Simulation test platform

Abstract

The utility model relates to a simulation test platform, which comprises a rack, a rotating device, two brake testing devices, a rotating speed sensor and a main controller, and is characterized in that the rack comprises a bottom plate and a frame, and the frame is arranged on the bottom plate; the rotating device comprises a driving motor, a rotating shaft and a rotating flange, the rotating shaft is provided with a first end and a second end, the first end is connected with the output end of the driving motor, the rotating shaft is rotatably arranged on the frame, and the rotating flange is arranged on the rotating shaft and located in the frame; the two brake testing devices are arranged in the frame and are in axial symmetry about the first defined central axis; the rotating speed sensor is arranged on the rotating shaft; the main controller is arranged on the bottom plate or the frame, and the driving motor and the rotating speed sensor are both electrically connected with the main controller. Through the cooperation of the rotating device and the brake testing device, one or two brake testing devices are enabled to carry out brake testing, and the brake working condition of single-side brake or double-side brake can be tested.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicles, in particular to a simulation test platform. Background Art

[0002] In recent years, the intelligent technology of automobiles has developed rapidly, and driverless driving has become a trend in the automobile industry. In order to achieve the goal of driverless driving, some wire control technologies have emerged, such as wire control steering and wire control braking. The wire control braking system is an important part of the wire control chassis, and it is also the research focus and difficulty of the current automobile wire control technology. The wire control braking system can effectively meet the needs of intelligent automobile driving assistance systems and greatly improve the stability and safety of vehicle driving.

[0003] When developing and designing a brake-by-wire system, it is necessary to verify different types of braking conditions and optimize and debug the braking strategy under specific conditions, so as to improve the driving comfort of the vehicle while meeting the braking requirements. Therefore, a corresponding simulation test platform is needed to simulate the braking conditions. Utility Model Content

[0004] Based on the above description, the utility model provides a simulation test platform, aiming to solve the problem that there is no corresponding simulation test platform to simulate different types of braking conditions and braking strategies under specific conditions.

[0005] The technical solution of the utility model to solve the above technical problems is as follows:

[0006] A simulation test platform, comprising:

[0007] The stand comprises a bottom plate and a frame, wherein the frame is arranged on the bottom plate;

[0008] A rotating device, comprising a driving motor, a rotating shaft and a rotating flange, wherein the rotating shaft has a first end and a second end, the first end is connected to the output end of the driving motor, the rotating shaft is rotatably arranged on the frame, the rotating flange is arranged on the rotating shaft, and the rotating flange is located in the frame;

[0009] Two brake test devices are arranged in the frame, and the two brake test devices are symmetrical about a first defined central axis;

[0010] A rotation speed sensor is arranged on the rotating shaft;

[0011] A main controller is arranged on the base plate or the frame, and the driving motor and the rotation speed sensor are both electrically connected to the main controller.

[0012] On the basis of the above technical solution, the present invention can also be improved as follows.

[0013] Furthermore, the rotating shaft is connected to the frame via at least one thrust bearing.

[0014] Furthermore, the stand includes a first support disposed on the base plate, the first support is disposed at the second end, and the rotating shaft is rotatably connected to the first support.

[0015] Furthermore, the stand includes a second support disposed on the bottom plate, the second support is arranged opposite to the second end, and a sphere is provided between the second support and the second end.

[0016] Furthermore, the braking test device includes a housing, two braking mechanisms, a sub-controller and an energy source component, the housing has an opening for rotating a rotating flange, the two braking mechanisms and the sub-controller are both arranged in the housing, the two braking mechanisms are axially symmetrical about a second defined central axis, the energy source component is electrically connected to the sub-controller, the braking mechanism includes a friction plate, a pressure plate and a driving component arranged in sequence, the driving component is arranged on the housing, the driving component is connected to the energy source component, and the sub-controller is electrically connected to the main controller.

[0017] Furthermore, the braking mechanism includes a distance sensor, which is disposed on one side of the driving member and is electrically connected to the sub-controller.

[0018] Furthermore, a pressure sensor is provided at the free end of the pressure plate corresponding to the driving member, and a plurality of vibration sensors are provided on one side of the pressure plate relative to the friction plate, and both the pressure sensor and the vibration sensor are electrically connected to the sub-controller.

[0019] Furthermore, the braking mechanism includes two pairs of guide members, each pair of guide members is axially symmetrical about the central axis of the driving member, the guide members include a guide sleeve and a guide rod, the guide sleeve is connected to the box body, the guide rod is slidably matched with the guide sleeve, and the end of the guide rod away from the guide sleeve is connected to the pressure plate.

[0020] Furthermore, the driving component is a pneumatic telescopic rod or a hydraulic telescopic rod, and the energy source component is an air pump or an oil pump.

[0021] Furthermore, it includes a counterweight group arranged on the rotating shaft, the counterweight group is located between the first support and the frame, the counterweight group is composed of a plurality of counterweight plates arranged in sequence along the axial direction of the rotating shaft, and limit plates are provided on both sides of the counterweight group, and a plurality of flat keys are provided between each of the limit plates and the rotating shaft.

[0022] Compared with the prior art, the technical solution of this application has the following beneficial technical effects:

[0023] (1) The present application uses the cooperation between the rotating device and the brake test device to enable one or two brake test devices to perform brake tests, thereby realizing the testing of single-sided braking or double-sided braking conditions.

[0024] (2) The present application can prevent the rotating shaft from axially moving by using the spherical ball, thereby maintaining the stability of the test process.

[0025] (3) The distance sensor of the present application detects the distance between the pressure plate and the guide sleeve, thereby preventing the pressure plate and the guide sleeve from colliding.

[0026] (4) After the present application detects the movement signal of the pressure plate through the distance sensor, it can adjust the feed speed of the pressure plate through the pressure of the pressure sensor and the local vibration force of the vibration sensor under the premise of meeting the braking time, thereby assisting the developers to optimize and debug the control strategy of the braking test device.

[0027] (5) The present application uses a counterweight to simulate the inertia of an actual vehicle during braking, making the braking condition simulation closer to reality. BRIEF DESCRIPTION OF THE DRAWINGS

[0028] Figure 1 This is a general assembly diagram of a simulation test platform provided in an embodiment of the utility model;

[0029] Figure 2 It is a vertical cross-sectional view of a simulation test platform provided in an embodiment of the utility model;

[0030] Figure 3 It is a cross-sectional view of a brake test device in an embodiment of the utility model;

[0031] Figure 4 A cross-sectional view of a brake mechanism in an embodiment of the utility model;

[0032] Figure 5 This is a connection diagram of the driving component and the energy source component in the embodiment of the utility model;

[0033] Figure 6 It is a structural schematic diagram of a pressing plate from one viewing angle in an embodiment of the utility model;

[0034] Figure 7 It is a structural schematic diagram of the pressing plate from another perspective in the embodiment of the utility model;

[0035] Figure 8 This is a schematic diagram of the structure of the weight plate in the embodiment of the utility model;

[0036] Fig. 9 The present invention is a circuit connection diagram of a simulation test platform provided in an embodiment of the present invention.

[0037] In the accompanying drawings, the components represented by the reference numerals are listed as follows:

[0038] L1, first defined center axis; L2, second defined center axis; 10, stand; 11, base plate; 12, frame; 121, thrust bearing; 13, first support; 14, second support; 141, sphere; 20, rotating device; 21, driving motor; 22, rotating shaft; 23, rotating flange; 30, brake test device; 31, housing; 32, brake mechanism; 321, friction plate; 322, pressure plate; 3211, pressure sensor; 3212, vibration sensor; 323, driving member; 324, guide member; 3241, guide sleeve; 3242, guide rod; 33, auxiliary controller; 34, energy source member; 35, distance sensor; 40, speed sensor; 50, main controller; 60, counterweight; 61, limit plate; 62, flat key. DETAILED DESCRIPTION

[0039] In order to facilitate understanding of the present application, the present application will be described more fully below with reference to the relevant drawings. Embodiments of the present application are provided in the drawings. However, the present application can be implemented in many different forms and is not limited to the embodiments described herein. On the contrary, the purpose of providing these embodiments is to make the disclosure of the present application more thorough and comprehensive.

[0040] Unless otherwise defined, all technical and scientific terms used herein have the same meaning as those commonly understood by those skilled in the art to which this application belongs. The terms used herein in the specification of this application are only for the purpose of describing specific embodiments and are not intended to limit this application.

[0041] It will be appreciated that spatial relationship terms such as "under," "beneath," "below," "under," "above," "above," etc., may be used herein to describe the relationship of an element or feature shown in the figures to other elements or features. It will be appreciated that, in addition to the orientations shown in the figures, spatial relationship terms also include different orientations of the device in use and operation. For example, if the device in the accompanying drawings is flipped, an element or feature described as "under other elements" or "under it" or "under it" will be oriented as being "above" the other elements or features. Thus, the exemplary terms "under" and "under" may include both upper and lower orientations. In addition, the device may also include additional orientations (e.g., rotated 90 degrees or other orientations), and the spatial descriptors used herein are interpreted accordingly.

[0042] When used herein, the singular forms "a", "an", and "said / the" may also include plural forms, unless the context clearly indicates otherwise. It should also be understood that the terms "include / comprise" or "have" etc. specify the presence of stated features, wholes, steps, operations, components, parts or combinations thereof, but do not exclude the possibility of the presence or addition of one or more other features, wholes, steps, operations, components, parts or combinations thereof.

[0043] Refer to the attached Figures 1 to 7 As shown, the utility model provides a technical solution: a simulation test platform, including a test bench 10, a rotating device 20, two brake test devices 30, a speed sensor 40 and a main controller 50, the test bench 10 includes a base plate 11 and a frame 12, and the frame 12 is arranged on the base plate 11; the rotating device 20 includes a driving motor 21, a rotating shaft 22 and a rotating flange 23, the rotating shaft 22 has a first end and a second end, the first end is connected to the output end of the driving motor 21, the rotating shaft 22 is rotatably arranged on the frame 12, the rotating flange 23 is arranged on the rotating shaft 22, and the rotating flange 23 is located in the frame 12; the two brake test devices 30 are arranged in the frame 12, and the two brake test devices 30 are axially symmetrical about the first defined central axis L1; the speed sensor 40 is arranged on the rotating shaft 22; the main controller 50 is arranged on the base plate 11 or the frame 12, and the driving motor 21 and the speed sensor 40 are both electrically connected to the main controller 50.

[0044] For example, the speed sensor 40 may be located on one side or the other side of the frame 12. The drive motor 21 may be a reduction motor, a servo motor or a reduction motor, etc. The brake test device 30 may have the same structure as the automobile wire control brake system.

[0045] According to this embodiment, when used specifically, the main controller 50 sets a preset speed for the drive motor 21, so that the drive motor 21 drives the rotating shaft 22 to drive the rotating flange 23 to rotate, and the speed sensor 40 detects the speed of the rotating shaft 22. After the speed of the rotating shaft 22 reaches the preset speed, the main controller 50 controls the drive motor 21 to stop, and the brake test device brakes the rotating flange 23. At this time, the speed sensor 40 transmits the real-time speed of the rotating shaft 22 back to the main controller 50 to simulate the change of the actual vehicle speed during the braking process. In this way, one or two brake test devices 30 are used for braking testing, and the braking conditions of single-sided braking or double-sided braking can be tested.

[0046] Refer to the attached Figures 1-2 As shown, in some embodiments, the rotating shaft 22 is connected to the frame 12 via at least one thrust bearing 121 .

[0047] Exemplarily, when there is one thrust bearing 121 , the rotating shaft 22 is connected to the vertical plate on the left or right side of the frame 12 through the thrust bearing 121 ; when there are two thrust bearings 121 , the rotating shaft 22 is connected to the vertical plate on the left or right side of the frame 12 through the thrust bearing 121 .

[0048] According to this embodiment, the thrust bearing 121 can both support the rotating shaft 22 and reduce the friction between the rotating shaft 22 and the frame 12 .

[0049] Refer to the attached Figures 1-2 As shown, in some embodiments, the stand 10 includes a first support 13 disposed on the bottom plate 11 , the first support 13 is disposed at the second end, and the rotating shaft 22 is rotatably connected to the first support 13 .

[0050] Exemplarily, the rotating shaft 22 and the first support 13 may be clearance-fitted or connected via a bearing.

[0051] According to this embodiment, the first support 13 supports the rotating shaft 22 so as to keep the rotating shaft 22 balanced.

[0052] Refer to the attached Figures 1-2 As shown, in some embodiments, the stand 10 includes a second support 14 disposed on the bottom plate 11, the second support 14 is disposed opposite to the second end, and a ball 141 is disposed between the second support 14 and the second end.

[0053] According to this embodiment, the ball 141 can prevent the rotating shaft from moving axially, thereby maintaining the stability of the test process.

[0054] Refer to the attached Figures 1 to 5 As shown in Figures 9 and 9, in some embodiments, the braking test device 30 includes a housing 31, two braking mechanisms 32, a sub-controller 33 and an energy source component 34. The housing 31 has an opening for the rotating flange 23 to rotate. The two braking mechanisms 32 and the sub-controller 33 are all arranged in the housing 31. The two braking mechanisms 32 are axially symmetrical about the second defined central axis L2. The energy source component 34 is electrically connected to the sub-controller 33. The braking mechanism 32 includes a friction plate 321, a pressure plate 322 and a driving component 323 arranged in sequence. The driving component 323 is arranged on the housing 31. The driving component 323 is connected to the energy source component 34, and the sub-controller 33 is electrically connected to the main controller.

[0055] Exemplarily, the driving member 323 is a pneumatic telescopic rod or a hydraulic telescopic rod, and the energy source member 34 is an air pump or an oil pump; for example, when the driving member 323 is a pneumatic telescopic rod, the energy source member 34 is an air pump; when the driving member 323 is a hydraulic telescopic rod, the energy source member 34 is an oil pump. The input end of the driving member 323 is connected to the output end of the energy source member 34.

[0056] According to this embodiment, when braking the rotating flange 23, the main controller 50 sends a braking signal to the sub-controller 33, allowing the sub-controller 33 to control the energy source component 34 to supply high-pressure fluid to the driving component 323, so that the driving component 323 pushes the pressure plate 322 and the friction plate 321 to brake the rotating flange 23.

[0057] Refer to the attached Figure 3 and 9 As shown, in some embodiments, the braking mechanism 32 includes a distance sensor 35 , which is disposed on one side of the driving member 323 , and the distance sensor 35 is electrically connected to the sub-controller 33 .

[0058] According to this embodiment, based on the fact that the length of the guide sleeve 3241 is fixed, when the pressing plate 322 moves, the distance sensor 35 detects the distance between the pressing plate 322 and the guide sleeve 3241 , thereby preventing the pressing plate 322 from colliding with the guide sleeve 3241 .

[0059] Refer to the attached Figure 6 and 9 As shown, in some embodiments, a pressure sensor 3211 is set at the free end of the pressure plate 322 corresponding to the driving member 323, and a plurality of vibration sensors 3212 are set on the side of the pressure plate 322 relative to the friction plate 321, and both the vibration sensor 3212 and the pressure sensor 3211 are electrically connected to the sub-controller 33.

[0060] According to this embodiment, the pressure sensor 3211 is used to detect the pressure between the telescopic rod and the pressure plate 322, and the vibration sensor 3212 is used to detect the local vibration force when the friction plate 321 and the pressure plate 322 contact the rotating flange 23. After the distance sensor 35 detects the movement signal of the pressure plate 322, the feed speed of the pressure plate 322 can be adjusted by the pressure of the pressure sensor 3211 and the local vibration force of the vibration sensor 3212 under the premise of meeting the braking time, thereby assisting the developers to optimize and debug the control strategy of the brake test device 30.

[0061] Refer to the attached Figures 3-4 As shown, in some embodiments, the braking mechanism 32 includes two pairs of guide members 324, each pair of guide members 324 is axially symmetrical about the central axis of the driving member 323, the guide members 324 include a guide sleeve 3241 and a guide rod 3242, the guide sleeve 3241 is connected to the box body 31, the guide rod 3242 is slidably matched with the guide sleeve 3241, and the end of the guide rod 3242 away from the guide sleeve 3241 is connected to the pressure plate 322.

[0062] According to this embodiment, the guide rod 3242 and the guide sleeve 3241 can prevent the pressing plate 322 from being deflected during the extension and retraction process, so that the pressing plate 322 can maintain linear movement, thereby ensuring the stability of the pressing plate 322.

[0063] Refer to the attached Figures 1-2 As shown in Figure 8, in some embodiments, a counterweight group is provided on the rotating shaft 22, the counterweight group is located between the first support 13 and the frame 12, the counterweight group is composed of a plurality of counterweight plates 60 arranged in sequence along the axial direction of the rotating shaft 22, and a limit plate 61 is provided on both sides of the counterweight group, and a plurality of flat keys 62 are provided between each limit plate 61 and the rotating shaft 22.

[0064] According to this embodiment, the inertia of the actual car during braking is simulated by the counterweight plate 60, so that the braking condition simulation is closer to reality. The limit plate 61 is fastened to the rotating shaft 22 by a flat key 62, which can not only limit the rotation of the counterweight plate 60 with the rotating shaft 22, but also facilitate the disassembly and assembly of the limit plate 61, and facilitate the adjustment of the number of counterweight plates 60.

[0065] The above are only preferred embodiments of the present invention and are not intended to limit the present invention. Any modifications, equivalent substitutions, improvements, etc. made within the spirit and principles of the present invention should be included in the protection scope of the present invention.

Claims

1. A simulation test platform, characterized in that: include: A stand (10) comprises a bottom plate (11) and a frame (12), wherein the frame (12) is arranged on the bottom plate (11); A rotating device (20), comprising a driving motor (21), a rotating shaft (22) and a rotating flange (23), wherein the rotating shaft (22) has a first end and a second end, wherein the first end is connected to an output end of the driving motor (21), the rotating shaft (22) is rotatably disposed on the frame (12), the rotating flange (23) is disposed on the rotating shaft (22), and the rotating flange (23) is located inside the frame (12); Two brake test devices (30) are arranged in the frame (12), and the two brake test devices (30) are axially symmetrical about a first defined central axis (L1); A rotation speed sensor (40) is arranged on the rotating shaft (22); A main controller (50) is disposed on the base plate (11) or the frame (12); the drive motor (21) and the rotation speed sensor (40) are both electrically connected to the main controller (50).

2. A simulation test platform according to claim 1, characterized in that: The rotating shaft (22) is connected to the frame (12) via at least one thrust bearing (121).

3. A simulation test platform according to claim 1, characterized in that: The stand (10) comprises a first support (13) arranged on the bottom plate (11), the first support (13) being arranged at the second end, and the rotating shaft (22) being rotatably connected to the first support (13).

4. A simulation test platform according to claim 3, characterized in that: The stand (10) comprises a second support (14) arranged on the bottom plate (11), the second support (14) being arranged opposite to the second end, and a round ball (141) being arranged between the second support (14) and the second end.

5. A simulation test platform according to any one of claims 1 to 4, characterized in that: The brake test device (30) comprises a housing (31), two brake mechanisms (32), a sub-controller (33) and an energy source component (34); the housing (31) has an opening for the rotating flange (23) to rotate; the two brake mechanisms (32) and the sub-controller (33) are both arranged in the housing (31); the two brake mechanisms (32) are axially symmetrical about a second defined central axis (L2); the energy source component (34) is electrically connected to the sub-controller (33); the brake mechanism (32) comprises a friction plate (321), a pressure plate (322) and a driving component (323) which are arranged in sequence; the driving component (323) is arranged on the housing (31); the driving component (323) is connected to the energy source component (34); and the sub-controller (33) is electrically connected to the main controller (50).

6. A simulation test platform according to claim 5, characterized in that: The braking mechanism (32) comprises a distance sensor (35), wherein the distance sensor (35) is arranged on one side of the driving member (323), and the distance sensor (35) is electrically connected to the auxiliary controller (33).

7. A simulation test platform according to claim 6, characterized in that: A pressure sensor (3211) is provided at the free end of the pressure plate (322) corresponding to the driving member (323); a plurality of vibration sensors (3212) are provided on one side of the pressure plate (322) relative to the friction plate (321); and both the pressure sensor (3211) and the vibration sensor (3212) are electrically connected to the auxiliary controller (33).

8. A simulation test platform according to claim 7, characterized in that: The braking mechanism (32) comprises two pairs of guide members (324), each pair of the guide members (324) being axially symmetrical about the central axis of the driving member (323), the guide members (324) comprising a guide sleeve (3241) and a guide rod (3242), the guide sleeve (3241) being connected to the box body (31), the guide rod (3242) being slidably matched with the guide sleeve (3241), and one end of the guide rod (3242) away from the guide sleeve (3241) being connected to the pressure plate (322).

9. A simulation test platform according to claim 8, characterized in that: The driving component (323) is a pneumatic telescopic rod or a hydraulic telescopic rod, and the energy source component (34) is an air pump or an oil pump.

10. A simulation test platform according to claim 3, characterized in that: The invention comprises a counterweight group arranged on the rotating shaft (22), the counterweight group being located between the first support (13) and the frame (12), the counterweight group being composed of a plurality of counterweight plates (60) arranged in sequence along the axial direction of the rotating shaft (22), a limiting plate (61) being provided on both sides of the counterweight group, and a plurality of flat keys (62) being provided between each limiting plate (61) and the rotating shaft (22).

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