Steering transmission mechanism and its monitoring method

Abstract

The present invention relates to a steering transmission mechanism for a vehicle and a monitoring method thereof. The steering transmission mechanism includes: a steering wheel, a steering drive shaft, and a steering gear input shaft that are sequentially drivingly connected; a first front wheel and a second front wheel; a first angle sensor for detecting the rotation angle of the steering drive shaft; a second angle sensor for detecting the rotation angle of the steering gear input shaft; a third angle sensor for detecting the rotation angle of the first front wheel; a fourth angle sensor for detecting the rotation angle of the second front wheel; and a control unit. For the above-mentioned steering transmission mechanism, the rotation angles of the corresponding transmission mechanisms are detected in real time by the angle sensors, and the control unit determines whether each rotation angle is within the corresponding preset angle range. Thus, when the rotation angle is not within the preset angle range, inspection and repair are carried out in a timely manner to eliminate potential safety hazards of the steering transmission mechanism and prevent traffic accidents caused by steering failure during driving.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle steering systems, and particularly to a steering transmission mechanism and a monitoring method thereof. Background Art

[0002] The steering system is one of the important components of a vehicle. Among them, the steering transmission mechanism of medium and heavy-duty trucks generally consists of a steering wheel, a steering drive shaft, a steering gear, a steering arm, a steering tie rod, a front axle trapezoid, wheels and tires, etc. in sequence.

[0003] During the steering process of medium and heavy-duty trucks, any problem with a transmission structure will cause steering failure, such as cracking of the steering arm, wear of the ball joint, bending deformation of the tie rod, etc., and the driver cannot easily detect these problems. However, as the failure accumulates and intensifies, if sudden steering failure occurs during driving, it may lead to serious traffic accidents. Summary of the Invention

[0004] Based on this, it is necessary to provide a steering transmission mechanism and a monitoring method thereof that can real-time monitor the rotation angle of a vehicle steering system, so as to timely detect and repair problems when the steering system fails, and avoid traffic accidents caused by steering failure during vehicle driving.

[0005] According to one aspect of the present application, there is provided a steering transmission mechanism for a vehicle, the steering transmission mechanism comprising:

[0006] A steering wheel, a steering drive shaft and a steering gear input shaft that are sequentially drivingly connected;

[0007] A first front wheel and a second front wheel that are simultaneously driven by the steering gear input shaft;

[0008] A first rotation angle sensor, disposed on the steering drive shaft, for detecting the rotation angle of the steering drive shaft;

[0009] A second rotation angle sensor, disposed on the steering gear input shaft, for detecting the rotation angle of the steering gear input shaft;

[0010] A third rotation angle sensor, disposed on the first front wheel, for detecting the rotation angle of the first front wheel;

[0011] A fourth rotation angle sensor, disposed on the second front wheel, for detecting the rotation angle of the second front wheel; and

[0012] A control unit, electrically connected to the first rotation angle sensor, the second rotation angle sensor, the third rotation angle sensor and the fourth rotation angle sensor respectively.

[0013] The above-mentioned steering transmission mechanism is provided with a first angle sensor, a second angle sensor, a third angle sensor and a fourth angle sensor to detect in real time the rotation angles of the corresponding steering drive shaft, the input shaft of the steering gear, the rotation angle of the first front wheel and the rotation angle of the second front wheel, and transmit the detected rotation angles to the control unit in real time, so as to determine whether the rotation angles are within the corresponding preset angle ranges. Thus, when the rotation angles are not within the preset angle ranges, timely inspection and repair can be carried out to eliminate the potential safety hazards of the steering transmission mechanism and prevent traffic accidents caused by steering failure during driving.

[0014] In one embodiment, the steering transmission mechanism further includes:

[0015] A first indicator light, which is electrically connected to the control unit and is arranged on the first angle sensor;

[0016] A second indicator light, which is electrically connected to the control unit and is arranged on the second angle sensor. The first indicator light and the second indicator light can be used together to indicate that the rotation angle of the input shaft of the steering gear is not within the second preset angle range;

[0017] A third indicator light, which is electrically connected to the control unit and is arranged on the third angle sensor; the second indicator light and the third indicator light can be used together to indicate that the rotation angle of the first front wheel is not within the third preset angle range;

[0018] A fourth indicator light, which is electrically connected to the control unit and is arranged on the fourth angle sensor; the third indicator light and the fourth indicator light can be used together to indicate that the rotation angle of the second front wheel is not within the fourth preset angle range.

[0019] In one embodiment, the steering transmission mechanism further includes a steering tie rod. One end of the steering tie rod is drivingly connected to the input shaft of the steering gear, and the other end is drivingly connected to the first front wheel.

[0020] In one embodiment, the steering transmission mechanism further includes a steering arm. One end of the steering arm is drivingly connected to the end of the steering tie rod away from the input shaft of the steering gear, and the other end is drivingly connected to the first front wheel.

[0021] In one embodiment, the steering transmission mechanism further includes a first front axle kingpin, a first steering knuckle, and a front axle;

[0022] The first front axle kingpin is used to connect the first steering knuckle and one end of the front axle close to the first front wheel;

[0023] One end of the first steering knuckle is drivingly connected to the steering arm, and the other end is drivingly connected to the front axle;

[0024] One end of the first front wheel is connected to one end of the front axle, and the second front wheel is connected to the other end of the front axle far from the first front wheel.

[0025] In one embodiment, the steering transmission mechanism further includes a second front axle kingpin and a second steering knuckle;

[0026] The second front axle kingpin is used to connect the second steering knuckle and one end of the front axle close to the second front wheel;

[0027] The second steering knuckle is drivingly connected to the front axle.

[0028] According to another aspect of the present application, there is provided a monitoring method for monitoring a steering transmission mechanism, which is applicable to any one of the steering transmission mechanisms proposed in the above first aspect. The monitoring method includes the following steps:

[0029] Real-time detect and obtain a first rotation angle signal of the steering drive shaft, a second rotation angle signal of the input shaft of the steering gear, a third rotation angle signal of the first front wheel, and a fourth rotation angle signal of the second front wheel; the first rotation angle signal is determined based on the first rotation angle sensor, the second rotation angle signal is determined based on the second rotation angle sensor, the third rotation angle signal is determined based on the third rotation angle sensor, and the fourth rotation angle signal is determined based on the fourth rotation angle sensor;

[0030] According to the first rotation angle signal, determine a second preset angle range, a third preset angle range, and a fourth preset angle range corresponding to the angle represented by the first rotation angle signal;

[0031] Judge whether the angle represented by the second rotation angle signal is between the second preset angle range, whether the angle represented by the third rotation angle signal is between the third preset angle range, and whether the angle represented by the fourth rotation angle signal is between the fourth preset angle range.

[0032] The above monitoring method respectively and real-time detects and obtains a first rotation angle signal, a second rotation angle signal, a third rotation angle signal, and a fourth rotation angle signal through a first rotation angle sensor, a second rotation angle sensor, a third rotation angle sensor, and a fourth rotation angle sensor. Since the first rotation angle signal is the rotation angle input by the steering wheel, a second preset angle range, a third preset angle range, and a fourth preset angle range corresponding to the first rotation angle signal are determined based on the first rotation angle signal. Then, by determining whether the second rotation angle signal, the third rotation angle signal, and the fourth rotation angle signal are respectively between the corresponding second preset angle range, third preset angle range, and fourth preset angle range, it is determined whether there is a problem with the steering transmission mechanism.

[0033] In one embodiment, the steering transmission mechanism further includes a first indicator light electrically connected to the control unit and disposed on the first rotation angle sensor, and a second indicator light electrically connected to the control unit and disposed on the second rotation angle sensor;

[0034] The monitoring method further includes:

[0035] If the angle represented by the second rotation angle signal is not within the second preset angle range, control the first indicator light and the second indicator light to light up.

[0036] In one embodiment, the steering transmission mechanism further includes a third indicator light electrically connected to the control unit and disposed on the third rotation angle sensor;

[0037] The monitoring method further includes:

[0038] If the angle represented by the third rotation angle signal is not within the third preset angle range, control the second indicator light and the third indicator light to light up.

[0039] In one embodiment, the steering transmission mechanism further includes a fourth indicator light electrically connected to the control unit and disposed on the fourth rotation angle sensor;

[0040] The monitoring method further includes:

[0041] If the angle represented by the fourth rotation angle signal is not within the fourth preset angle range, control the third indicator light and the fourth indicator light to light up. Description of the Drawings

[0042] Figure 1 is a schematic structural diagram of a steering transmission mechanism in an embodiment of the present application;

[0043] Figure 2 is a schematic flowchart of a monitoring method for a steering transmission mechanism in an embodiment of the present application;

[0044] Figure 3 Schematic diagram of the curve relationship between the angle represented by the first corner signal and the second preset angle range, the third preset angle range, and the fourth preset angle range in an embodiment of the present application.

[0045] Explanation of the reference numerals in the drawings:

[0046] 10. Steering transmission mechanism; 11. Steering wheel; 12. Steering drive shaft; 13. Input shaft of the steering gear; 14. First corner sensor; 15. Second corner sensor; 16. Third corner sensor; 17. Fourth corner sensor; 18. Control unit; 19. Steering arm; 21. First steering knuckle; 22. Second steering knuckle. Detailed implementation manners

[0047] In order to make the above objects, features, and advantages of the present invention more obvious and understandable, the following describes the detailed implementation manners of the present invention with reference to the accompanying drawings. Many specific details are set forth in the following description to facilitate a thorough understanding of the present invention. However, the present invention can be implemented in many other ways different from those described herein, and those skilled in the art can make similar improvements without departing from the connotation of the present invention. Therefore, the present invention is not limited by the specific embodiments disclosed below.

[0048] In the description of the present invention, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present invention and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present invention.

[0049] In addition, the terms "first" and "second" are only used for descriptive purposes and cannot be understood as indicating or implying relative importance or implicitly indicating the quantity of the indicated technical features. Thus, the features defined with "first" and "second" may explicitly or implicitly include at least one of such features. In the description of the present invention, the meaning of "a plurality" is at least two, such as two, three, etc., unless otherwise specifically defined.

[0050] In the present invention, unless otherwise clearly specified and limited, the terms "installed", "connected", "connected", "fixed" and the like should be understood in a broad sense, for example, it can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium, it can be the internal connection of two elements or the interaction relationship between two elements, unless otherwise clearly defined. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0051] In the present invention, unless otherwise clearly specified and limited, a first feature being "above" or "below" a second feature may mean that the first and second features are in direct contact, or the first and second features are in indirect contact through an intermediate medium. Moreover, a first feature being "above", "above" or "above" a second feature may mean that the first feature is directly above or obliquely above the second feature, or simply means that the first feature is higher in level than the second feature. A first feature being "below", "below" or "below" a second feature may mean that the first feature is directly below or obliquely below the second feature, or simply means that the first feature is lower in level than the second feature.

[0052] It should be noted that when an element is referred to as being "fixed to" or "disposed on" another element, it may be directly on the other element or there may be a central element. When an element is considered to be "connected to" another element, it may be directly connected to the other element or there may be a central element at the same time. The terms "vertical", "horizontal", "upper", "lower", "left", "right" and similar expressions used herein are for illustrative purposes only and are not intended to be the only implementation method.

[0053] Figure 1 Schematic diagram of the structure of the steering transmission mechanism in one embodiment of the present application.

[0054] See also Figure 1 The present application provides a steering transmission mechanism 10 for a vehicle, the steering transmission mechanism 10 includes a steering wheel 11, a steering transmission shaft 12 and a steering gear input shaft 13 which are sequentially connected in transmission, a first front wheel (not shown) and a second front wheel (not shown) driven simultaneously by the steering gear input shaft 13, a first rotation angle sensor 14, a second rotation angle sensor 15, a third rotation angle sensor 16, a fourth rotation angle sensor 17 and a control unit 18.

[0055] In this way, by setting the first corner sensor 14, the second corner sensor 15, the third corner sensor 16 and the fourth corner sensor 17, the rotation angles of the corresponding steering drive shaft 12, the steering gear input shaft 13, the first front wheel and the second front wheel are detected in real time, and the detected rotation angles are transmitted to the control unit 18 in real time, so as to determine whether the rotation angles are within the corresponding preset angle ranges. Thus, when the rotation angles are not within the preset angle ranges, maintenance can be carried out in time to eliminate the safety hazards of the steering transmission mechanism 10 and prevent traffic accidents caused by steering failure during driving.

[0056] The first corner sensor 14 is arranged on the steering drive shaft 12 and is used for detecting the rotation angle of the steering drive shaft 12; the second corner sensor 15 is arranged on the steering gear input shaft 13 and is used for detecting the rotation angle of the steering gear input shaft 13; the third corner sensor 16 is arranged on the first front wheel and is used for detecting the rotation angle of the first front wheel; the fourth corner sensor 17 is arranged on the second front wheel and is used for detecting the rotation angle of the second front wheel. The control unit 18 is electrically connected to the first corner sensor 14, the second corner sensor 15, the third corner sensor 16 and the fourth corner sensor 17 respectively. It can be understood that the control unit 18 can be electrically connected to the first corner sensor 14, the second corner sensor 15, the third corner sensor 16 and the fourth corner sensor 17 respectively by means of wireless connection or wired connection (as shown by a in the connecting data line or wire in the case of wired connection). Figure 1 as shown in a of

[0057] In some embodiments, the steering transmission mechanism 10 further includes a first indicator light (not shown in the figure), a second indicator light (not shown in the figure), a third indicator light (not shown in the figure) and a fourth indicator light (not shown in the figure). The first indicator light is electrically connected to the control unit 18 and is arranged on the first corner sensor 14; the second indicator light is electrically connected to the control unit 18 and is arranged on the second corner sensor 15. The first indicator light and the second indicator light can be used together to indicate that the rotation angle of the steering gear input shaft 13 is not within the second preset angle range; the third indicator light is electrically connected to the control unit 18 and is arranged on the third corner sensor 16. The second indicator light and the third indicator light can be used together to indicate that the rotation angle of the first front wheel is not within the third preset angle range; the fourth indicator light is electrically connected to the control unit 18 and is arranged on the fourth corner sensor 17. The third indicator light and the fourth indicator light can be used together to indicate that the rotation angle of the second front wheel is not within the fourth preset angle range.

[0058] It should be noted that the first corner sensor 14 detects the rotation angle of the steering drive shaft 12, and the steering drive shaft 12 is connected to the steering wheel 11. That is to say, the cumulative transmission error of the rotation angle of the steering drive shaft 12 is small. Therefore, generally speaking, the rotation angle of the steering drive shaft 12 detected by the first corner sensor 14 will not have problems. Therefore, in the subsequent embodiments of the present application, including in the monitoring method, the rotation angle of the steering drive shaft 12 is used as the reference. In addition, since the steering transmission mechanism 10 includes a large number of transmission structures, the input angle from the steering wheel 11 cannot always be output from the wheels unchanged. There are connection errors, structural errors, etc. between the transmission structures, resulting in changes in the rotation angles of the transmission structures. Therefore, it is very necessary to detect the rotation angles of the transmission structures in real time. In the present application, the detected transmission structures are the steering drive shaft 12, the steering gear input shaft 13, the first front wheel, and the second front wheel.

[0059] The steering transmission mechanism 10 further includes a steering tie rod (not shown in the figure). One end of the steering tie rod is drivingly connected to the steering gear input shaft 13, and the other end is drivingly connected to the first front wheel.

[0060] The steering transmission mechanism 10 further includes a steering arm 19. One end of the steering arm 19 is drivingly connected to the end of the steering tie rod away from the steering gear input shaft 13, and the other end is drivingly connected to the first front wheel.

[0061] The steering transmission mechanism 10 further includes a first front axle kingpin (not shown in the figure), a first steering knuckle 21, and a front axle (not shown in the figure). The first front axle kingpin is used to connect the first steering knuckle 21 and one end of the front axle close to the first front wheel; one end of the first steering knuckle 21 is drivingly connected to the steering arm 19, and the other end is drivingly connected to the front axle; one end of the first front wheel is connected to the front axle, and the other end of the second front wheel is connected to the other end of the front axle away from the first front wheel.

[0062] The steering transmission mechanism 10 further includes a second front axle kingpin (not shown in the figure) and a second steering knuckle 22. The second front axle kingpin is used to connect the second steering knuckle 22 and one end of the front axle close to the second front wheel; the second steering knuckle 22 is drivingly connected to the front axle.

[0063] Figure 2 It is a schematic flow chart of the monitoring method of the steering transmission mechanism in an embodiment of the present application.

[0064] Refer to Figure 2 The present application also provides a monitoring method for monitoring the steering transmission mechanism 10, including the steering transmission mechanism 10 in any of the above embodiments. The monitoring method includes the following steps:

[0065] S110. Detect and obtain the first corner signal of the steering drive shaft 12, the second corner signal of the steering gear input shaft 13, the third corner signal of the first front wheel, and the fourth corner signal of the second front wheel in real time;

[0066] Among them, the first corner signal is determined based on the first corner sensor 14, the second corner signal is determined based on the second corner sensor 15, the third corner signal is determined based on the third corner sensor 16, and the fourth corner signal is determined based on the fourth corner sensor 17;

[0067] S120. Determine a second preset angle range, a third preset angle range, and a fourth preset angle range corresponding to the angle represented by the first corner signal according to the first corner signal;

[0068] S130. Judge whether the angle represented by the second corner signal is between the second preset angle ranges, whether the angle represented by the third corner signal is between the third preset angle ranges, and whether the angle represented by the fourth corner signal is between the fourth preset angle ranges.

[0069] In the above monitoring method of the present application, the first corner sensor 14, the second corner sensor 15, the third corner sensor 16, and the fourth corner sensor 17 are respectively used to detect and obtain the first corner signal, the second corner signal, the third corner signal, and the fourth corner signal in real time. Since the first corner signal is the rotation angle input by the steering wheel 11, the second preset angle range, the third preset angle range, and the fourth preset angle range corresponding to the first corner signal are determined based on the first corner signal. Then, by judging whether the second corner signal, the third corner signal, and the fourth corner signal are respectively between the corresponding second preset angle range, third preset angle range, and fourth preset angle range, it is judged whether there is a problem with the steering transmission mechanism 10.

[0070] In step S110, the first corner sensor 14 detects the rotation angle of the steering drive shaft 12 in real time and obtains the first corner signal, the second corner sensor 15 detects the rotation angle of the steering gear input shaft 13 in real time and obtains the second corner signal, the third corner sensor 16 detects the rotation angle of the first front wheel in real time and obtains the third corner signal, and the fourth corner sensor 17 detects the rotation of the second front wheel in real time and obtains the fourth corner signal. Moreover, the first corner signal detected and obtained by the first corner sensor 14 in real time can be transmitted to the control unit 18 by the first corner sensor 14 in real time; the second corner signal detected and obtained by the second corner sensor 15 in real time can be transmitted to the control unit 18 by the second corner sensor 15 in real time; the third corner signal detected and obtained by the third corner sensor 16 in real time can be transmitted to the control unit 18 by the third corner sensor 16 in real time; the fourth corner signal detected and obtained by the fourth corner sensor 17 in real time can be transmitted to the control unit 18 by the fourth corner sensor 17 in real time.

[0071] Figure 3Schematic diagram of the curve relationship between the angle represented by the first corner signal, the second preset angle range, the third preset angle range, and the fourth preset angle range in an embodiment of the present application.

[0072] Refer to Figure 3 , Figure 3 In the figure, curve A is the curve corresponding to the angle represented by the first corner signal, curve B is the curve corresponding to the second preset angle range, curve C is the curve corresponding to the third preset angle range, and curve D is the curve corresponding to the fourth preset angle range. Among them, curve A is a straight line, while curves B, C, and D are all ranges composed of two straight lines. For example, draw an arbitrary straight line parallel to the vertical coordinate axis (angle). The intersection point of this straight line and curve A is the angle represented by the first corner signal at this time. Correspondingly, this straight line has two intersection points with curves B, C, and D respectively. The two intersection points with curve B are the maximum and minimum values of the second preset angle range, the two intersection points with curve C are the maximum and minimum values of the third preset angle range, and the two intersection points with curve D are the maximum and minimum values of the fourth preset angle range.

[0073] In step S120, since the first component driven by the steering wheel 11 is the steering drive shaft 12, the cumulative transmission error of the rotation angle of the steering drive shaft 12 is relatively small. Therefore, based on the first corner signal of the steering drive shaft 12 obtained by the first corner sensor 14, the second preset angle range, the third preset angle range, and the fourth preset angle range corresponding to the angle represented by the first corner signal are determined. In addition, the angle represented by the first corner signal is different at different times, that is, the angle represented by the first corner signal is variable. Each first corner signal corresponds to a represented angle, and thus corresponds to a determined second preset angle range, a determined third preset angle range, and a determined fourth preset angle range. Figure 3 The shown curve relationship diagram is obtained based on a large number of experiments. The second preset angle range refers to the range of the rotation angle of the steering gear input shaft 13 determined according to the angle represented by a certain first corner signal. The third preset angle range refers to the range of the rotation angle of the first front wheel determined according to the angle represented by a certain first corner signal. The fourth preset angle range refers to the range of the rotation angle of the second front wheel determined according to the angle represented by a certain first corner signal.

[0074] It should be noted that theoretically, the first preset angle range, the third preset angle range, and the fourth preset angle range corresponding to the angle represented by the second corner signal can also be determined based on the second corner signal; similarly, the first preset angle range, the second preset angle range, and the fourth preset angle orientation corresponding to the angle represented by the third corner signal can also be determined based on the third corner signal; the first preset angle range, the second preset angle range, and the third preset angle range corresponding to the angle represented by the fourth corner signal can also be determined based on the fourth corner signal. However, since the rotation angle of the steering transmission shaft 12 is determined by the input angle of the steering wheel 11, in actual operation, it is more appropriate to use the first corner signal as the reference.

[0075] The monitoring method further includes: if the angle represented by the second corner signal is not within the second preset angle range, controlling the first indicator light and the second indicator light to light up. Specifically, when the angle represented by the second corner signal is not within the second preset angle range, that is, the rotation angle of the steering gear input shaft 13 is not within the second preset angle range, it indicates that there is a problem with the steering gear input shaft 13, the steering transmission shaft 12, and the transmission structure between the steering gear input shaft 13 and the steering transmission shaft 12, and inspection and repair are required. Of course, it may also be a problem with other structures rather than the transmission structure between the steering gear input shaft 13 and the steering transmission shaft 12, but usually it is the transmission structure that has a problem. Among them, when the angle represented by the second corner signal is the critical value (maximum or minimum value) of the second preset angle range, the first indicator light and the second indicator light are not lit.

[0076] The monitoring method further includes: if the angle represented by the third corner signal is not within the third preset angle range, controlling the second indicator light and the third indicator light to light up. Specifically, when the angle represented by the third corner signal is not within the third preset angle range, that is, the rotation angle of the first front wheel is not within the third preset angle range, it indicates that there is a problem with the steering gear input shaft 13, the first front wheel, and the transmission structure between the steering gear input shaft 13 and the first front wheel, and inspection and repair are required. It may also be a problem with other structures rather than the transmission structure between the steering gear input shaft 13 and the first front wheel, but usually it is the transmission structure that has a problem. Among them, when the angle represented by the third corner signal is the critical value (maximum or minimum value) of the third preset angle range, the second indicator light and the third indicator light are not lit.

[0077] The monitoring method further includes: if the angle represented by the fourth corner signal is not within the fourth preset angle range, controlling the third indicator light and the fourth indicator light to light up. Specifically, when the angle represented by the fourth corner signal is not within the fourth preset angle range, that is, the rotation angle of the second front wheel is not within the fourth preset angle range, it indicates that there is a problem with the first front wheel, the second front wheel, and the transmission structure located between the first front wheel and the second front wheel, and inspection and repair are required. It may also be that there is a problem with other structures rather than the transmission structure located between the first front wheel and the second front wheel, but usually it is the transmission structure that has a problem. Among them, when the angle represented by the fourth corner signal is the critical value (maximum value or minimum value) of the fourth preset angle range, the third indicator light and the fourth indicator light are not lit.

[0078] The technical features of the above-described embodiments can be combined arbitrarily. For the sake of brevity of description, not all possible combinations of the technical features in the above-described embodiments are described. However, as long as there is no contradiction in the combination of these technical features, it should be considered as the scope described in this specification.

[0079] The above-described embodiments merely represent several implementation manners of the present invention, and the description thereof is relatively specific and detailed, but it should not be construed as a limitation on the scope of the invention patent. It should be noted that for those of ordinary skill in the art, without departing from the concept of the present invention, several modifications and improvements can still be made, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the present invention patent shall be subject to the appended claims.

Claims

1. A steering transmission mechanism for a vehicle, characterized in that, The steering transmission mechanism includes: A steering wheel, a steering transmission shaft, and a steering gear input shaft that are sequentially drivingly connected; A first front wheel and a second front wheel that are simultaneously driven by the steering gear input shaft; A first angle sensor disposed on the steering transmission shaft for detecting the rotation angle of the steering transmission shaft; A second angle sensor disposed on the steering gear input shaft for detecting the rotation angle of the steering gear input shaft; A third angle sensor disposed on the first front wheel for detecting the rotation angle of the first front wheel; A fourth angle sensor disposed on the second front wheel for detecting the rotation angle of the second front wheel; and A control unit electrically connected to the first angle sensor, the second angle sensor, the third angle sensor, and the fourth angle sensor respectively; A first indicator light, the first indicator light being electrically connected to the control unit and disposed on the first angle sensor; A second indicator light, the second indicator light being electrically connected to the control unit and disposed on the second angle sensor, the first indicator light and the second indicator light can be used together to indicate that the rotation angle of the steering gear input shaft is not within the second preset angle range; A third indicator light, the third indicator light being electrically connected to the control unit and disposed on the third angle sensor; the second indicator light and the third indicator light can be used together to indicate that the rotation angle of the first front wheel is not within the third preset angle range; A fourth indicator light, the fourth indicator light being electrically connected to the control unit and disposed on the fourth angle sensor; the third indicator light and the fourth indicator light can be used together to indicate that the rotation angle of the second front wheel is not within the fourth preset angle range, wherein the second preset angle range, the third preset angle range, and the fourth preset angle range are determined according to the first angle signal of the steering transmission shaft.

2. The steering transmission mechanism according to claim 1, wherein The steering transmission mechanism further includes a steering tie rod, one end of the steering tie rod is drivingly connected to the steering gear input shaft, and the other end is drivingly connected to the first front wheel.

3. The steering transmission mechanism according to claim 2, characterized in that, The steering transmission mechanism further includes a steering arm, one end of the steering arm is drivingly connected to the end of the steering tie rod away from the steering gear input shaft, and the other end is drivingly connected to the first front wheel.

4. The steering transmission mechanism according to claim 3, wherein The steering transmission mechanism further includes a first front axle kingpin, a first steering knuckle, and a front axle; The first front axle kingpin is used to connect the first steering knuckle and one end of the front axle close to the first front wheel; One end of the first steering knuckle is drivingly connected to the steering arm, and the other end is drivingly connected to the front axle; One end of the first front wheel is connected to the front axle, and the other end of the second front wheel is connected to the front axle away from the first front wheel.

5. The steering transmission mechanism according to claim 4, characterized in that, The steering transmission mechanism further includes a second front axle kingpin and a second steering knuckle; The second front axle kingpin is used to connect the second steering knuckle and one end of the front axle close to the second front wheel; The second steering knuckle is drivingly connected to the front axle.

6. A monitoring method for monitoring a steering transmission mechanism, characterized in that, Including the steering transmission mechanism according to any one of claims 1-5, the monitoring method includes the following steps: Detect and obtain the first rotation angle signal of the steering drive shaft, the second rotation angle signal of the steering gear input shaft, the third rotation angle signal of the first front wheel, and the fourth rotation angle signal of the second front wheel in real time; the first rotation angle signal is determined based on the first rotation angle sensor, the second rotation angle signal is determined based on the second rotation angle sensor, the third rotation angle signal is determined based on the third rotation angle sensor, and the fourth rotation angle signal is determined based on the fourth rotation angle sensor; According to the first rotation angle signal, determine the second preset angle range, the third preset angle range, and the fourth preset angle range corresponding to the angle represented by the first rotation angle signal; Judge whether the angle represented by the second rotation angle signal is between the second preset angle ranges, whether the angle represented by the third rotation angle signal is between the third preset angle ranges, and whether the angle represented by the fourth rotation angle signal is between the fourth preset angle ranges.

7. The monitoring method according to claim 6, wherein The steering transmission mechanism further includes a first indicator light electrically connected to the control unit and disposed on the first rotation angle sensor, and a second indicator light electrically connected to the control unit and disposed on the second rotation angle sensor; The monitoring method further includes: If the angle represented by the second rotation angle signal is not between the second preset angle ranges, control the first indicator light and the second indicator light to light up.

8. The monitoring method according to claim 7, characterized in that The steering transmission mechanism further includes a third indicator light electrically connected to the control unit and disposed on the third rotation angle sensor; The monitoring method further includes: If the angle represented by the third rotation angle signal is not between the third preset angle ranges, control the second indicator light and the third indicator light to light up.

9. The monitoring method according to claim 8, characterized in that, The steering transmission mechanism further includes a fourth indicator light electrically connected to the control unit and disposed on the fourth rotation angle sensor; The monitoring method further includes: If the angle represented by the fourth rotation angle signal is not between the fourth preset angle ranges, control the third indicator light and the fourth indicator light to light up.

Images