Disclosure of Invention
The application provides a brake disc detection device which can improve the accuracy of a detection result.
A brake disc sensing device comprising:
A drive assembly including a rotatable rotor;
The torque sensor comprises a rotor connecting shaft and a brake disc connecting shaft which are coaxially arranged, the rotor connecting shaft is connected with the rotor, the brake disc connecting shaft is used for being relatively fixed with a brake disc, and the torque sensor can generate a first electric signal when the rotor connecting shaft and the brake disc connecting shaft relatively rotate around an axis;
The jump sensor comprises a detection head and a control unit, wherein the detection head is used for being contacted with the disc surface of the brake disc, and the jump sensor can generate a second electric signal when the detection head is displaced;
The control and processing assembly is electrically connected with the driving assembly, the torque sensor and the runout sensor, the control and processing assembly is used for controlling the starting and stopping of the driving assembly, the torque sensor is used for outputting the first electric signal to the control and processing assembly, the control and processing assembly determines the dragging moment of the brake disc according to the first electric signal, the runout sensor is used for outputting the second electric signal to the control and processing assembly, and the control and processing assembly determines the runout of the end face of the brake disc according to the second electric signal.
Optionally, the brake disc detection device further comprises a connection assembly, the connection assembly comprises a connection seat and a plurality of connection portions arranged on the connection seat, the connection portions are arranged to be distributed at intervals around a rotating shaft of the brake disc and used for being kept relatively fixed with the brake disc, and the brake disc connection shaft is connected with the connection seat.
Optionally, the connecting assembly further comprises a telescopic rod, one end of the telescopic rod is connected with the brake disc connecting shaft, the other end of the telescopic rod is connected with the connecting seat, the axis of the telescopic rod is set to coincide with the rotating shaft of the brake disc, and the telescopic direction of the telescopic rod is the same as the direction of the axis of the telescopic rod.
Optionally, the telescopic rod is detachably connected with the connecting seat, and/or
The telescopic rod is detachably connected with the brake disc connecting shaft.
Optionally, the jump sensor is arranged on the telescopic rod.
Optionally, the jump sensor is detachably connected with the telescopic rod.
Optionally, the drive assembly includes a speed adjustable drive motor.
Optionally, the runout sensor comprises a displacement sensor.
Optionally, the control and processing assembly comprises an operation panel, and the operation panel is provided with a control identifier capable of inputting control instructions.
Optionally, the control and processing assembly further includes a display screen for displaying the determined drag torque and end runout.
The application provides a brake disc detection device, wherein a driving component is used for driving a brake disc to rotate, and a torque sensor and a runout sensor are used for respectively inputting signals acquired by the respective torque sensor and the runout sensor to a control and processing component, so that automatic acquisition and calculation of dragging moment and end face runout are realized, the problem that the rotating speed of the brake disc is not controlled during manual operation is avoided, and the accuracy of a detection result is improved.
Detailed Description
The technical solutions in the embodiments (or "implementations") of the present application will be clearly and completely described herein with reference to the accompanying drawings. When the following description refers to the accompanying drawings, the same numbers in different drawings refer to the same or similar elements, unless otherwise indicated.
If there are terms (e.g., upper, lower, left, right, front, rear, inner, outer, top, bottom, center, vertical, horizontal, longitudinal, lateral, length, width, counterclockwise, clockwise, axial, radial, circumferential, etc.) related to directional indications or positional relationships in embodiments of the present application, such terms are used merely to explain the relative positional relationships, movement, etc. between the components at a particular pose (as shown in the drawings), and if the particular pose is changed, the directional indications or positional relationships are correspondingly changed. In addition, the terms "first", "second", etc. in the embodiments of the present application are used for descriptive convenience only and are not to be construed as indicating or implying relative importance.
Referring to fig. 1, fig. 1 is a schematic diagram of a brake disc detection apparatus according to an exemplary embodiment of the present application.
The application provides a brake disc detection device 100, wherein the detection device 100 is used for detecting the drag torque and the end face runout of a brake disc, and the accuracy of a detection result is higher. The drag torque refers to a braking torque generated by the fact that contact still exists between a friction plate and a brake caliper when a brake of an automobile is in a non-braking state. The runout of the end face refers to the axial displacement of the disc surface at a distance of 10mm from the maximum outer diameter when the brake disc rotates.
As shown in fig. 1, the detection device 100 includes a drive assembly 10, a torque sensor 20, a runout sensor 30, and a control and processing assembly 40. The drive assembly 10 includes a rotatable rotor and includes, but is not limited to, an adjustable speed motor.
The torque sensor 20 comprises a rotor connecting shaft and a brake disc connecting shaft which are coaxially arranged, wherein the rotor connecting shaft is connected with the rotor, and the brake disc connecting shaft is used for keeping relative fixation with the brake disc. The torque sensor 20 may generate a first electrical signal upon relative rotation of the rotor shaft and the brake disc shaft about an axis. The torque sensor 20 includes, but is not limited to, a strain gauge torque sensor.
The runout sensor 30 comprises a detection head for contacting the disc surface of the brake disc, said runout sensor 30 being adapted to generate a second electrical signal upon displacement of said detection head. The direction of the displacement of the detection head is perpendicular to the disk surface, and the detection head is arranged to be contacted with the position of the disk surface with the maximum outer diameter of 10 mm. The runout sensor 30 may be provided as a displacement sensor.
A control and processing assembly 40 is electrically connected to the drive assembly 10, the torque sensor 20 and the bounce sensor 30, the control and processing assembly 40 being configured to control the start and stop of the drive assembly 10. In one embodiment, the control and processing assembly 40 includes an operation panel, and a control identifier capable of inputting a control command is disposed on the operation panel, and an operator can input the control command to the control and processing assembly 40 by touching the control identifier, so as to control the driving assembly 10 to start or stop, so that the operation process is faster and more convenient.
The torque sensor 20 may output the first electrical signal to the control and processing assembly 40, and the control and processing assembly 40 determines a drag torque of the brake disc based on the first electrical signal. In one embodiment, the driving assembly 10 may be controlled to continuously operate for a certain period of time, so that the driving assembly 10 may drive the brake disc to rotate for a plurality of circles, and the control and processing assembly 40 may convert the continuously input first electric signal into a torque curve, so as to determine the drag torque according to the torque curve. The specific determination mode of the drag torque is not limited, and for example, the maximum value or the average value on the corresponding torque curve or the torque value after being stabilized on the corresponding torque curve can be taken.
The runout sensor 30 may output a second electrical signal to the control and processing assembly 40, which determines the runout of the brake disc from the second electrical signal. In one embodiment, during the rotation of the brake disc, the runout sensor 30 may continuously output a second electrical signal to the control and processing assembly 40, which converts the continuously input second electrical signal into an end runout curve, and determines the end runout according to the end runout curve. The specific manner of determining the end face runout is not limited, and may take, for example, the maximum value or the average value on the corresponding end runout curve, but is not limited thereto.
As can be seen from the above description, the driving assembly 10 is used to drive the brake disc to rotate, and the torque sensor 20 and the runout sensor 30 are used to input the respective collected signals to the control and processing assembly 40, so as to realize automatic acquisition and calculation of the dragging moment and the runout of the end face, avoid the problem of uncontrolled rotation speed of the brake disc during manual operation, and improve the accuracy of the detection result.
In one embodiment, the brake disc detecting device 100 further includes a connection assembly 50, the connection assembly 50 includes a connection seat 51 and a plurality of connection portions 511 connected to the connection seat 51, the plurality of connection portions 511 are disposed to be spaced around a rotation axis of the brake disc and are used to be relatively fixed to the brake disc, and a brake disc connection shaft of the torque sensor 20 is connected to the connection seat 51. In this scheme, through setting up coupling assembling 50, can utilize a plurality of connecting portions 501 of interval distribution to keep relatively fixed with the brake disc, make the connection more reliable, the connection force is more balanced, ensures that the brake disc rotates more near at the uniform velocity.
In a specific embodiment, each of the connection portions 511 may be provided in a sleeve-type structure, for example, each of the connection portions 511 may be coupled with a fastening bolt for connecting the hub and the tire, respectively, such that each of the connection portions 511 is held relatively fixed to the hub and the tire, and thus to the brake disc, but is not limited thereto.
In one embodiment, the connecting assembly 50 further includes a telescopic rod 52, one end of the telescopic rod 52 is connected with the brake disc connecting shaft, the other end of the telescopic rod 52 is connected with the connecting seat 51, the axis of the telescopic rod 52 is set to coincide with the rotating shaft of the brake disc, and the telescopic direction of the telescopic rod 52 is the same as the direction of the axis of the telescopic rod. In this way, the distances between the plurality of connecting parts 511 and the brake disc can be adjusted through the extension and contraction of the extension and contraction rod 52, the positions of the plurality of connecting parts 511 are more flexible, and reliable connection is conveniently realized through the connecting assembly 50.
In one embodiment, the telescopic rod 52 is detachably connected to the connection seat 51 and/or the telescopic rod 52 is detachably connected to the brake disc connection shaft. In this way, the components of the inspection apparatus 100 can be disassembled and stored after the inspection is completed, and the occupied space is small.
In one embodiment, the jump sensor 30 is provided to the telescopic rod 52, i.e. the jump sensor 30 is mounted to the telescopic rod 52. In this way, the distance between the runout sensor 30 and the brake disc can be adjusted by the telescopic rod 52, so that the position of the runout sensor 30 is more flexible, and the benign contact between the detection head of the runout sensor 30 and the brake disc surface is facilitated.
In one embodiment, the jump sensor 30 is detachably connected to the telescoping pole 52. Thus, the jump sensor 30 can be conveniently replaced and maintained, and the jump sensor 30 can be conveniently stored.
In one embodiment, the driving assembly 10 includes a speed-adjustable driving motor, and by adjusting the rotation speed of the driving motor, different rotation speeds of the wheels during rotation can be simulated, which is closer to the actual vehicle condition, so that the detection results of the dragging moment and the end face runout are more accurate. The drive assembly 10 may also employ a rotary cylinder.
In one embodiment, the control and processing assembly 40 may also include a display screen for displaying the determined drag torque and end runout. That is, when the control and processing component 40 calculates the drag torque and the end runout, the drag torque and the end runout can be directly displayed through the display screen, so that the drag torque and the end runout are more visual and convenient for operators to check. Of course, the display screen can also be used for displaying the control identifier, i.e. the display screen is set as a touch screen, and an operator can click the control identifier in a touch manner, so that a corresponding control instruction is input.
When the detecting device 100 is used, the plurality of connecting parts 511 are respectively connected with the tires through bolts, the control and processing assembly 40 controls the driving motor to rotate, the driving motor drives the wheels (brake discs) to rotate for N circles through the connecting assembly 50, the torque sensor 20 inputs a first electric signal corresponding to the torque of the wheel end to the control and processing assembly 40, the control and processing assembly 40 records all torque data in the process of rotating for N circles, and the dragging moment is determined according to the generated torque curve. The runout sensor 30 inputs a second electrical signal corresponding to the runout of the end surface to the control and processing assembly 40, and the control and processing assembly 40 records all the runout data of the end surface in the process of rotating for N circles and determines the runout of the end surface according to the generated runout curve of the end surface.
The detection device 100 provided by the application has a simple structure, is convenient to install when in use, is disassembled and stored when not in use, and is convenient to carry. In addition, the test scheme of the detection device 100 is simple and effective, the test efficiency is improved, the numerical reading is more visual and accurate, the data can be stored for a long time, and the problem analysis and the problem solving are facilitated.
The foregoing description of the preferred embodiments of the application is not intended to be limiting, but rather to enable any modification, equivalent replacement, improvement or the like to be made within the spirit and principles of the application.