Automobile dust tightness test dust hole

Abstract

The invention discloses an automobile dust tightness test dust hole comprising a dust hole body; sliding rails are arranged on the inner walls of the two sides in the dust hole body; a wheel shaft isconnected with one end of a push rod; the other end of the push rod is connected with a cross rod parallel to the wheel shaft; two towing hook fixing mechanisms which are opposite to each other are arranged at symmetrical positions of the cross rod; two first vertical rods are fixed on the cross rod; the middle of a rotating rod is rotationally connected with the first vertical rods; an F-shaped escapement rod is connected with the first vertical rods in a sliding manner; the upper end of the F-shaped escapement rod is used for forking the rotating rod; a push plate is arranged at the lower end of the F-shaped escapement rod; the F-shaped escapement rod is connected with the first vertical rods through first springs; the rotating rod is hooked by a towing hook. Running of the test vehicleis automatically tracked in front of a test vehicle, a constant vehicle distance is kept, a short-vehicle-distance dust test can be simulated, the test vehicle can be automatically lifted when runningout of the dust hole, a way is offered for the vehicle to run out of the hole, and flying dust in front of the test vehicle is continuously and automatically tracked after the test vehicle enters thehole again.

Description

Technical field [0001] The invention relates to the technical field of dust tightness test, and particularly relates to dust holes for automobile dust tightness test. Background technique [0002] Dust tightness test When testing in a dust cave, the test vehicle needs to shuttle back and forth through the dust cave, that is, after exiting from one end of the dust cave, make a U-turn, and enter the dust cave from the opening and repeat several times before obtaining accurate data. . During the automobile test, it is necessary to raise dust as the front of the car moves to simulate the road conditions of the car driving with the car. Because the dust hole has been in a state of a lot of dust for a long time, and the positioning signal in the dust hole is not good, the existing automatic The sensor equipment of the dust-raising device that follows the car is prone to failure when used in the dust hole. The following distance is suddenly far and near. It is necessary to reserve a lo...

AI Technical Summary

Problems solved by technology

During the car test, it is necessary to raise dust along with the moving front of the car to simulate the road conditions of the car driving with the car. Due to the long-term state of dust in the dust cave and the poor positioning signal in the dust cave, the existing automatic The sensor equipment of the dust-flying device that follows the car is prone to failure when it is used in the dust tunnel. The distance between the car and the car fluctuates. It is necessary to reserve a long following distance to ensure safety. It cannot simulate the dust test of driving in close proximity. And the test vehicle needs to turn around and enter the dust tunnel after driving out of the dust hole. The automatic car following device cannot automatically rise to make way for the test vehicle when the car exits the dust hole, nor can it automatically land before the car re-enters the hole and track it again. front of test car

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