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CN-113532334-A - Device and method for measuring toe-in angle and camber angle of vehicle

CN113532334ACN 113532334 ACN113532334 ACN 113532334ACN-113532334-A

Abstract

The invention discloses a device and a method for measuring a toe-in angle and a camber angle of a vehicle, which comprises measuring components respectively fixed on two sides of the vehicle to be measured, wherein each measuring component comprises a reflector, a support plate, a laser component and an adjusting component; the laser assembly comprises a measuring laser, the measuring laser is fixed on the side surface of the support plate far away from the vehicle to be detected, and a measuring beam hole for allowing a measuring beam of the measuring laser to pass through is formed in the support plate; the supporting plate is fixed on the adjusting component and can realize the position adjustment of the supporting plate through the adjusting component, a reflection block is arranged at the position, close to the measuring beam hole, of the reference surface of the supporting plate, a reflection surface with an included angle of 45 degrees with the reference surface is arranged on the reflection block, and a dial perpendicular to the reference surface is arranged at the end part of the supporting plate facing the reflection surface. The portable measuring instrument can guarantee measuring accuracy, is small in size and light in weight, and improves carrying convenience.

Inventors

  • JIA FEI

Assignees

  • BEIJING CHANGAN AUTOMOBILE ENGINEERING TECH RES CO LTD

Dates

Publication Date
20211022
Application Date
20210730
Priority Date
20210730

Claims (8)

  1. 1. The utility model provides a toe angle and camber angle measuring device before vehicle, is including being fixed in the measuring component who waits to examine the vehicle both sides respectively, its characterized in that: the measuring assembly comprises a reflector (1), a support plate (2), a laser assembly (3) and an adjusting assembly (4), the reflector (1) is fixed on a wheel, the plane of the reflector (1) is vertical to the axis of the wheel, and a wheel center mark (11) is arranged at the position of the reflector (1) corresponding to the axis of the vehicle; the laser assembly (3) comprises a measuring laser, the measuring laser is fixed on the side face, far away from the vehicle to be detected, of the supporting plate (2), a measuring beam hole (21) for a measuring beam (31) of the measuring laser to penetrate through is formed in the supporting plate (2), and the side face, close to the vehicle to be detected, of the supporting plate (2) is a reference surface; the supporting plate (2) is fixed on the adjusting component (4), the position of the supporting plate (2) can be adjusted through the adjusting component (4), a light reflecting block (6) is arranged at the position of the reference surface of the supporting plate (2) close to the measuring beam hole (21), the reflecting block (6) is provided with a reflecting surface (61) which forms an included angle of 45 degrees with the reference surface, a dial (24) perpendicular to the reference surface is arranged at the end of the supporting plate (1) facing the reflecting surface (61), the dial (24) is provided with a transverse toe-in angle reading area (241) and a vertical camber angle reading area (242), a measuring beam (31) emitted by a measuring laser penetrates through a measuring beam hole (21) on the supporting plate (2) and then is reflected to a reflecting surface (61) of the reflecting block (6) through the reflecting plate (1) on the wheel, then reflected to the scale (24) and the toe angle and camber angle of the vehicle are determined by the readings on the scale (24).
  2. 2. The vehicle toe and camber angle measuring device according to claim 1, wherein: measuring beam hole (21) are "T" style of calligraphy, including horizontal bar hole and middle part and horizontal bar hole through connection's vertical bar hole, the crossing line of reflection of light face (61) and base face is parallel with vertical bar hole.
  3. 3. The vehicle toe and camber angle measuring device according to claim 1 or 2, characterized in that: the front end part and the rear end part of the reflector (1) are respectively hinged and fixed with a first clamping jaw (12) and a second clamping jaw (13), a spring (14) is connected between the first clamping jaw (12) and the second clamping jaw (13), and inward pressure is provided through the spring (14).
  4. 4. The vehicle toe and camber angle measuring device according to claim 1 or 2, characterized in that: the wheel center mark positioning device is characterized by further comprising a positioning assembly (5), wherein the positioning assembly (5) comprises a positioning laser (52) and a reference laser (51) fixed on the supporting plate (2) on one side, a reference reflection point (53) corresponding to the position of the reference laser (52) is arranged on the supporting plate (2) on the other side, a positioning beam hole (23) and a reference beam hole (22) corresponding to beams emitted by the positioning laser (52) and the reference laser (51) are arranged on the supporting plate (2), and the distance from the measuring beam hole (21) to the wheel center mark (11) is the same as the distance from the measuring beam hole (21) to the positioning beam hole (23).
  5. 5. The vehicle toe and camber angle measuring device according to claim 1 or 2, characterized in that: the adjusting component (4) comprises a base (44), and an X-direction adjusting component (41), a Y-direction adjusting component (42) and a Z-direction adjusting component (43) which are fixed on the base (44), the X-direction adjusting assembly (41) comprises an X-direction sliding rail (411), an X-direction sliding block (412) and an X-direction lead screw (413), the X-direction sliding rail (411) is arranged on the upper surface of the base (44), and the X-direction sliding block (412) moves along the X-direction sliding rail (411) under the driving of the X-direction lead screw (413); the Y-direction adjusting assembly (42) comprises a Y-direction sliding rail (421), a Y-direction sliding block (422) and a Y-direction lead screw (423), the Y-direction sliding rail (421) is arranged on the upper surface of the X-direction sliding block (412), the Y-direction sliding rail (421) is perpendicular to the X-direction sliding rail (411), and the Y-direction sliding block (422) moves along the Y-direction sliding rail (421) under the driving of the Y-direction lead screw (423); the Z-direction adjusting assembly (43) comprises an upright post (431), the lower end of the upright post (431) is fixedly connected with the Y-direction sliding block (422), and a guide sleeve (25) in sliding fit with the upright post (431) and a locking screw (432) for locking the position of the guide sleeve (25) are arranged on the supporting plate (2).
  6. 6. The vehicle toe and camber angle measuring device according to claim 5, wherein: the base (44) is rectangular, one of four corners is provided with a first supporting leg (441) with fixed height, and the other three are provided with second supporting legs (442) with adjustable height.
  7. 7. The vehicle toe and camber angle measuring device according to claim 1 or 2, characterized in that: the wheel center mark (1) is in a cross shape, and the center of the wheel center mark is circular.
  8. 8. A method for measuring a toe angle and a camber angle of a vehicle, comprising the steps of: s1, fixing the reflector (1) on the wheel, and adjusting the position of the reflector (1) to enable the axis of the wheel to pass through the wheel center mark (11); s2, adjusting the position of the support plate (2) through the adjusting component (4) to enable the reference surface of the support plate (2) to be parallel to the XZ plane of the whole vehicle coordinate system; s3, the measuring laser is turned on, the measuring beam (31) emitted by the measuring laser irradiates the wheel center mark (11) through the measuring beam hole (21) and forms a first reflected beam (32), the first reflected beam (32) forms a second reflected beam (33) after being reflected by the reflecting surface (6) of the reflecting block (6), the second reflected beam (33) irradiates the dial (24) at the end part of the supporting plate (2), and the toe angle and the camber angle of the vehicle are determined through the reading on the dial (24).

Description

Device and method for measuring toe-in angle and camber angle of vehicle Technical Field The invention relates to a measuring tool, in particular to a device and a method for measuring a toe-in angle and a camber angle of a vehicle. Background The toe-in and camber angle of a wheel have a significant influence on the running stability of a vehicle, the life of a tire, and the like, and thus, in the maintenance of a vehicle, it is often necessary to measure the toe-in and camber angle. However, the currently used measuring devices are all large 3D measuring devices fixedly installed, but are not movable and inconvenient to use although the precision is high. Or the distance difference between the front edge and the rear edge of the tire is measured by a measuring tape, and the measurement precision is unacceptable. Some patents also search for portable measuring devices, but the effect is not satisfactory considering the use environment and the precision influence of the vehicle. CN108020133A discloses a device and a method for accurately measuring and adjusting the toe-in distance of an automobile, which reflects toe-in by measuring the distance difference between the front edge and the rear edge of a wheel. The data is not common data in automobile maintenance, and the toe-in angle or the distance difference between the front edge and the rear edge of the tire needs to be converted for use. The whole structure is purely mechanical, needs to span two sides of the vehicle and cover the front suspension length or the rear suspension length of the vehicle, still has larger one-dimensional size, and is inconvenient to carry. CN106985909A discloses a wheel alignment and toe angle adjustment system for a three-wheeled vehicle, which reflects the angle by means of laser reflection, but the positioning of the laser and the reflection plate both depend on the wheel itself, and lack accurate positioning. Considering that the toe-in angle of the wheel is generally a slight angle of about 10', and the wheel base deviation of the vehicle and the like affect the measurement system, it is difficult to obtain an accurate measurement result by this measurement method. In addition, the two technical schemes can only measure the toe-in angle and cannot measure the camber angle Disclosure of Invention The invention aims to provide a device and a method for measuring a toe-in angle and a camber angle of a vehicle, which can ensure the measurement precision, have small volume and light weight and improve the carrying convenience. The device for measuring the toe-in angle and the camber angle of the vehicle comprises measuring components which are respectively fixed on two sides of the vehicle to be detected, wherein each measuring component comprises a reflector, a support plate, a laser component and an adjusting component; the laser assembly comprises a measuring laser, the measuring laser is fixed on the side surface of the support plate far away from the vehicle to be detected, the side surface of the support plate close to the vehicle to be detected is a reference surface, and a measuring beam hole for allowing a measuring beam of the measuring laser to pass through is formed in the support plate; the utility model discloses a vehicle toe-in angle and camber angle measuring device, including backup pad, measuring laser, backup pad, measuring laser hole, adjusting part, measuring laser hole, the backup pad is fixed in adjusting part, can realize backup pad position adjustment through adjusting part, the position that the reference surface of backup pad is close to measuring beam hole is equipped with reflection of light piece, be equipped with the reflection of light face of personally submitting 45 contained angles with the reference on the reflection of light piece, the backup pad tip of this reflection of light face orientation is equipped with the calibrated scale perpendicular with the reference surface, the calibrated scale is equipped with horizontal toe-in angle reading area and vertical camber angle reading area, and the light beam that the measuring laser sent passes the measuring beam hole in the backup pad after the reflection of light piece to the reflection of light face on the wheel, then reflects to the calibrated scale, confirms vehicle toe-in angle and camber angle through the reading on the calibrated scale. Further, the measuring beam hole is of a T shape and comprises a transverse strip-shaped hole and a vertical strip-shaped hole, the middle of the vertical strip-shaped hole is in through connection with the transverse strip-shaped hole, and a line, intersecting with the base surface, of the light reflecting surface is parallel to the vertical strip-shaped hole. Furthermore, the front end part and the rear end part of the reflector are respectively hinged and fixed with the first clamping jaw and the second clamping jaw, and a spring is connected between the first clamping jaw and the second clamping ja