Motor vehicle tail gas detection extension pipe

Abstract

The invention relates to a motor vehicle tail gas detection extension pipe and belongs to the field of automobile tail gas collection and detection equipment. The device is characterized by comprisinga tightening fixing device and an extension pipe body, wherein the tightening fixing device comprises a tightening cylinder and a tightening rope, wherein an upper end of the tightening cylinder is open, a lower end of the tightening cylinder is connected with the extension pipe body, a plurality of tightening supporting arms are arranged on an upper portion of the open end of the tightening cylinder, closing gaps are formed between the tightening supporting arms, rope body penetrating holes are formed in upper ends of the tightening supporting arms, the middle of the tightening rope is arranged in the rope body penetrating holes in a penetrating mode, and two ends of the tightening rope are folded and then connected with rope rings. When the rope ring is pulled, the tightening rope can hoop all the tightening supporting arms to enable the tightening supporting arms to contract inwards and get close to each other. The device is advantaged in that tail gas collection operation can be conveniently carried out on vehicles of different exhaust pipe types.

Description

technical field [0001] The invention belongs to the field of automobile tail gas collection and detection equipment, and in particular relates to a motor vehicle tail gas detection extension tube. Background technique [0002] Following the progress of social production level, the development of domestic motor vehicles is extremely rapid now. Modern motor vehicles are widely used in freight, passenger transportation and family life, which brings us great convenience, but the problem of motor vehicle exhaust pollution to urban air is also becoming more and more serious. Out of emphasis on environmental protection, the country has formulated strict motor vehicle exhaust testing standards for the exhaust pollution of fuel vehicles, and requires fuel vehicles to participate in exhaust testing every year. [0003] Exhaust gas testing is mainly carried out by professional exhaust gas testing stations. Generally, the exhaust pipe of a family car is located under the rear of the v...

AI Technical Summary

Problems solved by technology

Generally, the exhaust pipe of a family car is located under the rear of the vehicle, which is easy to connect with the automobile exhaust detector and collect exhaust gas; however, due to the variety of motor vehicles, the exhaust pipes of special vehicles such as large freight vehicles are not uniformly arranged in the same position Yes, the exhaust pipes of some vehicles are set in the middle of the chassis, and the exhaust pipes of some vehicles are set on the top; in addition, the diameters of the exhaust pipes of different vehicles are uneven, which brings great difficulties to the collection and detection of exhaust gas. great difficulty

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