Steering wheel, steering wheel monitoring system and steering state monitoring method thereof
By integrating the force measuring head and counter on the loader steering wheel, the steering force is collected and monitored in real time, the problem of difficult feedback on the handling force changes in the prior art is solved, and accurate monitoring and feedback on the steering force is achieved, which improves driving safety and experience.
Patent Information
- Application Number
- CN202510021328.X
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- Filing Date
- 2025-01-07
- Publication Date
- 2025-04-11
AI Technical Summary
After using the steering wheel of the existing loader for a period of time, the handling force may become larger or smaller, but the lack of a fault feedback mechanism, which leads the driver to misunderstand it as a normal phenomenon, affecting the handling and safety of the entire machine.
The force measuring head is integrated on the steering wheel, and the steering force is collected in real time. Through the coordination of the entire electronic control unit and the counter, a database is established for data comparison, and the steering force is judged in real time whether it is within the normal range and output feedback.
Real-time and accurate acquisition and status monitoring of steering forces are achieved, accurate feedback is provided, driving safety and experience is improved, and important data support is provided for vehicle performance analysis and maintenance.
Smart Images
Figure CN119796305A_ABST
Abstract
Description
Technical Field
[0001] The invention belongs to the technical field of vehicle steering systems, and in particular relates to a steering wheel, a steering wheel monitoring system and a steering state monitoring method thereof. Background Art
[0002] Loaders, as one of the main members of earth-moving machinery, play an increasingly important role in the fields of shoveling and loading. For most loaders, the steering of the loader is achieved by operating the steering wheel, or more precisely, the steering operation of the loader is achieved by the driver holding the ball head and rotating the steering wheel.
[0003] In recent years, with the development of society, drivers' pursuit of loader comfort has become more and more obvious. The steering wheel, as the part that directly contacts the driver, will greatly improve the driver's subjective impression of the whole machine if its operating force is moderate, smooth and linear.
[0004] The structure of the existing loader steering wheel is relatively simple, generally consisting of a ring-shaped force measuring head, a connecting block, a horn, a ball head and some auxiliary buttons. Since the front and rear frames of the loader are generally hinged structures, the steering angle is large and the number of turning circles is large. Therefore, when operating, the operator holds the ring-shaped force measuring head with one hand and presses the ball head with the other hand to rotate the steering wheel. The operating force is transmitted downward to the steering gear through the connecting block to achieve steering. Before the whole machine leaves the factory, the manufacturer will conduct factory inspection, test drive and debugging of the products leaving the factory, so the operator’s steering wheel comfort is generally good after purchasing a new car.
[0005] However, the whole machine manufacturer only debugs the products after they leave the factory, and the manufacturer cannot directly track the comfort of the steering wheel after they leave the factory. After the operator uses it for a period of time, some steering wheels may have a larger or smaller control force. At this time, the steering wheel has no fault feedback, and the operator often does not realize that the steering wheel is faulty and thinks it is a normal phenomenon, which leads to misunderstanding of the whole machine's controllability and affects the judgment of the whole machine's status, thus affecting the smoothness and safety of use. Summary of the invention
[0006] In view of the problem that the steering force is difficult to feedback in the prior art, which affects the control of the whole machine, a steering wheel, a steering wheel monitoring system and a steering state monitoring method thereof are proposed. The present invention provides the following technical solutions: A steering wheel comprises a control wheel, the control wheel comprises a grip and a connecting block, a force measuring head for identifying steering force is installed on the control wheel, the force measuring head is arranged outside the axis of the control wheel, after the force measuring head is gripped and steering is performed, the force measuring head collects the steering force.
[0007] Preferably, the force measuring head includes a column, a steering force sensor and a covering, the column is connected to the control wheel, the steering force sensor is arranged on the outside of the column and is rotatably connected to the column, and the covering covers the surface of the steering force sensor and is rigidly connected to the steering force sensor; when the operator steers by turning the force measuring head, the covering rotates around the column, the column squeezes the steering force sensor, and the steering force sensor collects the steering force of the operator when steering.
[0008] Preferably, the mounting is arranged on a connecting block.
[0009] A steering wheel monitoring system comprises a steering wheel, an electronic control unit of the whole machine and a counter for identifying the number of rotations of the steering wheel. Both the steering force sensor and the counter are communicatively connected with the electronic control unit of the whole machine.
[0010] A steering state monitoring method, the steps comprising: S1, preset database, establish a database according to the number of steering wheel rotations n per unit time and the corresponding control force f; S2, collecting actual operation data. When the operator turns the steering wheel to steer, the whole machine electronic control unit collects the operator's operating force f and the number of turns of the steering wheel per unit time n; S3, data comparison and output; compare the control force F and the number of steering wheel rotations n per unit time with the data in the database. If it is less than the control force corresponding to the number of steering wheel rotations n per unit time in the database, output: steering force too small; if it matches, output: steering force appropriate; if it is greater, output: steering force too large.
[0011] Preferably, the database is provided with intervals (0, n1), [n1, n2] and (n2, +∞) regarding the number of rotations of the steering wheel per unit time; In the interval (0, n1), the corresponding steering force is divided into the intervals (0, F1), [F1, F2], and (F2, +∞), which correspond to the steering force being too small, appropriate, and too large, respectively; In the interval [n1, n2], the corresponding steering force is divided into the intervals (0, F3), [F3, F4], and (F4, +∞), which correspond to the steering force being too small, appropriate, and too large, respectively; In the interval (n2, +∞), the corresponding steering force is divided into the intervals (0, F5), [F5, F6], and (F6, +∞), which correspond to steering forces that are too small, appropriate, and too large, respectively.
[0012] Preferably, in step S3, it is determined whether the number of steering turns per unit time is less than n1 turns. If so, it is determined whether the steering force is less than F1. If so, it is output: the steering force is too small; if not, it is determined whether the steering force is greater than F2. If so, it is output: the steering force is too large; if not, it is output: the steering force is appropriate; if the number of steering turns per unit time is not less than n1 turns, it is continued to determine whether the number of steering turns is greater than n2: If yes, first determine whether the steering force is less than F5. If yes, output: steering force is too small. If no, then determine whether the steering force is greater than F6. If yes, output: steering force is too large. If no, output: steering force is appropriate. If not, first determine whether the steering force is less than F3. If so, output: steering force is too small; if not, then determine whether the steering force is greater than F4. If so, output: steering force is too large; if not, output: steering force is appropriate.
[0013] Preferably, the whole machine electronic control unit is electrically connected to a display, and when the steering force is too large or too small, the display reminds the operator to check whether the steering system is normal.
[0014] Compared with the prior art, the present invention has the following beneficial effects: 1. By integrating a force measuring head on the steering wheel, the steering force can be collected in real time and accurately, providing key data support for subsequent driving status monitoring and vehicle performance analysis, which helps to improve driving safety and driving experience; 2. By comparing the preset database with the actual operating data and dividing the number of steering circles and steering force into intervals, it can more carefully evaluate the steering status, provide more accurate feedback and suggestions to the driver, and enhance the accuracy and safety of driving; 3. The steering force data collected by the whole machine electronic control unit provides designers with valuable samples, which helps to deeply study the law of steering wheel steering force attenuation, thereby guiding the subsequent design and improvement of the steering gear. At the same time, these data also provide vehicle maintenance personnel with real-time status monitoring information, promoting the optimization of maintenance work and improving efficiency. BRIEF DESCRIPTION OF THE DRAWINGS
[0015] Figure 1 is a schematic structural diagram of a steering wheel of the present invention; Figure 2 It is a schematic diagram of the structure of the force measuring head; In the accompanying drawings, 1, operating panel; 11, handle; 12, connecting block; 2, force measuring head; 21, column; 22, steering force sensor; 23, cover; 3, counter. DETAILED DESCRIPTION
[0016] In order to enable those skilled in the art to better understand the technical solution of the present invention, the technical solution of the present invention is clearly and completely described below in conjunction with the accompanying drawings of the present invention. The directional words mentioned in the following embodiments, such as "up", "down", "left" and "right", etc., are only reference to the directions of the accompanying drawings. Therefore, the directional words used are used to illustrate rather than limit the invention.
[0017] like Figure 1 and Figure 2 As shown, a steering wheel includes a control wheel 1, and the control wheel 1 includes a handle 11 and a connecting block 12. The handle 11 is not limited to the circular ring type shown in the figure. A dynamometer 2 for identifying steering force is installed on the control wheel 1. The dynamometer 2 is arranged outside the axis of the control wheel 1. After turning by holding the dynamometer 2, the dynamometer 2 collects the steering force, which can collect the steering force in real time and accurately, providing key data support for subsequent driving status monitoring and vehicle performance analysis.
[0018] Specifically, the force measuring head 2 includes a column 21, a steering force sensor 22 and a covering 23. The column 21 is connected to the control wheel 1, the steering force sensor 22 is arranged on the outside of the column 21 and is rotatably connected to the column 21, and the covering 23 covers the surface of the steering force sensor 22 and is rigidly connected to the steering force sensor 22; when the operator turns the force measuring head 2, the covering 23 rotates around the column 21, the column 21 squeezes the steering force sensor 22, and the steering force sensor 22 collects the steering force of the operator when turning; the force measuring head 2 has a reasonable structural design, and the rigid connection between the steering force sensor 22 and the covering 23 ensures the accuracy of steering force transmission. At the same time, the existence of the covering 23 also improves the operator's grip comfort and the stability of the steering operation.
[0019] Furthermore, the installation is arranged on the connection block 12 to facilitate the distinction between normal operation and detection operation.
[0020] A steering wheel monitoring system includes a steering wheel, an electronic control unit and a counter 3 for identifying the number of steering wheel rotations. The counter 3 is divided into a detection end and a detection element. The detection end can be arranged on a dashboard on the lower side thereof, and the detection element can be arranged on a handle 11 of the steering wheel to facilitate the counter 3 to identify and count detection points. Specifically, a counter 3 that can identify relative angle relationships can also be selected; the steering force sensor 22 and the counter 3 are both connected to the electronic control unit of the whole machine for communication; specifically, the counter 3 can use a Hall element or a gyroscope.
[0021] A steering state monitoring method, the steps comprising: S1, preset database, establish a database according to the number of steering wheel rotations n per unit time and the corresponding control force f; S2, collecting actual operation data. When the operator turns the steering wheel to steer, the whole machine electronic control unit collects the operator's operating force f and the number of turns of the steering wheel per unit time n; S3, data comparison and output: compare the control force F and the number of steering wheel turns per unit time n with the data in the database. If it is less than the control force corresponding to the number of steering wheel turns per unit time n in the database, then output: steering force is too small; if it matches, then output: steering force is appropriate; if it is greater, then output: steering force is too large. By comparing the preset database with the actual operation data, the steering state can be judged in real time and accurately, providing timely feedback and suggestions to the driver, which helps to improve driving safety and driving experience.
[0022] Table 1 - Example of the relationship between steering wheel rotation and control force
[0023] Furthermore, the database is provided with intervals (0, n1), [n1, n2] and (n2, +∞) regarding the number of rotations of the steering wheel per unit time.
[0024] In the interval (0, n1), the corresponding steering force is divided into the intervals (0, F1), [F1, F2], and (F2, +∞), which correspond to steering forces that are too small, appropriate, and too large, respectively.
[0025] In the interval [n1, n2], the corresponding steering force is divided into the intervals (0, F3), [F3, F4], and (F4, +∞), which correspond to steering forces that are too small, appropriate, and too large, respectively.
[0026] In the interval (n2, +∞), the corresponding steering force is divided into the intervals (0, F5), [F5, F6], and (F6, +∞), which correspond to steering forces that are too small, appropriate, and too large, respectively.
[0027] The steering wheel rotation process can be simplified into three stages: acceleration stage, constant speed stage and deceleration stage. Since these three stages occur every time the steering wheel is turned, in order to simplify the calculation, the default operating force is positively correlated with the number of steering circles per unit time, that is, the different number of steering wheel turns per unit time has different corresponding reasonable range values of operating force. By dividing the number of steering circles and steering force into different intervals, the steering state can be evaluated more meticulously, providing the driver with more accurate feedback and suggestions, which helps to improve driving accuracy and safety.
[0028] Further, in step S3, it is determined whether the number of steering turns per unit time is less than n1. If so, it is determined whether the steering force is less than F1. If so, it is output: the steering force is too small; if not, it is determined whether the steering force is greater than F2. If so, it is output: the steering force is too large; if not, it is output: the steering force is appropriate; if the number of steering turns per unit time is not less than n1, it is further determined whether the number of steering turns is greater than n2: If the number of steering turns is greater than n2, first determine whether the steering force is less than F5. If so, output: steering force is too small; if not, then determine whether the steering force is greater than F6. If so, output: steering force is too large; if not, output: steering force is appropriate; If the number of steering circles is not greater than n2, first determine whether the steering force is less than F3. If so, output: steering force is too small; if not, then determine whether the steering force is greater than F4. If so, output: steering force is too large; otherwise, output: steering force is appropriate.
[0029] Furthermore, the electronic control unit of the whole machine is electrically connected to a display. When the steering force is too large or too small, the display reminds the operator to check whether the steering system is normal, and recommends that the machine be used again after the problem is solved.
[0030] This patent uses the steering force sensor 22 and the counter 3 to collect and analyze the steering force of the steering wheel. When the steering force is abnormal, it reminds the operator to check the problem and repair it in time, which is beneficial to extend the service life of the steering system, improve the handling experience, and reduce brand misunderstandings.
[0031] The whole machine designer can collect and analyze the background steering force data, provide samples for the designer to study the steering wheel steering force attenuation law, which is beneficial to the designer's subsequent design and improvement of the steering gear.
Claims
1. A steering wheel, characterized in that: The invention comprises a control panel (1), wherein the control panel (1) comprises a grip (11) and a connection block (12); a force measuring head (2) for identifying steering force is mounted on the control panel (1); the force measuring head (2) is arranged outside the axis of the control panel (1); after the force measuring head (2) is gripped and steering is performed, the force measuring head (2) collects steering force.
2. The steering wheel according to claim 1, characterized in that: The force measuring head (2) comprises a column (21), a steering force sensor (22) and a covering (23); the column (21) is connected to the control panel (1); the steering force sensor (22) is arranged outside the column (21) and is rotatably connected to the column (21); the covering (23) covers the surface of the steering force sensor (22) and is rigidly connected to the steering force sensor (22); when an operator turns the force measuring head (2) by turning the force measuring head (2), the covering (23) rotates around the column (21), the column (21) presses the steering force sensor (22), and the steering force sensor (22) collects the steering force of the operator when turning.
3. The steering wheel according to claim 1 or 2, characterized in that: The mounting is arranged on a connection block (12).
4. A steering wheel monitoring system, characterized in that: The invention comprises a steering wheel as claimed in claim 2, and further comprises an electronic control unit for the whole machine and a counter (3) for identifying the number of rotations of the steering wheel, wherein the steering force sensor (22) and the counter (3) are both communicatively connected to the electronic control unit for the whole machine.
5. A steering state monitoring method, characterized in that: Using the steering wheel monitoring system as claimed in claim 4, the steps include: S1, preset database, establish a database according to the number of steering wheel rotations n per unit time and the corresponding control force f; S2, collecting actual operation data. When the operator turns the steering wheel to steer, the whole machine electronic control unit collects the operator's operating force f and the number of turns of the steering wheel per unit time n; S3, data comparison and output; compare the control force F and the number of steering wheel rotations n per unit time with the data in the database. If it is less than the control force corresponding to the number of steering wheel rotations n per unit time in the database, output: steering force too small; if it matches, output: steering force appropriate; if it is greater, output: steering force too large.
6. The steering state monitoring method according to claim 5, characterized in that: The database is provided with intervals (0, n1), [n1, n2] and (n2, +∞) regarding the number of rotations of the steering wheel per unit time; In the interval (0, n1), the corresponding steering force is divided into the intervals (0, F1), [F1, F2], and (F2, +∞), which correspond to the steering force being too small, appropriate, and too large, respectively; In the interval [n1, n2], the corresponding steering force is divided into the intervals (0, F3), [F3, F4], and (F4, +∞), which correspond to the steering force being too small, appropriate, and too large, respectively; In the interval (n2, +∞), the corresponding steering force is divided into the intervals (0, F5), [F5, F6], and (F6, +∞), which correspond to steering forces that are too small, appropriate, and too large, respectively.
7. The steering state monitoring method according to claim 6, characterized in that: In step S3, it is determined whether the number of steering turns per unit time is less than n1 turns. If so, it is determined whether the steering force is less than F1. If so, it is output: the steering force is too small; if not, it is determined whether the steering force is greater than F2. If so, it is output: the steering force is too large; if not, it is output: the steering force is appropriate; if the number of steering turns per unit time is not less than n1 turns, it is further determined whether the number of steering turns is greater than n2: If yes, first determine whether the steering force is less than F5. If yes, output: steering force is too small. If no, then determine whether the steering force is greater than F6. If yes, output: steering force is too large. If no, output: steering force is appropriate. If not, first determine whether the steering force is less than F3. If so, output: steering force is too small; if not, then determine whether the steering force is greater than F4. If so, output: steering force is too large; if not, output: steering force is appropriate.
8. The steering state monitoring method according to claim 5, characterized in that: The electronic control unit of the whole machine is electrically connected to a display. When the steering force is too large or too small, the display reminds the operator to check whether the steering system is normal.