlled steering wheel for an unmanned agricultural vehicle includes a steering wheel body and a steering wheel shaft. A transmission gear is mounted on the steering wheel shaft, and the transmission gear is connected to a driven gear and a driving gear respectively. A mechanism housing is also provided on the outside of the steering wheel shaft at the positions corresponding to the driven gear, the driving gear and the transmission gear.

[0007] The mechanism housing has a partition plate inside. The driving gear and the driven gear are located on one side of the partition plate, and the driving gear is located on the other side of the partition plate. An angular displacement sensor that is connected to the driven gear is fixedly installed on one side of the partition plate. A stepper motor is fixedly installed on the other side of the partition plate. The stepper motor is connected to the movable shaft through a universal joint. The driving gear is installed on the movable shaft.

[0008] Both ends of the movable shaft are connected to the slider through bushings. A limiting frame is fixed between the middle partition and the side wall of the mechanism housing and sleeved on the outside of the slider. The slider is slidably connected to the groove of the limiting frame. A switching push rod is movably hinged on the slider at the end of the movable shaft away from the stepper motor. The switching push rod is located between the side of the slider away from the steering wheel shaft and the inner side wall of the groove.

[0009] Preferably, the outer shell of the mechanism is a modular shell.

[0010] Preferably, the stepper motor is located below the movable shaft, and the switching push rod corresponds to the upper end of the movable shaft.

[0011] Preferably, the partition plate is provided with a clearance groove at the position corresponding to the drive gear and the drive gear.

[0012] Preferably, the system further includes a controller, a switching switch, and a stepper driver. The angular displacement sensor and the switching switch are both connected to the controller via signal connection. The controller is connected to the switching push rod and the stepper driver via signal connection. The stepper driver is connected to the stepper motor via signal connection.

[0013] Compared with the prior art, the present invention has the following beneficial effects:

[0014] When the steering wheel shaft of this invention rotates, it drives the driven gear to rotate through the transmission gear, so that the steering angle information is constantly monitored by the angular displacement sensor. The switching push rod can drive the active gear to mesh or disengage with the transmission gear, thereby realizing automatic steering by driving the steering wheel shaft to rotate through the stepper motor or manual steering by manually rotating the steering wheel body. The two modes can be switched. The overall transmission structure is simple, which facilitates production and later maintenance, improves operational reliability, and realizes the purpose of conveniently switching between electronically controlled automatic driving and manual driving of unmanned agricultural vehicles. Attached Figure Description

[0015] Figure 1 This is a schematic diagram of the overall structure of this utility model;

[0016] Figure 2 This is a schematic diagram of the internal structure of the outer shell of the present invention;

[0017] Figure 3 This is a top view of the assembly of the transmission gear, driven gear, and driving gear of this utility model.

[0018] Figure 4 This is a schematic diagram of the internal structure of the limiting frame of this utility model;

[0019] Figure 5 This is a schematic diagram of the system of this utility model.

[0020] In the diagram: 1. Steering wheel body; 2. Steering wheel shaft; 3. Transmission gear; 4. Driven gear; 5. Driving gear; 6. Mechanism housing; 7. Middle partition; 701. Clearance groove; 8. Angular displacement sensor; 9. Stepper motor; 10. Universal joint; 11. Movable shaft; 12. Bushing; 13. Slider; 14. Limit bracket; 1401. Slide groove; 15. Switching push rod; 16. Controller; 17. Switch; 18. Stepper driver. Detailed Implementation

[0021] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0022] like Figure 1-5 As shown, this utility model provides a technical solution: an electronically controlled steering wheel for an unmanned plant protection vehicle, including a steering wheel body 1 and a steering wheel shaft 2. A transmission gear 3 is installed on the steering wheel shaft 2. The transmission gear 3 is connected to the driven gear 4 and the driving gear 5 respectively. A mechanism housing 6 is also provided on the outside of the steering wheel shaft 2 at the positions corresponding to the driven gear 4, the driving gear 5 and the transmission gear 3. The mechanism housing 6 is a spliced ​​housing.

[0023] The inner shell 6 of the mechanism is provided with a partition plate 7. The driving gear 5 and the driven gear 4 are located on one side of the partition plate 7, and the driving gear 5 is located on the other side of the partition plate 7. The partition plate 7 is provided with a clearance groove 701 at the position corresponding to the driving gear 5.

[0024] An angular displacement sensor 8, which is connected to the driven gear 4, is fixedly installed on one side of the partition plate 7. A stepper motor 9 is fixedly installed on the other side of the partition plate 7. The stepper motor 9 is connected to the movable shaft 11 through a universal joint 10. The stepper motor 9 is located below the movable shaft 11. The switching push rod 15 corresponds to the upper end position of the movable shaft 11. The driving gear 5 is installed on the movable shaft 11.

[0025] Both ends of the movable shaft 11 are connected to the slider 13 through the bushing 12. A limiting frame 14 is fixed between the middle partition 7 and the side wall of the mechanism housing 6 and sleeved outside the slider 13. The slider 13 is slidably connected to the slide groove 1401 of the limiting frame 14. A switching push rod 15 is movably hinged on the slider 13 at the end of the movable shaft 11 away from the stepper motor 9. The switching push rod 15 is set between the side of the slider 13 away from the steering wheel shaft 2 and the inner side wall of the slide groove 1401.

[0026] It also includes a controller 16, a switch 17 and a stepper driver 18. The angular displacement sensor 8 and the switch 17 are both connected to the controller 16. The controller 16 is connected to the switch push rod 15 and the stepper driver 18 respectively. The stepper driver 18 is connected to the stepper motor 9.

[0027] Working principle:

[0028] Switching between electronically controlled automatic driving and manual driving is achieved by switching switch 17. Controller 16 drives switch push rod 15 to extend or shorten to complete the mode switch. When steering wheel shaft 2 rotates, transmission gear 3 drives driven gear 4 to rotate, so that steering angle information is constantly monitored by angular displacement sensor 8. When switching to electronically controlled automatic driving, push rod extends, drive gear 5 meshes with transmission gear 3, stepper driver 18 drives stepper motor 9 to work, and the output shaft of stepper motor 9 drives steering wheel shaft 2 to automatically turn according to the specified rotation direction and angle. When switching to manual driving, push rod shortens, drive gear 5 separates from transmission gear 3, stepper motor 9 stops working, and manual intervention is possible by turning steering wheel body 1 to achieve manual steering.

[0029] It should be noted that, in this document, terms such as “comprising,” “including,” or any other variations thereof are intended to cover non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements includes not only those elements but also other elements not expressly listed, or elements inherent to such process, method, article, or apparatus.

[0030] Although embodiments of the present invention have been shown and described, it will be understood by those skilled in the art that various changes, modifications, substitutions and alterations can be made to these embodiments without departing from the principles and spirit of the present invention, the scope of which is defined by the appended claims and their equivalents.

Claims

1. An electronically controlled steering wheel for an unmanned agricultural vehicle, comprising a steering wheel body (1) and a steering wheel shaft (2), characterized in that: A transmission gear (3) is installed on the steering wheel shaft (2). The transmission gear (3) is connected to the driven gear (4) and the driving gear (5) respectively. A mechanism housing (6) is also provided on the outside of the steering wheel shaft (2) at the positions corresponding to the driven gear (4), the driving gear (5) and the transmission gear (3). The housing (6) of the mechanism is provided with a partition plate (7). The driving gear (5) and the driven gear (4) are located on one side of the partition plate (7). The driving gear (5) is located on the other side of the partition plate (7). An angular displacement sensor (8) that is connected to the driven gear (4) is fixedly installed on one side of the partition plate (7). A stepper motor (9) is fixedly installed on the other side of the partition plate (7). The stepper motor (9) is connected to the movable shaft (11) through a universal joint (10). The driving gear (5) is installed on the movable shaft (11). Both ends of the movable shaft (11) are connected to the slider (13) through bushings (12). A limiting frame (14) is fixed between the middle partition (7) and the side wall of the mechanism housing (6) and sleeved outside the slider (13). The slider (13) is slidably connected to the slide groove (1401) of the limiting frame (14). A switching push rod (15) is movably hinged on the slider (13) at the end of the movable shaft (11) away from the stepper motor (9). The switching push rod (15) is set between the side of the slider (13) away from the steering wheel shaft (2) and the inner side wall of the slide groove (1401).

2. The electronically controlled steering wheel of the unmanned agricultural vehicle according to claim 1, characterized in that: The outer shell (6) of the mechanism is a modular shell.

3. The electronically controlled steering wheel of the unmanned agricultural vehicle according to claim 1, characterized in that: The stepper motor (9) is located below the movable shaft (11), and the switching push rod (15) corresponds to the upper end of the movable shaft (11).

4. The electronically controlled steering wheel of the unmanned agricultural vehicle according to claim 1, characterized in that: The partition plate (7) is provided with a clearance groove (701) at the position corresponding to the drive gear (5) and the drive gear (5).

5. The electronically controlled steering wheel of the unmanned agricultural vehicle according to claim 1, characterized in that: It also includes a controller (16), a switch (17) and a stepper driver (18). The angular displacement sensor (8) and the switch (17) are both connected to the controller (16). The controller (16) is connected to the switch push rod (15) and the stepper driver (18) respectively. The stepper driver (18) is connected to the stepper motor (9).

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