Wheel photographing and measuring device of non-contact four-wheel aligner
By using the wheel imaging and measurement device of the non-contact four-wheel alignment instrument, and utilizing stereo imaging and image processing technology, the problems of mechanical errors and fixture damage in the existing technology are solved, and high-precision and fast wheel alignment measurement is achieved.
Patent Information
- Application Number
- CN202423292336.8
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-12-31
- Publication Date
- 2025-11-25
- Estimated Expiration
- 2034-12-31
AI Technical Summary
Existing automotive four-wheel alignment machines suffer from mechanical errors and wheel damage caused by fixtures during the measurement process. Furthermore, the accuracy and speed of non-contact measurement technology are insufficient, especially affecting the adjustment accuracy in measuring wheel rim deviation.
The wheel imaging measurement device using a non-contact four-wheel alignment instrument utilizes stereo imaging technology and image processing methods. Through a measurement unit composed of a camera and an infrared laser, it achieves non-contact measurement of the wheels. Combined with a target and a fixed bracket, it performs position correction, thereby improving measurement accuracy and speed.
It enables non-contact measurement without clamps, improving the speed and accuracy of wheel positioning, avoiding mechanical errors and wheel damage, and simplifying the operation process.
Smart Images
Figure CN223597226U_ABST
Abstract
Description
TECHNICAL FIELD
[0001] The utility model relates to automobile four -wheel detection technical field, concretely is the wheel photographing measurement device of non -contact four -wheel positioning appearance. BACKGROUND
[0002] Automobile four -wheel positioning is indispensable in the automobile detection and maintenance industry, and the accuracy of detection affects the safety of automobile use. Four -wheel positioning detection technology has experienced wire type, laser type, CCD and 3D four -wheel positioning, and has greatly improved in precision. At present, the most used is 3D four -wheel positioning appearance, and auxiliary equipment such as fixture and target plate is used in the operation process, the positioning parameters of wheel are indirectly measured through fixture, and mechanical error is easy to produce. Moreover, fixture can cause different degrees of damage to wheel and hub. Due to the deformation of rim, measurement error is caused, and compensation is needed, so that the operation process is more troublesome. The precision and speed of the existing non -contact measurement technology cannot meet the measurement demand of automobile wheel positioning appearance at present, especially the measurement of rim deviation affects the final adjustment precision. CONTENT OF UTILITY MODEL
[0003] In order to solve the above problems, that is, to solve the problems in the above background technology, the utility model provides a wheel photographing measurement device of non -contact four -wheel positioning appearance, which comprises a reference optical axis, the reference optical axis is installed with a camera fixing seat through a camera fixing seat installation screw, the reference optical axis is installed with an upper fixed support and a lower fixed support through a fixed frame locking screw, the front of the camera fixing seat is installed with a camera, a light -proof cylinder and an exposure lamp plate in sequence through a screw, and the rear of the camera fixing seat is fixed with a CPU circuit board through a screw.
[0004] The front of the upper fixed support and the lower fixed support is installed with a target installation support through a target installation support screw, the front of the target installation support is installed with a plurality of targets through a target installation screw, and the reference optical axis is installed with a plurality of measurement units through a laser base installation screw.
[0005] Preferably, the measurement unit comprises a laser base, the laser base is installed with a laser drive board through a laser drive board installation screw and a cushion column, the laser drive board is connected with an infrared laser through a spring, the laser base is installed with a focusing lens installation cylinder, the focusing lens installation cylinder is placed with a focusing lens, the focusing lens installation cylinder is installed with a focusing lens locking nut, the rear of the focusing lens is installed with a laser radiator, the laser radiator is installed with an infrared laser, the both sides of the laser radiator are installed with a laser adjusting spring piece, the laser adjusting spring piece is installed with a laser adjusting screw outside, and the laser base is installed with a one -letter mirror through a one -letter mirror fixed plate in the groove.
[0006] Preferably, a fixed optical axis is installed between the upper fixing support and the lower fixing support through a screw.
[0007] Preferably, an angle adjusting bolt is installed above the lower fixing support.
[0008] Preferably, a pre-tightening nut is connected to the tail of the focusing lens mounting cylinder through an external thread.
[0009] Preferably, an optical glass is embedded into the front end of the laser base.
[0010] The beneficial technical effects of the present application are as follows: the device uses a camera as a stereoscopic imaging component, applies stereoscopic vision imaging technology to the field of wheel positioning, combines the method of image processing and the method of obtaining three-dimensional information in stereoscopic vision to realize wheel positioning detection, improves the speed and accuracy of wheel positioning, does not need to clamp a target plate or a sensor on a wheel through a clamp, realizes real non-contact measurement, does not need to push a trolley for compensation, and makes wheel positioning detection more convenient and fast. BRIEF DESCRIPTION OF DRAWINGS
[0011] Figure 1 The overall schematic view of the present application is shown.
[0012] Figure 2 The front view of the measurement unit of the present application is shown.
[0013] Figure 3 The internal sectional view of the measurement unit of the present application is shown.
[0014] Figure 4 The plan view of the measurement unit of the present application is shown.
[0015] Figure 5 The local enlarged view of the measurement unit of the present application is shown.
[0016] Reference mark: 1, reference optical axis, 2, CPU circuit board, 3, camera fixing seat mounting screw, 4, camera, 5, light-shielding cylinder, 6, exposure lamp plate, 7, camera fixing seat, 8, fixing frame locking screw, 9, upper fixing support, 10, target installation support screw, 11, target, 12, target installation screw, 13, fixed optical axis, 14, measuring unit, 14.1, laser drive board mounting screw, 14.2, laser drive board, 14.3, laser base, 14.4, optical glass, 14.5, one-character lens fixing plate, 14.6, one-character lens, 14.7, laser base mounting screw, 14.8, laser adjusting spring piece, 14.9, laser adjusting screw, 14.10, laser heat sink, 14.11, spacer, 14.1,2, infrared laser, 14.13, pre-tightening spring, 14.14, focusing lens locking nut, 14.1,5, focusing lens, 14.16, focusing lens mounting cylinder, 14.17, pre-tightening nut, 14.18, 15, target installation support, 16, angle adjusting bolt, 17, lower fixing support. DETAILED DESCRIPTION
[0017] The preferred embodiments of the present application will be described below with reference to the drawings. Those skilled in the art will understand that these embodiments are only used to explain the technical principles of the present application, and are not intended to limit the protection scope of the present application.
[0018] The utility model provides a non - contact four - wheel positioning appearance's wheel photographing measuring device, including reference optical axis 1, camera fixed base 7 is installed to reference optical axis 1 through camera fixed base mounting screw 3, upper fixed support 9 and lower fixed support 17 are installed to reference optical axis 1 through fixed frame locking screw 8, camera 4, light -proof cylinder 5 and exposure lamp plate 6 are installed in sequence through screw in the front of camera fixed base 7, CPU circuit board 2 is fixed through screw in the back of camera fixed base 7, target installation support screw 10 is installed with target installation support 15 in the front of upper fixed support 9 and lower fixed support 17, a plurality of targets 11 are installed to target installation support 15 front through target installation screw 12, a plurality of measuring units 14 are installed to reference optical axis 1 through laser base mounting screw 14.7, measuring unit 14 includes laser base 14.3, laser drive board 14.2 is installed to laser drive board mounting screw 14.1 and pad column 14.11 through laser drive board 14.3 back, infrared laser 14.12 is connected through plug spring to laser drive board 14.2, focusing lens mounting cylinder 14.16 is installed in laser base 14.3, focusing lens 14.15 is placed in focusing lens mounting cylinder 14.16, focusing lens locking nut 14.14 is installed in focusing lens mounting cylinder 14.16, laser radiator fin 14.10 is installed behind focusing lens 14.15, infrared laser 14.12 is installed in laser radiator fin 14.10, laser regulator spring piece 14.8 is installed in both sides of laser radiator fin 14.10, laser regulator screw 14.9 is installed to laser regulator spring piece 14.8 outside, a mirror 14.6 is installed through a mirror fixed plate 14.5 in the recess of laser base 14.3, fixed optical axis 13 is installed through screw between upper fixed support 9 and lower fixed support 17, angle adjusting bolt 16 is further installed on the upper side of lower fixed support 17, pre - tightening nut 14.17 is connected through outer thread to focusing lens mounting cylinder 14.16 tail, pre - tightening spring 14.13 is placed between pre - tightening nut 14.17 and laser base 14.3, optical glass 14.4 is embedded in the foremost end of laser base 14.3.
[0019] The reference optical axis 1 serves as a positioning reference for the entire mechanism. The camera fixing seat 7 is fixed to the reference optical axis 1 by the camera fixing seat mounting screw 3. Similarly, the upper fixing bracket 9 and the lower fixing bracket 17 are fixed to the reference optical axis 1 by the fixing bracket locking screw 8. To ensure the strength of the entire device, the fixed optical axis 13 is installed between the upper fixing bracket 9 and the lower fixing bracket 17 by a screw. The fixed optical axis 13 increases stability and improves the rigidity of the mechanism. In front of the camera fixing seat 7, the camera 4, the light-shielding cylinder 5, and the exposure lamp plate are installed in sequence by screws. The camera 4 is used to shoot the light curtain mapped onto the hub. The light-shielding cylinder 5 protects the camera 4 from external interference. The exposure lamp plate 6 provides light for the camera 4 to take clear images. The CPU circuit board 2 is fixed behind the camera fixing seat 7 by a screw. It receives commands from the upper computer, controls the switches of the measuring unit 14, the camera 4, and the exposure lamp plate 6. The captured images are uploaded to the upper computer through the network cable. The target mounting bracket 15 is fixed to the front of the upper fixing bracket 9 and the lower fixing bracket 17 by the target mounting bracket screw 10. Multiple targets 11 are fixed to the front of the target mounting bracket 15 by the target mounting screw 12. The targets 11 are mainly used for position detection and correction of multiple measuring units. Multiple measuring units 14 are installed on the reference optical axis 1 by the laser base mounting screw 14.7. The number of measuring units 14 depends on the diameter of the largest hub. The measuring units emit infrared beams to completely cover the entire hub. The main function of the measuring unit 14 is to emit multiple parallel infrared beams with equal intervals to ensure accurate measurement. The overall mechanism is installed inside the box by the angle adjustment bolt 16. Changing the extension length of the adjustment bolt 16 ensures that the measuring unit is consistent with the installation position.
[0020] The laser base 14.3 is made of aluminum alloy, and other parts of the measuring unit 14 are installed on the laser base 14.3. The laser drive board 14.2 is installed on the back of the laser base 14.3 through the laser drive board mounting screw 14.1 and the spacer 14.11. The infrared laser 14.12 is connected to the laser drive board 14.2 through a spring connector, and the laser drive board 14.2 controls the opening and power supply of the infrared laser 14.12. The laser base 14.3 is internally provided with a plurality of threaded holes for fixing the focusing lens mounting cylinder 14.16. The tail of the focusing lens mounting cylinder 14.16 is connected with a pre-tightening nut 14.17 through external threads. The pre-tightening spring 14.13 is arranged between the pre-tightening nut 14.17 and the laser base 14.3, so as to provide pre-tightening force for the focusing lens mounting cylinder 14.16 and prevent it from loosening. The focusing lens 14.15 is arranged in the focusing lens mounting cylinder 14.16. The focusing lens locking nut 14.14 clamps the focusing lens 14.15 through the internal threads of the focusing lens mounting cylinder 14.16. The laser heat sink 14.10 is arranged behind the focusing lens 14.15, and the infrared laser 14.12 is fixed in the hole in the middle of the laser heat sink 14.10. The laser heat sink 14.10 has the functions of fixing the infrared laser 14.12 and dissipating heat. The laser adjustment spring plate 14.8 is arranged on both sides of the laser heat sink 14.10, and the laser adjustment spring plate 14.8 is used for fixing the laser heat sink 14.10. The laser adjustment screw 14.9 is arranged outside the laser adjustment spring plate 14.8, and is used for adjusting the relative position of the light beam emitted by the infrared laser. The V-shaped groove in the front of the laser base 14.3 is provided with the linear mirror 14.6, and the linear mirror 14.6 is clamped in the groove of the laser base 14.3 through the linear mirror fixing plate 14.5. The linear mirror is a full-length cylindrical mirror, and one mirror can cover a plurality of infrared lasers. The light emitted through the linear mirror is parallel light, so the angle of the infrared laser does not need to be adjusted. The optical glass 14.4 is embedded in the front end of the laser base 14.3, and is used for protecting the lens and preventing dust. The principle of the measuring unit 14 is that the laser drive board 14.2 controls the opening of the infrared laser 14.12. The infrared laser 14.12 focuses the divergent light source of the infrared laser 14.12 to form a point light source. Then the point light source passes through the linear mirror 14.6 to form a plurality of parallel line light sources. Finally, the light beam source is mapped to the surface of the hub to realize measurement
[0021] Although the utility model has been described with reference to the preferred embodiments, various improvements can be made to it and equivalent parts can be replaced without departing from the scope of the utility model, and in particular, as long as there is no structural conflict, the technical features mentioned in each embodiment can be combined in any way. The utility model is not limited to the specific embodiments disclosed in the text, but includes all technical solutions falling within the scope of the claims.
[0022] In the description of the utility model, the terms "center", "upper", "lower", "left", "right", "vertical", "horizontal", "inner", "outer" and other terms indicating direction or positional relationship are based on the direction or positional relationship shown in the drawings, which is merely for the convenience of description, and does not indicate or imply that the device or element must have a specific orientation, be constructed and operated in a specific orientation, and therefore cannot be understood as a limitation on the utility model. In addition, the terms "first", "second", "third" are only for descriptive purposes and cannot be understood as indicating or implying relative importance.
[0023] In addition, it also needs to be explained that, in the description of the utility model, unless otherwise explicitly specified and limited, the terms "mounting", "connecting", "connection" should be broadly understood, for example, it can be fixed connection, or detachable connection, or integrally connected; it can be mechanical connection, or electrical connection; it can be directly connected, or indirectly connected through an intermediate medium, or the communication inside two elements. For those skilled in the art, the specific meaning of the above terms in the utility model can be understood according to the specific circumstances.
[0024] The term "includes" or any other similar term is intended to cover non-exclusive inclusion, so that the process, article or equipment / device including a series of elements not only includes those elements, but also includes other elements not explicitly listed, or also includes the elements inherent in the process, article or equipment / device.
[0025] So far, the technical scheme of the utility model has been described in combination with the preferred embodiments shown in the drawings, but those skilled in the art can easily understand that the protection scope of the utility model is obviously not limited to these specific embodiments. Without deviating from the principles of the utility model, those skilled in the art can make equivalent changes or replacements to related technical features, and the technical scheme after the changes or replacements will fall within the protection scope of the utility model.
Claims
1. A wheel photographing measuring device of a non-contact four-wheel aligner, comprising a reference optical axis (1), characterized in that: The reference optical axis (1) is installed with a camera fixing seat (7) through a camera fixing seat mounting screw (3), the reference optical axis (1) is installed with an upper fixing support (9) and a lower fixing support (17) through a fixing frame locking screw (8), the front of the camera fixing seat (7) is installed with a camera (4), a light-shielding cylinder (5) and an exposure lamp plate (6) in sequence through screws, and the rear of the camera fixing seat (7) is fixed with a CPU circuit board (2) through screws. The front of the upper fixing support (9) and the lower fixing support (17) is installed with a target mounting support (15) through a target mounting support screw (10), the front of the target mounting support (15) is installed with a plurality of targets (11) through a target mounting screw (12), and the reference optical axis (1) is installed with a plurality of measuring units (14) through a laser base mounting screw (14.7).
2. The wheel photographing measuring device of the non-contact four-wheel aligner according to claim 1, wherein: The measuring unit (14) comprises a laser base (14.3), the back of the laser base (14.3) is installed with a laser drive board (14.2) through a laser drive board mounting screw (14.1) and a cushion column (14.11), the laser drive board (14.2) is connected with an infrared laser (14.12) through a spring, the laser base (14.3) is installed with a focusing lens mounting cylinder (14.16), the focusing lens mounting cylinder (14.16) is placed with a focusing lens (14.15) inside, the focusing lens mounting cylinder (14.16) is installed with a focusing lens locking nut (14.14) inside, the back of the focusing lens (14.15) is installed with a laser radiator (14.10), the laser radiator (14.10) is installed with an infrared laser (14.12), the laser radiator (14.10) is installed with a laser adjusting spring piece (14.8) on both sides, the laser adjusting spring piece (14.8) is installed with a laser adjusting screw (14.9) outside, and the laser base (14.3) is installed with a one-letter mirror (14.6) through a one-letter mirror fixing plate (14.5) in the groove.
3. The wheel photographing measuring device of the non-contact four-wheel aligner according to claim 1, wherein: The upper fixing support (9) and the lower fixing support (17) are installed with a fixed optical axis (13) through screws.
4. The wheel photographing measuring device of the non-contact four-wheel aligner according to claim 1, wherein: The lower fixing support (17) is further installed with an angle adjusting bolt (16).
5. The wheel photographing measuring device of the non-contact four-wheel aligner according to claim 2, wherein: The tail of the focusing lens mounting cylinder (14.16) is connected with a pre-tightening nut (14.17) through an external thread, a pre-tightening spring (14.13) is placed between the pre-tightening nut (14.17) and the laser base (14.3).
6. The wheel photographing measuring device of the non-contact four-wheel aligner according to claim 2, wherein: The most front end of the laser base (14.3) is embedded with optical glass (14.4).