CN212254024U - Device for measuring tire morphology by multiple line laser sensors - Google Patents
Device for measuring tire morphology by multiple line laser sensors Download PDFInfo
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- CN212254024U CN212254024U CN202020688029.4U CN202020688029U CN212254024U CN 212254024 U CN212254024 U CN 212254024U CN 202020688029 U CN202020688029 U CN 202020688029U CN 212254024 U CN212254024 U CN 212254024U
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Abstract
The utility model discloses a device of a plurality of line laser sensor measurement tire appearance. The utility model discloses a probe measurement system and moving system. The movement system comprises the lifting movement of the measuring device and the rotation movement of the sensors at two sides, and the measuring light beams can cover the surface and the side surfaces of the tire by adjusting the position of the lifting platform and the angles of the rotary tables at two sides; the probe measuring system comprises three line laser sensors, one line laser sensor is fixed at the middle position of the bottom of the measuring system, and the other two line laser sensors are symmetrically arranged on two sides and are driven to rotate by one rotary table respectively. And the three linear laser sensors perform attitude adjustment to make the measuring beams collinear, and coordinate registration of the three sensors is realized through coordinate transformation after the collinear adjustment. The utility model discloses a concatenation a plurality of line laser sensor's measured data realize effectively promoting the automation level and the quality control ability of tire production process to tire profile on a large scale, wide-angle detection.
Description
Technical Field
The utility model relates to an industrial automation measures the field, especially relates to a device and method of tire appearance are measured in concatenation of a plurality of line laser sensor.
Background
The tire is an important product in the public transportation industry as a key part of an automobile. The uniformity of tire manufacture has a direct impact on the overall quality and performance of the automobile and is also the key to ensure the comfort and safety of the automobile. In addition, the patterns on the tire tread of the automobile tire are also key influencing factors of the tire performance, and mainly comprise pattern blocks and pattern grooves, which determine whether the tire can fully exert the performances of traction, braking, ground grabbing, noise, paddling, turning, abrasion, rolling resistance and the like.
In order to ensure good performance of the tire, characteristics of the tire, such as circumferential direction, radial run-out, lines and the like, need to be detected, and tire morphology detection is a key means for completing the index detection. The tire needs to be rolled in multiple passes in the process of processing from a green tire to a finished product so as to generate patterns and lines meeting the requirements of the product. In order to enable the rolled tire to meet the requirements, the pressed shape of the roller needs to be detected after rolling, so that data guidance is provided for next rolling.
In present tire manufacturing production line, production of multiple model tire need be carried out to a production line usually, for guaranteeing tire production efficiency and product quality, not only need detect process automation, require measuring equipment can satisfy the measurement demand of different model tires moreover. The detection problem in the production process of large tires such as truck tires is particularly prominent, and the traditional visual detection and structural light detection methods are limited in that the measurement range cannot cover the whole tire outline, so that the measurement of the overall appearance cannot be realized.
Disclosure of Invention
The utility model discloses to the difficult measurement problem of tire appearance, a plurality of line laser sensor concatenation that provide an adjustable measurement gesture measures tire appearance volume device and method, can satisfy the demand on a large scale that the tire appearance was measured, and the while is adaptable produces the detection of line multiple model tire.
In order to achieve the above purpose, the utility model adopts the following technical scheme:
a device for measuring the appearance of a tire by splicing a plurality of linear laser sensors comprises a horizontal beam (1), a vertical lifting table (2), an expansion plate (3), an electric rotary table (4), a linear laser sensor (5), a measuring beam (6), a detection area (7), a measured profile (8), a measured tire (9), a rotating shaft (10), a support (11), a connecting device (12), a rotary encoder (13) and a bottom plate (14).
The horizontal beam (1) is fixed on the bottom plate (14) through an outer support, a vertical lifting platform (2) is arranged in the middle of the horizontal beam (1), an expansion plate (3) is arranged on the vertical lifting platform (2), and two sides of the expansion plate (3) are respectively provided with an electric turntable (4); the middle part of the lower end of the expansion plate (3) and the electric turntables (4) at two sides are respectively provided with a line laser sensor (5), and the line laser sensors at two sides are correspondingly arranged on the electric turntables (4) at two sides; the line laser sensor (5) emits a fan-shaped measuring beam (6) downwards;
the rotating shaft (10) is arranged on the bottom plate (14) through a bracket (11); the tested tire (9) is fixedly arranged on the rotating shaft (10), and the rotation of the rotating shaft (10) drives the tested tire (9) to rotate; the rotating shaft is connected with the rotary encoder (13) through the connecting device (12), the rotary encoder (13) and the rotating shaft (10) rotate synchronously in the process that the rotating shaft drives the tested tire (9) to rotate, and the rotary encoder (13) generates trigger pulses to be conveyed to each line laser sensor (5) to realize external trigger synchronous sampling.
Furthermore, the height of the bracket (11) is larger than the radius of the tested tire (9) so as to ensure that the tire (9) is not contacted with the ground.
Furthermore, the line laser sensors (5) positioned in the middle of the lower end of the expansion plate (3) are fixed, and the line laser sensors (5) on the two sides can be driven to rotate by the electric rotary table (4).
Furthermore, the height of the vertical lifting platform (2) and the angles of the electric rotary tables (4) on the left side and the right side are adjusted, so that the detected outline (8) of the detected tire (9) is positioned in the detection area (7); at the moment, the line laser sensor (5) can collect a series of point positions of the laser beam irradiated on the position of the tested tire (9) along the section line of the tire.
Furthermore, the expansion plate (3) is in a clothes hanger structure and is symmetrical left and right.
Further, the specific measurement process is as follows:
firstly, an upper computer (15) is connected with a vertical lifting platform (2), an electric rotary table (5) and a rotating shaft (10) in the device;
after the tire model is determined, the device is adjusted to the optimal measurement attitude, namely the upper computer (15) sends a motion instruction to the lifting table (2), the electric rotary table (5) and the rotating shaft (10) to adjust the position and the attitude of the linear laser sensor (5); the measured profile (8) of the measured tire (9) is positioned in the detection area (7) by adjusting the angles of the electric turntables (4) at the left side and the right side;
in the whole measurement process, the line laser sensor is kept static, and only the tire to be measured rotates; the line laser sensor (5) collects a series of point positions of laser beams irradiated on the positions of the tested tires (9) along the tire sectional lines in the measuring process, and sends the collected point cloud data to the upper computer (15); the upper computer (15) calculates contour lines under different angles according to the collected point cloud data; after the contour line of a circle is obtained, the appearance of the outer side of the whole tire can be spliced;
the point cloud data comprises the measurement data of the line laser sensor and the pulse number of the rotary encoder.
Furthermore, the line laser sensors emit fan-shaped light beams, and the fan-shaped light beams emitted by the three line laser sensors are positioned in the same plane; after the attitude adjustment of the sensor is completed, the tire to be measured is located in the measuring range of the sensor, so that the measuring data of each line laser sensor is obtained.
Furthermore, the measurement data among the three line laser sensors have different coordinate systems, after the upper computer acquires the measurement data of the line laser sensors, the spatial coordinate transformation of the measurement data is needed to be carried out, the measurement data are converted into a unified coordinate system, and then the measurement data of the three line laser sensors are fused into a contour line at the measurement position.
Furthermore, the tested tire is fixed on the rotating shaft and driven by the rotating shaft to rotate, and the rotary encoder is connected with the rotating shaft through the coupler, so that the output pulse number of the rotary encoder and the rotating angle of the rotating shaft have a linear relation, and the rotating angle of the rotating shaft is obtained according to the pulse number output by the rotary encoder;
the three linear laser sensors are triggered by the rotary encoder to measure, and one contour line of the measured tire is measured each time; the contour line corresponds to the encoder pulse, so that the tire rotation angle corresponding to the measured contour line is obtained;
with the rotation of the tested tire, the contour lines of the tire under different angles can be measured; and after the obtained encoder pulse number and the measured data of the linear laser sensor are obtained, calculating the space coordinate of each measuring point, and constructing the overall appearance data of the measured tire.
The utility model discloses beneficial effect as follows:
the utility model discloses a make up a plurality of line laser sensor, expanded measuring range, overcome single line laser sensor's range restriction, combine the sensor gesture adjustment of novelty, can realize the full automatization to multiple model tire on same production line and detect, can effectively promote the efficiency and the quality of tire production.
Drawings
FIG. 1 is a schematic view of a device for measuring the tire topography by multiple line laser splicing,
figure 2 is a schematic view of different measurement poses used for measuring different models of tyres,
figure 3 is a schematic diagram of a plurality of line laser sensors acquiring a tire profile,
FIG. 4 is a three-dimensional structure layout of a plurality of line laser sensors measuring tire topography.
Detailed Description
The present invention will be described in detail with reference to the accompanying drawings.
As shown in FIG. 1, the device for measuring the tire topography by splicing a plurality of line laser sensors comprises a probe measuring system and a motion system. The movement system comprises the lifting movement of the measuring device and the rotation movement of the sensors at two sides, and the measuring light beams can cover the surface and the side surface of the tire by adjusting the position of the lifting platform and the angles of the rotary tables at two sides so as to adapt to the measurement of the tires with different sizes; the probe measuring system comprises three linear laser sensors, one linear laser sensor is fixed at the middle position of the bottom of the measuring system, and the other two rotary tables are symmetrically arranged on two sides and are driven to rotate by one rotary table respectively. And the three linear laser sensors perform attitude adjustment to make the measuring beams collinear, and coordinate registration of the three sensors is realized through coordinate transformation after the collinear adjustment.
The utility model discloses the device specifically includes horizontal beam (1), vertical lift platform (2), expansion board (3), electric turntable (4), line laser sensor (5), measuring beam (6), detection area (7), surveyed profile (8), surveyed tire (9), pivot (10), support (11), connecting device (12), rotary encoder (13), bottom plate (14).
The horizontal beam (1) is fixed on the bottom plate (14) through an outer support, a vertical lifting platform (2) is arranged in the middle of the horizontal beam (1), an expansion plate (3) is arranged on the vertical lifting platform (2), and two sides of the expansion plate (3) are respectively provided with an electric turntable (4); the middle part of the lower end of the expansion plate (3) and the electric turntables (4) at two sides are respectively provided with a line laser sensor (5), and the line laser sensors at two sides are correspondingly arranged on the electric turntables (4) at two sides; the line laser sensor (5) emits a fan-shaped measuring beam (6) downwards;
the rotating shaft (10) is arranged on the bottom plate (14) through a bracket (11); the tested tire (9) is fixedly arranged on the rotating shaft (10), and the rotation of the rotating shaft (10) drives the tested tire (9) to rotate; the rotating shaft is connected with the rotary encoder (13) through the connecting device (12), the rotary encoder (13) and the rotating shaft (10) rotate synchronously in the process that the rotating shaft drives the tested tire (9) to rotate, and the rotary encoder (13) generates trigger pulses to be conveyed to each line laser sensor (5) to realize external trigger synchronous sampling.
As shown in FIG. 2, when a certain type of tire (9) is measured, the measuring device is in a first measuring attitude. When tires (9) of different models are switched, the measured profile (8) may exceed the sensor measuring area (7) due to the change of tire size. At the moment, the measured profile (8) is positioned in the measuring area (7) again, namely in the position of the measuring posture II, by adjusting the angles of the position of the vertical lifting platform (2) and the two side rotary tables (4), so that the measuring requirement of the current tire (9) is met. The similar measuring device can meet the measuring requirements of tires of various models on the same production line.
As shown in fig. 3, in the measurement process, after coordinate registration, three line laser sensors (5) are in a uniform coordinate system, and the measuring beams (6) are located in the same plane, the measuring section (7) in a single measurement obtains a measuring profile (8) on the surface of the measured tire (9). With the rotation of the tested tire (9), profile data under different angles can be acquired. After the tested tire (9) rotates for one circle, the appearance of the whole tire can be obtained.
Example (b): alternative structural representation of the device
Fig. 4 (a) is a three-dimensional structural view of another implementation of the device of the present invention, and fig. 4 (b) is an enlarged view of the measuring device. The U-shaped beam (1) is installed on the bottom plate through a support, the tripod (16) is installed on the U-shaped beam (1), and the damping table (17) is installed on the tripod to eliminate the influence of vibration of workshop equipment. The damping table (17) is provided with a lifting table (2), and the table surface of the lifting table (2) is provided with an expansion plate (3). A linear laser sensor (5) is fixed in the middle of the bottom of the expansion plate (3), and two rotary tables (4) are respectively installed on two sides of the expansion plate. The rotary tables are respectively provided with a line laser sensor (5) through a switching structure (18). The three line laser sensors (5) all emit measuring beams (6) downwards, and a measured profile (8) is obtained on a tire (9) fixed on a rotating shaft (10). The rotating shaft (10) is fixed on the base (14) through the brackets (11) at the two sides. The rotating shaft (10) drives the tire (9) to rotate so as to obtain tire profiles (8) at different angles, and finally the tire appearance is obtained.
The rotating shaft (10) is arranged on the bottom plate (14) through a bracket (11); the position of the bracket (11) can be outside the bracket corresponding to the U-shaped cross beam (as shown in figure 4) or inside the bracket (as shown in figure 1). The tested tire (9) is fixedly arranged on the rotating shaft (10), and the rotation of the rotating shaft (10) drives the tested tire (9) to rotate; the rotating shaft is connected with the rotary encoder (13) through the connecting device (12), the rotary encoder (13) and the rotating shaft (10) rotate synchronously in the process that the rotating shaft drives the tested tire (9) to rotate, and the rotary encoder (13) generates trigger pulses to be conveyed to each line laser sensor (5) to realize external trigger synchronous sampling.
Claims (5)
1. A device for measuring the appearance of a tire by a plurality of line laser sensors is characterized by comprising a horizontal cross beam (1), a vertical lifting platform (2), an expansion plate (3), an electric rotary table (4), a line laser sensor (5), a measuring beam (6), a rotating shaft (10), a support (11), a connecting device (12), a rotary encoder (13) and a bottom plate (14);
the horizontal beam (1) is fixed on the bottom plate (14) through an outer support, a vertical lifting platform (2) is arranged in the middle of the horizontal beam (1), an expansion plate (3) is arranged on the vertical lifting platform (2), and two sides of the expansion plate (3) are respectively provided with an electric turntable (4); the middle part of the lower end of the expansion plate (3) and the electric turntables (4) at two sides are respectively provided with a line laser sensor (5), and the line laser sensors at two sides are correspondingly arranged on the electric turntables (4) at two sides; the line laser sensor (5) emits a fan-shaped measuring beam (6) downwards;
the rotating shaft (10) is arranged on the bottom plate (14) through a bracket (11); the tested tire (9) is fixedly arranged on the rotating shaft (10), and the rotation of the rotating shaft (10) drives the tested tire (9) to rotate; the rotating shaft is connected with the rotary encoder (13) through the connecting device (12), the rotary encoder (13) and the rotating shaft (10) rotate synchronously in the process that the rotating shaft drives the tested tire (9) to rotate, and the rotary encoder (13) generates trigger pulses to be conveyed to each line laser sensor (5) to realize external trigger synchronous sampling.
2. The device for measuring the tire topography by a plurality of line laser sensors as claimed in claim 1, wherein the height of the support (11) is greater than the radius of the tire (9) to be measured, so as to ensure that the tire (9) to be measured does not contact the ground.
3. The device for measuring the tire morphology by a plurality of line laser sensors according to claim 1 or 2, characterized in that the line laser sensor (5) located in the middle of the lower end of the expansion plate (3) is fixed, and the line laser sensors (5) on both sides can be driven to rotate by the electric turntable (4).
4. The device for measuring the tire morphology by a plurality of line laser sensors is characterized in that the measured profile (8) of the measured tire (9) is positioned in the detection area (7) by adjusting the height of the vertical lifting platform (2) and the angles of the electric rotary tables (4) at the left side and the right side; at the moment, the line laser sensor (5) can collect a series of point positions of the laser beam irradiated on the position of the tested tire (9) along the section line of the tire.
5. The apparatus for measuring the tire topography by multiple line laser sensors according to claim 4, wherein the extension plate (3) is in a hanger configuration and is symmetrical from side to side.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202020688029.4U CN212254024U (en) | 2020-04-29 | 2020-04-29 | Device for measuring tire morphology by multiple line laser sensors |
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| Application Number | Priority Date | Filing Date | Title |
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| CN202020688029.4U CN212254024U (en) | 2020-04-29 | 2020-04-29 | Device for measuring tire morphology by multiple line laser sensors |
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018174A (en) * | 2021-11-05 | 2022-02-08 | 上海科技大学 | Complex curved surface profile measuring system |
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2020
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Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN114018174A (en) * | 2021-11-05 | 2022-02-08 | 上海科技大学 | Complex curved surface profile measuring system |
| CN114018174B (en) * | 2021-11-05 | 2023-08-22 | 上海科技大学 | Complex curved surface contour measuring system |
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