RU207302U1 - STAND FOR DIAGNOSING CAR PIVOT JOINTS ON FLOW LINES - Google Patents

Abstract

Utility model A stand for diagnosing pivot connections of cars on production lines consists of a reel lifter and measuring platforms. An eccentric axle with a turning and fixing mechanism is proposed in a reel lifter for changing the lift height of the front axle of a car, which allows you to change the lift height within the eccentricity. of two blocks with two sets of platforms and allow you to measure the movement of the platforms when lifting the bridge and when lowering with automatic transmission of a signal to a computer. The developed stand allows you to automatically measure the clearance in pivot joints with the output of values to a computer.

Description

A number of devices are known with the help of which the clearances in the pivot joints are determined. So the control of the radial and axial clearances in the pivot joints is carried out by moving the trunnion relative to the front axle boss, which is fixed by an indicator attached to the front axle beam. Clearances are measured in two wheel positions: suspended and after lowering the wheel to the floor. Since the measurement base is approximately twice the length of the king pin, the value of the radial clearance of the king pin will be two times less than the value recorded by the indicator. The axial clearance is measured with a flat feeler inserted between the upper lug of the stub axle and the front axle boss.

A device is known, consisting of movable platforms and a jack. The measurement principle is based on hanging the wheels with a jack, and then lowering them onto movable platforms, which, moving in the transverse direction through the corresponding sensors, and calculations indicate the size of the gap.

Known hydraulic backlash detector DL-003, which allows you to measure the gap through the movement of the steered wheels with movable platforms.

Known lift for hanging cars [1], containing a fixed base mounted on the foundation, on which is fixed a crossbar with rotary pickups for hanging elements of cars.

The closest to the invention is a lift for hanging a car [2], in which the grips are made in the form of a rotary coil with rubber rims, with a ratchet wheel rigidly fixed to the coil.

However, the known designs do not allow the measurement of clearances in the pivot joints in automatic mode when diagnosing and maintaining vehicles of various brands on production lines.

The aim of the invention is to develop a stand for measuring clearances in pivot joints in automatic mode during diagnostics and maintenance of cars of various brands on production lines.

The stand for diagnosing pivot connections of cars on production lines belongs to diagnostic garage equipment and can be installed on the TO-1 production line or at the D-1 general diagnostic diagnostic post.

The stand for diagnostics of pivot joints of cars on production lines contains a reel lift with a stepless change in the lift height and four measuring platforms.

To increase productivity, an automatic removal of the gaps in the pivot joints is provided when driving through the proposed elevator using blocks of measuring platforms.

FIG. 1 shows a diagram of a stand consisting of a reel lifter and four measuring sites, two on each side of the vehicle.

The reel lifter consists of a reel 1 pivotally mounted on an eccentric axis 2 placed in bearings mounted on a fixed base. Discs with holes 3 are installed on the eccentric axis on the splines, with the help of which, the movement of the coil along the axis is limited and the lifting height can be changed when the eccentric axis is turned.

Brackets 4 with clamps 5 are attached to the bearing housings to fix the eccentric axis in the desired position.

The measuring pads of FIG. 2 consist of a lower fixed platform 6 with a fixed solenoid 7 and a movable platform 8 with a rod 9, while a ball bearing 10 is installed between the platforms.

The stand works as follows. By turning the eccentric axis, the coil is set to the required height, according to the car brand and fixed.

The car, moving forward, runs the front beam onto the coil, which, turning, raises the front axle of the car, while the gaps in the pivot joints are selected, and the wheels of the car pull the platforms inward, moving the core into the solenoid. The movement signal is sent to the computer. With further movement, the wheels of the car are fully suspended and the platforms of the first block are returned to their original position with the help of return springs. Moving further, the car with its front wheels lowers onto another block of measuring pads, while the gaps are again selected by lowering the wheels, the pads move outward, the core enters the solenoid, and the gap measurement signal goes to the computer. The car brand is preliminarily entered into the computer, and the movement of the platforms is transferred to the clearance of the pivot joints. The car travels further and the rear axle does not touch the coil as the rims are located lower. Thus, the proposed stand allows diagnosing pivot connections of various brands of cars on production lines.

Claims (1)

A stand for diagnosing pivot connections of cars on production lines, containing a reel lift with a stepless change in the lift height, four measuring platforms, two on each side for automatic removal of the gaps in the pivot connections by a device for moving the moving platforms and transmitting a signal to a computer when the diagnosed vehicle passes through reel lifter, consisting of a coil pivotally mounted on an eccentric axis, placed in bearings fixed on a fixed base, disks with holes are installed on the eccentric axis on the splines, with which the movement of the coil along the axis is limited and the lifting height can be changed when the eccentric axis is turned , brackets with clamps are attached to the bearing housings to fix the eccentric axis in the desired position, the measuring platforms consist of a lower fixed platform with a fixed solenoid and a movable platform with a stem and a return spring d, while a ball bearing is installed between the platforms.

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