Steering control system of guide bus and guide bus with steering control system

Abstract

The invention discloses a steering control system of a guide bus and the guide bus with the steering control system, and the steering control system of the guide bus comprises a guide arm which can be arranged on an axle of the guide bus in a left-right swinging manner; the wheels are rotatably arranged on the guide arms and swing along with the guide arms; the steering driving device is in transmission connection with the guide arm; the swing arm is arranged on the guide arm and can swing left and right between a first position and a second position; the detection wheel is rotatably arranged on the swing arm, and the detection wheel is suitable for being matched with a roadside guide rail and suitable for driving the swing arm to swing under the guidance of the roadside guide rail; and the steering detection device is used for detecting the position of the swing arm and is electrically connected with the steering driving device. The steering control system of the guide bus has the advantages of avoiding tire abrasion, being high in reliability and the like.

Description

Technical Field

[0001] The present invention relates to the technical field of vehicle engineering, and in particular to a steering control system of a guide bus and a guide bus having the steering control system of the guide bus. Background Art

[0002] Kerb-guided bus (KGB) is a bus system that is guided by external media other than the driver's control. It has a long history of application in Australia, the United Kingdom, Germany and other places.

[0003] The steering control system of the guided bus in the related art guides the rubber wheels on the guided bus by the roadside guide rails, and the rubber wheels drive the wheels to swing left and right, thereby controlling the steering of the wheels. However, in the actual steering process, it is inevitable that the running trajectory of the wheels will be inconsistent with the limited trajectory of the roadside guide rails, which not only easily leads to abnormal wear of the wheel tires, but also easily affects the reliability of the vehicle's driving when the guided bus runs at high speed. Summary of the invention

[0004] The present invention aims to solve at least one of the technical problems existing in the prior art. To this end, the present invention provides a steering control system for a guided bus, which has the advantages of avoiding tire wear and high reliability.

[0005] The present invention also provides a guided bus having the steering control system of the guided bus.

[0006] To achieve the above-mentioned purpose, according to an embodiment of the first aspect of the present invention, a steering control system for a guide bus is provided, wherein the steering control system for the guide bus comprises: a guide arm, wherein the guide arm is arranged on the axle of the guide bus so as to be swingable left and right through a pin shaft; a wheel, wherein the wheel is rotatably arranged on the guide arm and swings together with the guide arm; a steering drive device, wherein the steering drive device is transmission-connected to the guide arm; a swing arm, wherein the swing arm is arranged on the guide arm so as to be swingable left and right between a first position and a second position; a detection wheel, wherein the detection wheel is rotatably arranged on the swing arm, wherein the detection wheel is suitable for cooperating with a roadside guide rail and suitable for driving the swing arm to swing under the guidance of the roadside guide rail; and a steering detection device, wherein the steering detection device is used to detect the position of the swing arm and is electrically connected to the steering drive device.

[0007] The steering control system of the guided bus according to the embodiment of the present invention has the advantages of avoiding tire wear and high reliability.

[0008] In addition, the steering control system of the guided bus according to the above embodiment of the present invention may also have the following additional technical features:

[0009] According to one embodiment of the present invention, the swing arm is in contact with the guide arm at the first position and is suitable for driving the guide arm to swing under the guidance of the roadside guide rail.

[0010] According to an embodiment of the present invention, a limiting step is provided on the swing arm, and when the swing arm is in the first position, the limiting step abuts against the guide arm.

[0011] According to one embodiment of the present invention, the steering control system of the guided bus further comprises an elastic member driving the swing arm toward the second position.

[0012] According to one embodiment of the present invention, the front end of the swing arm is connected to the front end of the guide arm, the wheel is connected to the rear end of the guide arm, and the rear end of the guide arm is swingably connected to the axle of the guide bus.

[0013] According to one embodiment of the present invention, the guide arm includes an arm body and a limit plate, the limit plate is connected to the front end of the arm body, the front end of the swing arm is swingably connected to the front end of the limit plate, the swing arm is in contact with the limit plate when located at the first position, and the steering detection device is mounted on the limit plate.

[0014] According to an embodiment of the present invention, the steering drive device at least comprises a pull rod, and the pull rod is rotatably connected to the middle portion of the guide arm.

[0015] According to one embodiment of the present invention, the steering control system of the guided bus further includes a failure detection device, which is used to detect whether the steering detection device has failed and control the guided bus to reduce the driving speed when the failure of the steering detection device is detected.

[0016] According to one embodiment of the present invention, the steering control system of the guided bus further comprises a vehicle speed detection device, which is used to detect the travel speed of the guided bus and is electrically connected to the steering drive device and the steering detection device, respectively.

[0017] According to an embodiment of a second aspect of the present invention, a guided bus is provided. The guided bus comprises the steering control system of the guided bus according to the embodiment of the first aspect of the present invention.

[0018] The guided bus according to the embodiment of the present invention has the advantages of avoiding tire wear and high reliability by utilizing the steering control system of the guided bus according to the embodiment of the first aspect of the present invention.

[0019] Additional aspects and advantages of the present invention will be given in part in the following description and in part will be obvious from the following description, or will be learned through practice of the present invention. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] The above and / or additional aspects and advantages of the present invention will become apparent and easily understood from the description of the embodiments in conjunction with the following drawings, in which:

[0021] Figure 1 Schematic diagram of the structure of a steering control system for a guided bus according to an embodiment of the present invention.

[0022] Figure numerals: steering control system 1 of guide bus, guide arm 10, arm body 11, limit plate 12, pin shaft 13, wheel 20, pull rod 31, swing arm 40, limit step 41, detection wheel 50, steering detection device 60, elastic member 70, roadside guide rail 2, axle 3. DETAILED DESCRIPTION

[0023] Embodiments of the present invention are described in detail below, examples of which are shown in the accompanying drawings, wherein the same or similar reference numerals throughout represent the same or similar elements or elements having the same or similar functions. The embodiments described below with reference to the accompanying drawings are exemplary and are only used to explain the present invention, and cannot be understood as limiting the present invention.

[0024] In the description of the present invention, it should be understood that the terms "center", "longitudinal", "lateral", "length", "width", "thickness", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inside", "outside", "clockwise", "counterclockwise", "axial", "radial", "circumferential" and the like indicate positions or positional relationships based on the positions or positional relationships shown in the accompanying drawings, and are 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 therefore cannot be understood as a limitation on the present invention. In addition, features defined as "first" and "second" may explicitly or implicitly include one or more of the features. In the description of the present invention, unless otherwise specified, "multiple" means two or more.

[0025] In the description of the present invention, it should be noted that, unless otherwise clearly specified and limited, the terms "installed", "connected", and "connected" 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 it can be indirectly connected through an intermediate medium, or it can be the internal communication of two components. For ordinary technicians in this field, the specific meanings of the above terms in the present invention can be understood according to specific circumstances.

[0026] The following describes a steering control system 1 for a guided bus according to an embodiment of the present invention with reference to the accompanying drawings.

[0027] like Figure 1 As shown, the steering control system 1 of the guided bus according to the embodiment of the present invention includes a guide arm 10 , a wheel 20 , a steering drive device, a swing arm 40 , a detection wheel 50 and a steering detection device 60 .

[0028] The guide arm 10 is rotatably mounted on the axle 3 of the guide bus (the front-to-back and left-to-right directions are shown by arrows in the figure and are only for ease of description, not for limitation of the actual setting direction). The wheel 20 is rotatably mounted on the guide arm 10 and swings along with the guide arm 10. The steering drive device is transmission-connected to the guide arm 10. The swing arm 40 is rotatably mounted on the guide arm 10 between a first position and a second position. The detection wheel 50 is rotatably mounted on the swing arm 40, and the detection wheel 50 is suitable for cooperating with the roadside guide rail 2 and for driving the swing arm 40 to swing under the guidance of the roadside guide rail 2. The steering detection device 60 is used to detect the position of the swing arm 40 and is electrically connected to the steering drive device.

[0029] Specifically, the wheel 20 includes a wheel hub and a tire. Different from the purely rigid running wheels of rail vehicles such as trains, the tire portion thereof is more susceptible to abnormal wear against the roadside guide rail 2 .

[0030] The guide arm 10 is connected to the axle 3 of the guide bus via a pin shaft 13 so as to be swingable left and right.

[0031] There can be at least two steering control systems 1 of the guided bus, which are respectively located at the left and right parts of the guided bus.

[0032] Reference below Figure 1 The working process of the steering control system 1 of the guided bus according to the embodiment of the present invention is described.

[0033] When the guide bus travels in a straight line, the swing arm 40 is located at the second position.

[0034] When the roadside guide rail 2 turns right, the roadside guide rail 2 on the left side of the guide bus squeezes and guides the detection wheel 50 on the left side, and the detection wheel 50 drives the swing arm 40 to move to the first position. The steering detection device 60 detects that the position of the left swing arm 40 changes, and determines that the roadside guide rail 2 turns right, and then controls the steering drive device to drive the wheel 20 to swing right, so that the guide bus actively turns right.

[0035] When the roadside guide rail 2 turns left, the roadside guide rail 2 on the left side of the guide bus squeezes and guides the detection wheel 50 on the right side, and the detection wheel 50 drives the swing arm 40 to move to the first position. The steering detection device 60 detects that the position of the right swing arm 40 changes, and determines that the roadside guide rail 2 turns left, and then controls the steering drive device to drive the wheel 20 to swing left, so that the guide bus actively turns left.

[0036] Specifically, the steering detection device 60 and the steering drive device can also be connected through a controller. The controller can calculate the angle at which the steering drive device drives the wheel 20 to swing based on the detection value of the steering detection device 60. For example, the angle at which the steering detection device 60 controls the steering drive device to drive the wheel 20 to swing can be positively correlated with the angle at which the swing arm 40 swings relative to the second position.

[0037] According to the steering control system 1 of the guided bus according to the embodiment of the present invention, by providing a swing arm 40, a detection wheel 50 and a steering detection device 60, the swing arm 40 is driven to swing by the guidance of the detection wheel 50 by the roadside guide rail 2, and the position of the swing arm 40 is determined by the steering detection device 60. When the steering detection device 60 detects that the swing arm 40 swings from the second position to the first position, it indicates that the detection wheel 50 is squeezed and guided by the turning roadside guide rail 2, so that it can be determined whether the roadside guide rail 2 starts to turn, and after the steering detection device 60 detects that the roadside guide rail 2 starts to turn, the steering drive device is actively controlled to drive the wheel 20 to turn. Compared with the related art in which the steering is achieved by only relying on the cooperation and guidance of the guide wheel and the roadside guide rail, the steering of the guided bus can be made smoother and more natural, and the running trajectory of the wheel of the guided bus is made more consistent with the trajectory defined by the roadside guide rail 2, so as to avoid abnormal wear of the wheel 20 and the roadside guide rail 2, and to avoid the reliability problem caused by the friction between the wheel 20 and the roadside guide rail 2 during high-speed operation, thereby improving the reliability of the operation of the guided bus.

[0038] In addition, by adopting the steering control system 1 of the guide bus, the calibration of the guide bus can be made simpler. For example, after the guide bus runs a certain distance along the straight roadside guide rail 2, the collected left and right side distance data can be analyzed and calculated to obtain the installation error of the left and right detection wheels 50, and the error can be weighted and corrected in the controller to complete the calibration.

[0039] Therefore, the steering control system 1 for the guided bus according to the embodiment of the present invention has the advantages of avoiding tire wear and high reliability.

[0040] The following describes a steering control system 1 for a guided bus according to a specific embodiment of the present invention with reference to the accompanying drawings.

[0041] In some specific embodiments of the present invention, Figure 1 As shown, the steering control system 1 of the guided bus according to the embodiment of the present invention includes a guide arm 10 , a wheel 20 , a steering drive device, a swing arm 40 , a detection wheel 50 and a steering detection device 60 .

[0042] Advantageously, if Figure 1As shown, the swing arm 40 fits with the guide arm 10 in the first position and is suitable for driving the guide arm 10 to swing under the guidance of the roadside guide rail 2. Specifically, when the swing arm 40 is already in the first position, the further squeezing and guiding of the detection wheel 50 by the roadside guide rail 2 will drive the swing arm 40 and the guide arm 10 to swing as a whole. In this way, when the steering detection device 60 fails or fails to drive the wheel 20 to steer in time, the guide arm 10 can be used to achieve mechanical steering drive of the wheel 20, and the mechanical drive of the guide arm 10 can be used to achieve backup emergency drive, thereby avoiding complete failure of the steering control and further improving the reliability of the steering control system 1 of the guide bus.

[0043] More advantageously, if Figure 1 As shown, the swing arm 40 has a limiting step 41, and when the swing arm 40 is in the first position, the limiting step 41 abuts against the guide arm 10. In this way, the limiting step 41 can be used to contact the guide arm 10 to prevent the detection wheel 50 from directly contacting the guide arm 10 and causing the detection wheel 50 to get stuck.

[0044] Specifically, if Figure 1 As shown, the steering control system 1 of the guide bus further includes an elastic member 70 for driving the swing arm 40 to the second position. Specifically, the elastic member 70 may be a compression spring and clamped between the swing arm 40 and the guide arm 10. In this way, not only can the elastic member 70 be used to drive the swing arm 40 to reset to the second position, but also the slight shaking of the guide bus may cause the swing arm 40 to swing to the first position, thereby preventing the steering detection device 60 from misjudging the steering timing, thereby further improving the reliability and accuracy of the steering control of the steering control system 1 of the guide bus.

[0045] Alternatively, if Figure 1 As shown, the front end of the swing arm 40 is connected to the front end of the guide arm 10, the wheel 20 is connected to the rear end of the guide arm 10, and the rear end of the guide arm 10 is swingably connected to the axle 3 of the guide bus. Specifically, when the swing arm 40 is in the first position, the detection wheel 50 protrudes outward from the outer end surface of the wheel 20, and the detection wheel 50 is located in front of the wheel 20. This makes it easy for the swing arm 40 and the guide arm 10 to swing left and right, and it is easy to drive the steering of the wheel 20.

[0046] More specifically, Figure 1 As shown, the steering drive device at least includes a pull rod 31, and the pull rod 31 is rotatably connected to the middle part of the guide arm 10. Specifically, the pull rod 31 can be hydraulically driven. In this way, the extension and contraction of the pull rod 31 can be used to drive the guide arm 10 to swing, thereby driving the wheel 20 to swing.

[0047] In some embodiments, the steering control system 1 of the guide bus further includes a failure detection device, which is used to detect whether the steering detection device 60 fails and control the guide bus to reduce the driving speed when the steering detection device 60 fails. In this way, the vehicle speed can be reduced when the steering detection device 60 fails, avoiding excessive speed and increasing the friction between the wheel 20 and the roadside guide rail 2, reducing abnormal wear of the wheel 20 and further improving the reliability of the guide bus.

[0048] In some embodiments, the steering control system 1 of the guide bus further includes a vehicle speed detection device, which is used to detect the travel speed of the guide bus and is electrically connected to the steering drive device and the steering detection device 60. In this way, the steering timing and degree of the wheels 20 can be controlled according to the vehicle speed, or the operation timing of the steering detection device 60 can be determined according to the vehicle speed. For example, the operation of the steering detection device 60 can be stopped when the vehicle speed is low.

[0049] The steering control system 1 of the guided bus can also control the steering degree of the wheels 20 at the bends near the entrance and exit of the station to make the guided bus close to the roadside guide rail 2, making it easier for passengers to get on and off the bus.

[0050] Optionally, the steering detection device is a linear displacement sensor. Specifically, the steering detection device 60 has a retractable detection rod, which is arranged on the guide arm 10 and connected to the swing arm 40. In this way, the swing of the swing arm 40 can be converted into a linear displacement for detection, which is convenient for judging the swing timing and degree of the swing arm 40.

[0051] Specifically, the guide arm 10 includes an arm body 11 and a limit plate 12, the limit plate 12 is connected to the front end of the arm body 11, the front end of the swing arm 40 is swingably connected to the front end of the limit plate 12, and the swing arm 40 abuts against the limit plate 12 when it is in the first position, specifically, the limit step 41 abuts against the limit plate 12 when the swing arm 40 is in the first position. The elastic member 70 and the steering detection device 60 are both mounted on the limit plate 12.

[0052] The following describes a guided bus according to an embodiment of the present invention. The guided bus according to the embodiment of the present invention comprises a steering control system 1 of the guided bus according to the above-mentioned embodiment of the present invention.

[0053] The guided bus according to the embodiment of the present invention has the advantages of avoiding tire wear and high reliability by utilizing the steering control system 1 of the guided bus according to the above embodiment of the present invention.

[0054] Other structures and operations of the guide bus according to the embodiment of the present invention are known to those skilled in the art and will not be described in detail here.

[0055] In the description of this specification, the description with reference to the terms "one embodiment", "some embodiments", "illustrative embodiments", "examples", "specific examples", or "some examples" means that the specific features, structures, materials or characteristics described in conjunction with the embodiment or example are included in at least one embodiment or example of the present invention. In this specification, the schematic representation of the above terms does not necessarily refer to the same embodiment or example. Moreover, the specific features, structures, materials or characteristics described may be combined in any one or more embodiments or examples in a suitable manner.

[0056] Although the embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that various changes, modifications, substitutions and variations may be made to the embodiments without departing from the principles and spirit of the present invention, and that the scope of the present invention is defined by the claims and their equivalents.

Claims

1. A steering control system for a guided bus, characterized in that: include: A guide arm, the guide arm is arranged on the axle of the guide bus so as to be swingable left and right through a pin; A wheel, the wheel being rotatably disposed on the guide arm and swinging along with the guide arm; A steering drive device, the steering drive device is drivingly connected to the guide arm; A swing arm, the swing arm being arranged on the guide arm so as to be able to swing left and right between a first position and a second position; A detection wheel, the detection wheel is rotatably arranged on the swing arm, the detection wheel is suitable for cooperating with the roadside guide rail and is suitable for driving the swing arm to swing under the guidance of the roadside guide rail; A steering detection device is used to detect the position of the swing arm and is electrically connected to the steering drive device.

2. The steering control system for a guided bus according to claim 1, characterized in that: The swing arm is in contact with the guide arm at the first position and is suitable for driving the guide arm to swing under the guidance of the roadside guide rail.

3. The steering control system for a guided bus according to claim 2, characterized in that: The swing arm is provided with a limiting step, and when the swing arm is in the first position, the limiting step abuts against the guide arm.

4. The steering control system for a guided bus according to claim 1, characterized in that: Also included is an elastic member that drives the swing arm toward the second position.

5. The steering control system for a guided bus according to claim 1, characterized in that: The front end of the swing arm is connected to the front end of the guide arm, the wheel is connected to the rear end of the guide arm, and the rear end of the guide arm is swingably connected to the axle of the guide bus.

6. The steering control system for a guided bus according to claim 1, characterized in that: The guide arm includes an arm body and a limit plate, the limit plate is connected to the front end of the arm body, the front end of the swing arm is swingably connected to the front end of the limit plate, the swing arm abuts against the limit plate when located at the first position, and the steering detection device is mounted on the limit plate.

7. The steering control system for a guided bus according to claim 1, characterized in that: The steering drive device at least comprises a pull rod, and the pull rod is rotatably connected to the middle part of the guide arm.

8. The steering control system for a guided bus according to claim 1, characterized in that: It also includes a failure detection device, which is used to detect whether the steering detection device fails and control the guide bus to reduce the running speed when the steering detection device fails.

9. The steering control system for a guided bus according to claim 1, characterized in that: It also includes a vehicle speed detection device, which is used to detect the running speed of the guide bus and is electrically connected to the steering drive device and the steering detection device respectively.

10. A guided bus, characterized in that: Comprising a steering control system according to any one of claims 1-9.

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