CN113819858A - Detection device and method for electric scooter hub - Google Patents
Detection device and method for electric scooter hub Download PDFInfo
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- CN113819858A CN113819858A CN202111397904.9A CN202111397904A CN113819858A CN 113819858 A CN113819858 A CN 113819858A CN 202111397904 A CN202111397904 A CN 202111397904A CN 113819858 A CN113819858 A CN 113819858A
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- G—PHYSICS
- G01—MEASURING; TESTING
- G01B—MEASURING LENGTH, THICKNESS OR SIMILAR LINEAR DIMENSIONS; MEASURING ANGLES; MEASURING AREAS; MEASURING IRREGULARITIES OF SURFACES OR CONTOURS
- G01B11/00—Measuring arrangements characterised by the use of optical techniques
- G01B11/24—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures
- G01B11/2408—Measuring arrangements characterised by the use of optical techniques for measuring contours or curvatures for measuring roundness
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Abstract
The invention discloses a device and a method for detecting a hub of an electric scooter, relating to the technical field of hub detection, and the technical scheme is characterized by comprising the following steps: a placing table for placing the hub; the fixing piece is positioned above the placing table and used for fixing the hub of the electric scooter; the method comprises the steps of placing a wheel hub above a placing table, adjusting the position of a radiation lamp through the position of a limiting plate, enabling the radiation lamp to irradiate the wheel hub to be coincident with the center of the wheel hub, intercepting a fixed wheel hub top view by a camera, acquiring three different points a, b and c on the outer side surface of the wheel hub by using a first image acquisition unit, determining the center of a circle where the three points are located according to the three points, constructing the center of the circle and the center of the circle irradiated by the radiation lamp on the wheel hub into a circle with the radius of R, and comparing the coincidence degree between the two circles with the radius of R, wherein if the coincidence degree is within the range of S, the roundness of the outer side surface of the wheel hub meets the requirement, otherwise, the coincidence degree does not meet the requirement.
Description
Technical Field
The invention relates to the technical field of hub detection, in particular to a device and a method for detecting a hub of an electric scooter.
Background
Along with the continuous development of society, economic level's continuous improvement, people pay more attention to green trip, because electric scooter uses the electric energy, friendly to the environment, the convenience of charging, wait some advantages such as electric time length, it becomes the first choice of people's short distance trip, electric scooter wheel hub is that the cask shape, the epaxial metal part of centre dress of scooter tire inner contour support tire.
At present, the electric scooter wheel hub detection device on the market needs to detect the arc degree of the outer side of a wheel hub, the wheel hub is easy to deform in the production process, so that the wheel hub which is produced needs to be detected, the wheel hub is determined not to deform in the production process, and the safety of a scooter on quality is ensured.
Disclosure of Invention
Aiming at the defects in the prior art, the invention aims to provide a device and a method for detecting a hub of an electric scooter, which have high detection efficiency.
In order to achieve the purpose, the invention provides the following technical scheme: a detection device and a method for a hub of an electric scooter comprise:
a placing table for placing the hub;
the fixing piece is positioned above the placing table and used for fixing the hub of the electric scooter;
the sampling piece is positioned above the fixing piece and used for acquiring a top view picture of the hub of the electric scooter;
the irradiation piece is positioned above the fixing piece and aligned with the center of the electric scooter wheel hub to form an irradiation point;
the first image acquisition unit is connected with the irradiation piece and is used for acquiring three different points a, b and c on the outer side surface of the hub on the picture;
and the image processing unit is positioned in the first image acquisition unit and used for determining the positions of the centers of the circles of the three points a, b and c according to the positions of the three points a, b and c, and comparing the position of the center of the circle with the position of the irradiation point after the position of the center of the circle is determined.
Preferably, the mounting includes first splint and second splint, the structure size of first splint and second splint is the same, the quantity of first splint and second splint is two, and the line vertical distribution at two first splint and two second splint centers, the region that first splint and second splint enclose is the square, the bottom of first splint and second splint all is equipped with protrudingly, and the width of jut is less than the width of first splint and second splint, place the top of a intracavity and offer the gliding sliding opening of confession first splint and second splint bottom jut, and place the gliding first driving piece of drive first splint and second splint bottom jut along sliding opening department on the bench.
Preferably, the first driving part comprises two vertically distributed screw rods, the two screw rods are movably connected with an inner cavity of the placing table, the two first clamping plates are symmetrically distributed at the left end and the right end of one of the screw rods, the two second clamping plates are symmetrically distributed at the left end and the right end of the other screw rod, the rotating directions of threads at the left end and the right end of the two screw rods are opposite, the first clamping plate and the second clamping plate which are positioned on the same screw rod are respectively in threaded connection with the screw rods, and the placing table is provided with a second driving part which drives the two screw rods to rotate simultaneously.
Preferably, the second driving piece comprises bevel gears, the number of the bevel gears is two, the gear faces of the two bevel gears are perpendicular to each other, the two bevel gears are meshed with each other, the two bevel gears are respectively and fixedly sleeved on the peripheries of the two screws, and one end of one screw extends out of the placing table.
Preferably, the irradiation part is a radiation lamp, a fixed table is arranged on the outer side of the placing table, the placing table is connected with the fixed table through a connecting piece, a hydraulic cylinder fixedly connected with mounting rack is arranged at the top of the fixed table, the mounting rack is of an L-shaped structure, the radiation lamp is fixedly mounted on the mounting rack, two parallel connecting plates are fixedly mounted at the top of the mounting rack, a limiting plate is arranged between the two connecting plates, one end of the limiting plate is located between the two connecting plates, one side of the limiting plate, which is close to the connecting plate, is movably connected with the connecting plates through a rolling shaft, when the axial direction of the limiting plate is perpendicular to the table top of the fixed table, the intersecting point of the vertical central line of the square area formed by the plane at the bottom of the limiting plate and the first clamping plate and the second clamping plate is marked as A, the intersecting point of the radiation lamp and the plane at the bottom of the limiting plate is marked as B, and the coinciding point of the B.
Preferably, the sampling member comprises a camera which is fixedly arranged on the top of the mounting frame, and the central line of the camera is coincident with the vertical central line of a square area enclosed by the first clamping plate and the second clamping plate.
Preferably, the top of each of the camera and the lamp is fixedly provided with a fixing pin, and the fixing pin is in threaded connection with the mounting frame through a bolt.
Preferably, the top of fixed station is equipped with the circularity measuring apparatu, is equipped with the instrument on the circularity measuring apparatu, and the circularity measuring apparatu is connected with the regulating part of adjusting the interval between circularity measuring apparatu and the second splint, and the connecting piece includes the motor, and the standing groove has been seted up at the top of fixed station, and motor fixed mounting is at the tank bottom of standing groove, the output shaft of motor and the bottom fixed connection of standing station, and the top of standing station and the top of fixed station are in the coplanar.
Preferably, the adjusting part comprises an electric push rod, a vertical plate is fixedly mounted on one side, away from the positions of the first clamping plate and the second clamping plate, of the top of the fixing table, the electric push rod is fixedly mounted on the vertical plate, and the roundness measuring instrument and the electric push rod are fixedly connected with one end, away from the position of the vertical plate, of the electric push rod.
A detection method of an electric scooter hub is applied to the detection device of the electric scooter hub and comprises the following steps,
s1, fixing the hub above the placing table by using a fixing piece;
s2, adjusting the position of the irradiation piece to make the irradiation piece align with the center of the electric scooter hub to form an irradiation point;
s3, acquiring a top view picture of the hub by using the sampling piece;
s4, acquiring three different points a, b and c on the outer side surface of the hub by using a first image acquisition unit;
s5, establishing a plane coordinate system, and determining the positions of the centers of the three points a, b and c by the control element according to the positions of the three points a, b and c;
and S6, obtaining the position of the irradiation point on the top view picture of the hub, comparing the position of the irradiation point with the position of the obtained circle center, and judging whether the roundness of the hub meets the requirement.
Compared with the prior art, the invention has the following beneficial effects:
1. according to the invention, the hub is placed above the placing table, the height of the irradiation lamp is adjusted through the position of the limiting plate, so that the point irradiated on the hub by the irradiation lamp is coincided with the center of the hub, the camera intercepts the fixed top view of the hub, three different points a, b and c on the outer side surface of the hub are obtained through the first image acquisition unit, the center of a circle where the three points are located is determined according to the three points, the center of the circle and the center of the circle irradiated on the hub by the irradiation lamp are both constructed into a circle with the radius of R, and by comparing the coincidence degree between the two circles with the radius of R, if the coincidence degree is in the range of S, the roundness of the outer side surface of the hub meets the requirement, otherwise, the measurement mode is convenient and the time is saved.
2. The motor is used for driving the hub to rotate, and the roundness of the outer side surface of the hub is judged to meet the requirement by observing the indication number of the instrument on the roundness measuring instrument, so that double detection is realized, and the precision of the experimental result is enhanced.
Drawings
FIG. 1 is a schematic illustration of a method according to an embodiment of the present invention;
FIG. 2 is a schematic structural diagram of a roundness measuring instrument according to an embodiment of the present invention;
fig. 3 is a top view of a screw structure according to an embodiment of the present invention.
1. A fixed table; 2. a vertical plate; 3. an electric push rod; 4. a roundness measuring instrument; 5. a meter; 6. illuminating a lamp; 7. a camera; 8. a mounting frame; 9. a first splint; 10. a motor; 11. a second splint; 12. a placing table; 13. a screw; 14. a bevel gear; 15. a hydraulic cylinder; 16. and a limiting plate.
Detailed Description
Embodiments of a detecting apparatus and a method for an electric scooter hub according to the present invention will be further described with reference to fig. 1 to 3.
Referring to fig. 1 and 2, a detecting apparatus of a hub of an electric scooter, comprising:
a placing table 12 for placing the hub;
a fixing member located above the placement table 12 for fixing the electric scooter hub;
the sampling piece is positioned above the fixing piece and used for acquiring a top view picture of the hub of the electric scooter;
the irradiation piece is positioned above the fixing piece and aligned with the center of the electric scooter wheel hub to form an irradiation point;
the first image acquisition unit is connected with the irradiation piece and is used for acquiring three different points a, b and c on the outer side surface of the hub on the picture;
and the image processing unit is positioned in the first image acquisition unit and used for determining the positions of the centers of the circles of the three points a, b and c according to the positions of the three points a, b and c, and comparing the position of the center of the circle with the position of the irradiation point after the position of the center of the circle is determined. The first image acquisition unit and the image processing unit both utilize the prior art and equipment to place the electric scooter wheel hub to be measured above the placing table 12, utilize the fixing piece to fix the wheel hub above the placing table 12, the fixed wheel hub center coincides with the irradiation point, utilize the sampling piece to acquire the top view picture of the electric scooter wheel hub, the obtained picture has the position information of the irradiation point, utilize the first image acquisition unit to acquire three points a, b, c different on the outer side surface of the wheel hub on the picture, utilize the control piece to establish a plane coordinate system, determine the positions of the centers of the circles of the three points a, b, c according to the positions of the three points a, b, c, after the position of the center of the circle is determined, compare the position of the center of the circle with the position of the irradiation point, if the position of the center of the circle coincides with the position of the irradiation point, the roundness of the outer side surface of the hub meets the requirement.
Referring to fig. 2 and 3, the fixing member includes a first clamping plate 9 and a second clamping plate 11, the first clamping plate 9 and the second clamping plate 11 have the same structure size, the number of the first clamping plate 9 and the second clamping plate 11 is two, the connecting line between the centers of the two first clamping plate 9 and the two second clamping plate 11 is vertically distributed, the area enclosed by the first clamping plate 9 and the second clamping plate 11 is square, the bottoms of the first clamping plate 9 and the second clamping plate 11 are both provided with protrusions, the width of each protrusion is smaller than that of the first clamping plate 9 and the second clamping plate 11, the top of the inner cavity of the placing table 12 is provided with a sliding opening for sliding the protrusions at the bottoms of the first clamping plate 9 and the second clamping plate 11, and the placing table 12 is provided with a first driving member for driving the protrusions at the bottoms of the first clamping plate 9 and the second clamping plate 11 to slide along the sliding opening. The electric scooter wheel hub is placed on the placing table 12, the wheel hub is located in a square area formed by enclosing of the first clamping plate 9 and the second clamping plate 11, the first clamping plate 9 and the second clamping plate 11 are driven by the first driving piece to slide along the position of a sliding opening in the top of the placing table 12, finally the wheel hub is clamped by the first clamping plate 9 and the second clamping plate 11, and the first clamping plate 9 and the second clamping plate 11 move towards the direction of the square center formed by enclosing of the first clamping plate 9 and the second clamping plate 11 at the same time, so that the fixed wheel hub center of the scooter is enabled to coincide with the square center formed by enclosing of the first clamping plate 9 and the second clamping plate 11, and the wheel hub center can be enabled to coincide with the position of an irradiation point.
Referring to fig. 2 and 3, the first driving member includes two screws 13 vertically distributed, the two screws 13 are movably connected to an inner cavity of the placing table 12, the two first clamping plates 9 are symmetrically distributed at left and right ends of one of the screws 13, the two second clamping plates 11 are symmetrically distributed at left and right ends of the other screw 13, the rotation directions of the threads at the left and right ends of the two screws 13 are opposite, the first clamping plate 9 and the second clamping plate 11 located on the same screw 13 are respectively in threaded connection with the screws 13, and the placing table 12 is provided with a second driving member for driving the two screws 13 to rotate simultaneously. The two screws 13 are driven by the second driving member to rotate simultaneously, and at this time, the first clamping plate 9 and the second clamping plate 11 in threaded connection with the two screws 13 slide along the axial direction of the screws 13 respectively, and finally the first clamping plate 9 and the second clamping plate 11 clamp the hub of the electric scooter.
Referring to fig. 2 and 3, the second driving member includes two bevel gears 14, the number of the bevel gears 14 is two, the gear surfaces of the two bevel gears 14 are perpendicular to each other, the two bevel gears 14 are engaged with each other, the two bevel gears 14 are fixedly sleeved on the peripheries of the two screws 13, respectively, and one end of one screw 13 extends out of the placing table 12. One of the screw rods 13 is rotated to drive the bevel gears 14 fixedly sleeved with the screw rods 13 to rotate, and since the two bevel gears 14 are meshed, the two bevel gears 14 rotate simultaneously, the two screw rods 13 rotate simultaneously, and the distance of the first clamping plate 9 and the distance of the second clamping plate 11 moving along the sliding opening are ensured to be the same.
Referring to fig. 2 and 3, the irradiation part is a radiation lamp 6, a fixed table 1 is arranged on the outer side of a placing table 12, the placing table 12 is connected with the fixed table 1 through a connecting piece, the top of the fixed table 1 is fixedly connected with an installation frame 8 through a hydraulic cylinder 15, the installation frame 8 is of an L-shaped structure, the radiation lamp 6 is fixedly installed on the installation frame 8, two parallel connection plates are fixedly installed on the top of the installation frame 8, a limit plate 16 is arranged between the two connection plates, one end of the limit plate 16 is located between the two connection plates, one side, close to the connection plate, of the limit plate 16 is movably connected with the connection plates through a roller, when the axial direction of the limit plate 16 is perpendicular to the table top of the fixed table 1, a point where the bottom plane of the limit plate 16 intersects with the vertical center line of a square area enclosed by a first clamping plate 9 and a second clamping plate 11 is marked as a point a, and a point where the bottom plane of the radiation lamp 6 intersects with the bottom plane of the limit plate 16 is marked as B, the point A coincides with the point B. The irradiation lamp 6 irradiates on the placing table 12, after the hub is fixed, the limiting plate 16 is rotated, the axial direction of the limiting plate 16 is perpendicular to the upper surface of the hub, the hydraulic cylinder 15 is driven to shrink and stretch to adjust the height of the irradiation lamp 6, finally the bottom of the limiting plate 16 is attached to the top of the hub, and the point formed by irradiation of the irradiation lamp 6 on the hub is just the point where the center of the hub is located, so that the detection precision is guaranteed.
Referring to fig. 2 and 3, the sampling member comprises a camera 7, the camera 7 is fixedly arranged on the top of the mounting frame 8, and the central line of the camera 7 is coincident with the vertical central line of a square area enclosed by the first clamping plate 9 and the second clamping plate 11. The camera 7 is used for obtaining the top view of the fixed electric scooter hub, the central line where the camera of the camera 7 is located coincides with the vertical central line of a square area formed by the first clamping plate 9 and the second clamping plate 11, and therefore the angle of a hub picture shot by the camera 7 is ensured to be right above the hub, and deviation cannot occur.
Referring to fig. 2 and 3, a fixing pin is fixedly mounted on the top of each of the camera 7 and the lamp 6, and the fixing pin is in threaded connection with the mounting bracket 8 through a bolt. Utilize bolted connection's mode to fix camera 7 and lamp 6, be convenient for install and dismantle camera 7 and lamp 6, it is very convenient.
See fig. 2 and fig. 3, the top of fixed station 1 is equipped with roundness measuring instrument 4, be equipped with instrument 5 on roundness measuring instrument 4, roundness measuring instrument 4 is connected with the regulating part of adjusting the interval between roundness measuring instrument 4 and the second splint 11, the connecting piece includes motor 10, the standing groove has been seted up at the top of fixed station 1, motor 10 fixed mounting is at the tank bottom of standing groove, motor 10's output shaft and the bottom fixed connection of standing station 12, the top of standing station 12 and the top of fixed station 1 are in the coplanar. The electric scooter wheel hub is fixed in the top of placing platform 12, after wheel hub is fixed firm, utilize the regulating part to adjust the distance between measurement department and the wheel hub periphery on the roundness measuring apparatu 4, when the two is in the measuring distance within range, starter motor 10 observes the registration of instrument 5 on the roundness measuring apparatu 4 for whether the peripheral arc of inspection wheel hub meets the requirements, dual detection, reinforcing measuring result's the degree of accuracy, and here need not the manual work and rotate wheel hub, use manpower sparingly greatly, save time.
Referring to fig. 2 and 3, the adjusting part comprises an electric push rod 3, a vertical plate 2 is fixedly mounted on one side, away from the first clamping plate 9 and the second clamping plate 11, of the top of the fixing table 1, the electric push rod 3 is fixedly mounted on the vertical plate 2, and the roundness measuring instrument 4 is fixedly connected with one end, away from the vertical plate 2, of the electric push rod 3. The electric push rod 3 is used for contraction and stretching, so that the distance between the roundness measuring instrument 4 and the hub is adjusted.
Referring to fig. 1 and 2, a method for detecting a hub of an electric scooter, to which the above-mentioned detection apparatus for a hub of an electric scooter is applied, includes the steps of:
s1, fixing the hub above the placing table 12 by using the fixing member;
s2, adjusting the position of the irradiation piece to make the irradiation piece align with the center of the electric scooter hub to form an irradiation point;
s3, acquiring a top view picture of the hub by using the sampling piece;
s4, acquiring three different points a, b and c on the outer side surface of the hub by using a first image acquisition unit;
s5, establishing a plane coordinate system, and determining the positions of the centers of the three points a, b and c by the control element according to the positions of the three points a, b and c;
and S6, obtaining the position of the irradiation point on the top view picture of the hub, comparing the position of the irradiation point with the position of the obtained circle center, and judging whether the roundness of the hub meets the requirement.
And if the position of the irradiation point is superposed with the position of the obtained circle center, the roundness of the wheel hub meets the requirement.
The second image acquisition unit acquires other three points d, e and f on the outer side surface of the hub, which are different from the three points a, b and c, on the top view picture;
the measuring piece has two purposes, one of which is used for calculating the distances between the centers of the three points d, e and f and the centers of the three points a, b and c, and the other of which is used for calculating the distances between the centers of the three points a, b and c and the centers of the three points a, b and c;
and the data processing unit is used for comparing the six values measured by the measuring piece to see whether the difference of the data is within the error range.
If the difference of the data of the six numerical values is within the error range, the roundness of the outer side of the hub of the electric scooter is in accordance with the requirement, and the accuracy of the measuring result is enhanced.
The modeling module is used for constructing a radiation point formed by the radiation lamp 6 on a picture into a circle with the radius of R, constructing six different points of a, b, c, d, e and f into a circle with the radius of R, and marking the center of the circle obtained by the three points of a, b and c as O;
when the circle center O is compared with the irradiation point, the contact ratio of the two circles with the radius of R is seen, a contact ratio range S is set, the contact ratio is within the range S, the arc degree of the outer side of the hub meets the standard, and otherwise, the arc degree does not meet the standard.
The intercepted six different points a, b, c, d, e and f and the irradiation point of the irradiation lamp 6 have certain sizes, all the points are constructed into a circle with the radius of R, whether the arc degree of the outer side of the hub meets the standard is judged by observing the coincidence ratio of the circle center O where the points a, b and c are located and the irradiation point, the arc degree meets the standard within the range of the coincidence ratio S, otherwise, the arc degree does not meet the standard, when the distances between the three points d, e and f and the circle center O of the three points a, b and c are calculated, the three points d, e and f are also constructed into a circle with the radius of R, and therefore, the accuracy is higher when the distance between the points and the point is measured.
The working principle is as follows: the wheel hub of the electric scooter needing to be measured is placed above a placing table 12, the wheel hub is positioned in a square area formed by enclosing a first clamping plate 9 and a second clamping plate 11 at the moment, a screw 13 extending out of the placing table 12 rotates, a bevel gear 14 fixedly sleeved with the screw 13 rotates, because the two bevel gears 14 are meshed, the two screw 13 simultaneously rotate, the first clamping plate 9 and the second clamping plate 11 in threaded connection with the two screw 13 respectively slide along the axial direction of the screw 13, finally the first clamping plate 9 and the second clamping plate 11 clamp the wheel hub of the electric scooter, the circle center of the wheel hub is superposed with the square center formed by enclosing the first clamping plate 9 and the second clamping plate 11, an irradiation lamp 6 is over against the circle center of the wheel hub, a camera 7 is over against the wheel hub, the top view of the wheel hub is shot by the camera 7, a top view picture of the wheel hub is obtained, a first image acquisition unit is utilized, acquiring three different points a, b and c on the outer side surface of a hub on a picture, establishing a plane coordinate system by using a control piece, determining the positions of circle centers O of the three points a, b and c according to the positions of the three points a, b and c, constructing the circle centers O of the circle centers O and a radiation point formed by a radiation lamp 6 in the circle center of the hub into a circle with the radius R by using a building module, judging the coincidence degree between the two circles, if the coincidence degree is in the range S, enabling the roundness of the outer side surface of the hub to meet the requirement, otherwise, not meeting the requirement, enhancing the precision of a measurement result, adjusting the distance between a roundness measuring instrument 4 and the outer side surface of the hub by using a push rod 3 to contract and stretch until the wheel hub is in the measurement range of the roundness measuring instrument 4, starting a motor 10, driving the hub to rotate by using the motor 10, and observing the indication number of an instrument 5 on the roundness measuring instrument 4 to check whether the peripheral arc of the hub meets the requirement or not, the method comprises the steps of double detection, enhancing the accuracy of a measurement result, obtaining other three points d, e and f, different from three points a, b and c, on the outer side face of the hub on a top view picture by using a second image obtaining unit, forming the three points d, e and f into a circle with the radius of R by using a building module, calculating the distance between the three points d, e and f and the circle center O of the three points a, b and c by using the measuring module, calculating the distance between the circle center O of the three points a, b and c and the three points a, b and c respectively, and judging whether the difference between the obtained six numerical values is in an error range, wherein in the error range, the peripheral arc of the hub meets the requirement, otherwise, a detection method is added, and the accuracy of the result is enhanced.
The above description is only a preferred embodiment of the present invention, and the protection scope of the present invention is not limited to the above embodiments, and all technical solutions belonging to the idea of the present invention belong to the protection scope of the present invention. It should be noted that modifications and embellishments within the scope of the invention may occur to those skilled in the art without departing from the principle of the invention, and are considered to be within the scope of the invention.
Claims (10)
1. A detection device for a hub of an electric scooter is characterized in that: the method comprises the following steps:
a placing table (12) for placing the hub;
a fixing member located above the placing table (12) and used for fixing the hub of the electric scooter;
the sampling piece is positioned above the fixing piece and used for acquiring a top view picture of the hub of the electric scooter;
the irradiation piece is positioned above the fixing piece and aligned with the center of the electric scooter wheel hub to form an irradiation point;
the first image acquisition unit is connected with the irradiation piece and is used for acquiring three different points a, b and c on the outer side surface of the hub on the picture;
and the image processing unit is positioned in the first image acquisition unit and used for determining the positions of the centers of the circles of the three points a, b and c according to the positions of the three points a, b and c, and comparing the position of the center of the circle with the position of the irradiation point after the position of the center of the circle is determined.
2. The inspection apparatus for an electric scooter hub according to claim 1, wherein: the fixing piece comprises a first clamping plate (9) and a second clamping plate (11), the first clamping plate (9) and the second clamping plate (11) have the same structure size, the number of the first clamping plate (9) and the second clamping plate (11) is two, the connecting line of the centers of the two first clamping plates (9) and the two second clamping plates (11) is vertically distributed, the area enclosed by the first clamping plates (9) and the second clamping plates (11) is square, the bottoms of the first clamping plates (9) and the second clamping plates (11) are both provided with bulges, the width of the protruding part is less than the width of the first clamping plate (9) and the second clamping plate (11), the top of the inner cavity of the placing table (12) is provided with a sliding opening for the protruding part at the bottom of the first clamping plate (9) and the second clamping plate (11) to slide, and a first driving piece for driving the bottom protruding parts of the first clamping plate (9) and the second clamping plate (11) to slide along the sliding opening is arranged on the placing table (12).
3. The inspection apparatus for a hub of an electric scooter according to claim 2, wherein: first driving piece includes two vertical distribution's screw rod (13), two screw rods (13) all with place the inner chamber swing joint of platform (12), both ends about one of them screw rod (13) are distributed to two first splint (9) symmetry, both ends about two second splint (11) symmetric distribution are at another screw rod (13), and the rotation direction of both ends screw thread is opposite about two screw rods (13), first splint (9) and second splint (11) that are located on same screw rod (13) respectively with screw rod (13) threaded connection, it is equipped with the second driving piece that drives two screw rods (13) simultaneous rotations on platform (12) to place.
4. The inspection apparatus for a hub of an electric scooter according to claim 3, wherein: the second driving piece comprises bevel gears (14), the number of the bevel gears (14) is two, the gear faces of the two bevel gears (14) are perpendicular to each other, the two bevel gears (14) are meshed with each other, the two bevel gears (14) are respectively fixedly sleeved on the peripheries of the two screw rods (13), and one end of one screw rod (13) extends out of the outer portion of the placing table (12).
5. The inspection apparatus for a hub of an electric scooter according to claim 2, wherein: the irradiation part is a lamp (6), a fixed table (1) is arranged on the outer side of the placing table (12), the placing table (12) is connected with the fixed table (1) through a connecting piece, the top of the fixed table (1) is fixedly connected with an installation frame (8) through a hydraulic cylinder (15), the installation frame (8) is of an L-shaped structure, the lamp (6) is fixedly installed on the installation frame (8), two parallel connection plates are fixedly installed on the top of the installation frame (8), a limiting plate (16) is arranged between the two connection plates, one end of the limiting plate (16) is located between the two connection plates, one side, close to the connection plates, of the limiting plate (16) is movably connected with the connection plates through a rolling shaft, when the axial direction of the limiting plate (16) is perpendicular to the table surface of the fixed table (1), the intersection point of the vertical central line of a square area formed by the plane of the bottom of the limiting plate (16) and the first clamping plate (9) and the second clamping plate (11) in a surrounding mode is marked as A, the point where the irradiating lamp (6) is intersected with the bottom plane of the limiting plate (16) is marked as B, and the point A is superposed with the point B.
6. The apparatus for inspecting a hub of an electric scooter according to claim 5, wherein: the sampling piece comprises a camera (7), the camera (7) is fixedly installed at the top of the mounting frame (8), and the center line of the camera (7) is overlapped with the vertical center line of a square area surrounded by the first clamping plate (9) and the second clamping plate (11).
7. The apparatus for inspecting a hub of an electric scooter according to claim 6, wherein: the top parts of the camera (7) and the irradiation lamp (6) are fixedly provided with fixing pins, and the fixing pins are in threaded connection with the mounting rack (8) through bolts.
8. The apparatus for inspecting a hub of an electric scooter according to claim 5, wherein: the top of fixed station (1) is equipped with roundness measuring instrument (4), be equipped with instrument (5) on roundness measuring instrument (4), roundness measuring instrument (4) are connected with the regulating part of adjusting interval between roundness measuring instrument (4) and second splint (11), the connecting piece includes motor (10), the standing groove has been seted up at the top of fixed station (1), motor (10) fixed mounting is at the tank bottom of standing groove, the output shaft of motor (10) and the bottom fixed connection of placing platform (12), the top of placing platform (12) and the top of fixed station (1) are in the coplanar.
9. The apparatus for inspecting a hub of an electric scooter according to claim 8, wherein: the adjusting part comprises an electric push rod (3), a vertical plate (2) is fixedly mounted on one side, where the top of the fixing table (1) is far away from the first clamping plate (9) and the second clamping plate (11), the electric push rod (3) is fixedly mounted on the vertical plate (2), and the roundness measuring instrument (4) is fixedly connected with one end, where the electric push rod (3) is far away from the vertical plate (2).
10. A method for inspecting a hub of an electric scooter to which the apparatus for inspecting a hub of an electric scooter of any one of claims 1 to 7 is applied, comprising the steps of:
s1, fixing the hub above the placing table (12) by using a fixing piece;
s2, adjusting the position of the irradiation piece to make the irradiation piece align with the center of the electric scooter hub to form an irradiation point;
s3, acquiring a top view picture of the hub by using the sampling piece;
s4, acquiring three different points a, b and c on the outer side surface of the hub by using a first image acquisition unit;
s5, establishing a plane coordinate system, and determining the positions of the centers of the three points a, b and c by the control element according to the positions of the three points a, b and c;
and S6, obtaining the position of the irradiation point on the top view picture of the hub, comparing the position of the irradiation point with the position of the obtained circle center, and judging whether the roundness of the hub meets the requirement.
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| CN202111397904.9A CN113819858B (en) | 2021-11-24 | 2021-11-24 | Detection device and method for electric scooter hub |
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| CN113819858B (en) | 2022-03-08 |
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