CN-116659635-B - Calibration unit for constant-speed universal four-wheel aligner of articulated rod

CN116659635BCN 116659635 BCN116659635 BCN 116659635BCN-116659635-B

Abstract

The invention discloses a hinge rod constant-speed universal four-wheel aligner verification unit, which belongs to the technical field of transportation and comprises a unit seat, a driving motor arranged on one side of the unit seat, a constant-speed rotating seat arranged above the unit seat, a master pin combination arranged above the constant-speed rotating seat, half shaft combinations clamped on two sides of the master pin combination and angle adjustment assemblies sleeved above the master pin combination, wherein the number of the angle adjustment assemblies is two, the two angle adjustment assemblies comprise an angle modulation base, an angle modulation driving power arm, angle modulation hinge plates, angle modulation master pin sleeves and angle modulation deflector rods, the upper surface of the unit seat is movably connected with the lower surface of the angle modulation base, the inner side of the angle modulation base is attached to one end of the angle modulation driving power arm, the other end of the angle modulation driving power arm is connected with the angle modulation deflector rod in a penetrating way, one end of the angle modulation deflector rod far away from the angle modulation driving power arm is connected with the angle modulation hinge plates, and the inner side of the angle modulation hinge plates is connected with the angle modulation master pin sleeves. The invention adopts the constant velocity universal joint connection of the articulated rod, thereby improving the measurement accuracy.

Inventors

SHAO CHENGHUI
WANG ZISHUO
ZHANG QIXUN

Assignees

吉林大学

Dates

Publication Date: 20260505
Application Date: 20230516

Claims (2)

1. The verification unit for the constant-speed universal four-wheel aligner of the hinging rod is characterized by comprising a unit seat, a driving motor arranged on one side of the unit seat, a constant-speed rotating seat arranged above the unit seat, a master pin combination arranged above the constant-speed rotating seat, a half shaft combination clamped on two sides of the master pin combination and angle adjustment assemblies sleeved above the master pin combination, wherein the number of the angle adjustment assemblies is two, the two angle adjustment assemblies comprise angle modulation bases, angle modulation driving arms, angle modulation hinge plates, angle modulation master pin sleeves and angle modulation shifting rods, the upper surfaces of the unit seat are movably connected with the lower surfaces of the angle modulation bases through screws, the inner sides of the angle modulation bases are attached to one ends of the angle modulation driving arms, the other ends of the angle modulation driving arms are connected with the angle modulation shifting rods in a penetrating mode, one ends of the angle modulation shifting rods away from the angle modulation driving arms are connected with the angle modulation hinge plates, and the inner sides of the angle modulation hinge plates are connected with the angle modulation master pin sleeves; One end of the constant-speed rotating seat is provided with a constant-speed seat inner spherical surface, and the other end of the constant-speed rotating seat is provided with a constant-speed seat hinging rod jack, a constant-speed seat small shaft which is arranged above the constant-speed seat hinging rod jack in a protruding mode and a constant-speed seat shaft hole which is arranged above the constant-speed seat small shaft; An encoder is arranged on the inner side of the unit seat, and an output shaft of the encoder is inserted into the shaft hole of the constant-speed seat; The main pin combination comprises a main pin rod, main pin side connecting plates arranged on two sides of the main pin rod, a main pin ball head arranged on one end of the main pin rod, which is close to the main pin side connecting plates, and main pin locking and unlocking plates arranged between the main pin side connecting plates on two sides; and the outer spherical surface of the kingpin ball head is attached to the inner spherical surface of the constant speed seat.
2. The apparatus of claim 1, wherein the drive motor is disposed at one end of the angle adjustment base, and the encoder is disposed at one side of the angle adjustment base.

Description

Calibration unit for constant-speed universal four-wheel aligner of articulated rod Technical Field The invention belongs to the technical field of transportation, and particularly relates to a verification unit of a constant-speed universal four-wheel aligner of a hinge rod. Background The four-wheel aligner is used for testing the wheel alignment parameters of the automobile, comparing the wheel alignment parameters with the design parameters of the original factory, and guiding a user to correspondingly adjust the wheel alignment parameters so as to meet the original design requirements. The wheel alignment parameters include toe angle, camber angle, caster angle, and caster angle. However, the accuracy of the four-wheel aligner serving as the calibrating device is difficult to calibrate in the use process, wherein the calibration of the caster angle and the caster angle of the kingpin is difficult, because parameters cannot be directly measured, complicated mathematical model calculation is required to be performed on indirectly measured parameters, and in addition, a plurality of parameters with relatively small influence are required to be ignored in the calculation process for practical application, so that the accuracy of detection data is difficult to ensure. Only the qualified four-wheel aligner can accurately test the wheel alignment parameters of the automobile, so that the verification of the four-wheel aligner is extremely important. Currently, the four-wheel aligner portable inspection device mainly comprises the following three types: 1. The utility model patent number of an integral vehicle-mounted digital display four-wheel aligner developed by Jie science and technology Co., ltd., ZL200710055868.1, the utility model patent number of ZL 200720094051.0, the device has the following problems in use: (1) The arc guide rail is adopted to adjust the main pin inner inclination angle and the main pin back inclination angle, so that the arc guide rail has high processing precision and increases the processing cost; (2) The angle of inclination of the kingpin is adjusted through the screw nut, and the transmission mechanism increases the weight of equipment and the processing cost; (3) The lower end of the simulated kingpin is connected with the kingpin cross shaft, and the kingpin is not a constant velocity universal joint, namely the horizontal rotation angle is unequal to the rotation angle of the kingpin around the kingpin when the inclination angle of the kingpin is measured. 2. Ball cage constant velocity universal four-wheel aligner inspection bench Patent No. ZL202110379943.X The device has the following problems in use: (1) The device adopts the constant velocity universal joint connection of simplified ball cage, but the structure of ball cage universal joint is complicated, and machining accuracy is required high, if produce the clearance between the universal joint structure, just can not realize equiangular velocity rotation. (2) In the zero point inspection process, the sensor is easy to have unstable indication or no indication phenomenon, and the verification quality of the four-wheel aligner is affected; 3. direct-drive mechanical arm type single-wheel kingpin internal inclination angle and kingpin back inclination angle calibrating device Patent No. ZL201510166595.2, patent No. ZL 2015112208. X The device has the horizontal rotation angle when measuring the king pin inclination and the angle that the king pin rotated around itself inequality problem. Disclosure of Invention The invention aims to provide a hinge rod constant-speed universal four-wheel aligner verification unit which solves the problem of measurement errors caused by non-constant speed of a cross universal joint in the verification process of the conventional four-wheel aligner verification device in the prior art. In order to achieve the above purpose, the invention provides a hinge rod constant-speed universal four-wheel aligner verification unit, which comprises a unit seat, a driving motor arranged on one side of the unit seat, a constant-speed rotating seat arranged above the unit seat, a master pin combination arranged above the constant-speed rotating seat, half shaft combinations clamped on two sides of the master pin combination and angle adjustment assemblies sleeved above the master pin combination, wherein the number of the angle adjustment assemblies is two, the two angle adjustment assemblies comprise angle adjustment bases, angle adjustment driving arms, angle adjustment hinge plates, angle adjustment master pin sleeves and angle adjustment deflector rods, the upper surfaces of the unit seat are movably connected with the lower surfaces of the angle adjustment bases through screws, the inner sides of the angle adjustment bases are attached to one ends of the angle adjustment driving arms, the other ends of the angle adjustment driving arms are connected with the angle adjustment deflector rods in a pe