Assembly and welding method of exhaust pipe and rear silencer of new energy vehicle

Abstract

The invention relates to an assembly and welding method of an exhaust pipe and a rear silencer of a new energy vehicle. The assembly and welding method of the exhaust pipe and the rear silencer of thenew energy vehicle adopts a fixation machine as follows, wherein the fixation machine comprises a clamping device used for clamping the silencer, and an angle modulation device is arranged at the bottom of the clamping device. According to the assembly and welding method, by tensioning a pull rope to enable first pressing plates to be close to a supporting plate, the silencer is squeezed and fixed, one pull rope is utilized for simultaneously driving multiple first pressing plates to move, there is no need to separately fix a plurality of first pressing plates, and the fixing steps are simplified. Moreover, when the pull rope is extended, the first pressing plates spring upwards simultaneously under the effect of springs so that a clamp can be quickly detached. According to the assembly and welding method, a gear drives an incomplete gear to rotate by a certain angle, thus a supporting mechanism is driven to follow the incomplete gear to rotate, the clamping device clamps the silencerto rotate synchronously, and convenience is brought to rotate portions which are inconvenient to weld to positions facilitating welding.

Description

technical field [0001] The invention relates to the technical field of muffler assembly, in particular to a method for assembling and welding a rear muffler of an exhaust pipe of a new energy vehicle. Background technique [0002] The automobile muffler is mainly used to reduce the noise generated by the engine of the motor vehicle. The principle is that the automobile exhaust pipe is composed of two pipes with different lengths. The length difference is equal to half of the wavelength of the sound waves emitted by the car, so that the two rows of sound waves interfere with each other and cancel each other out when they are superimposed, reducing the sound intensity and reducing the transmitted sound, thereby achieving the effect of noise reduction. [0003] The muffler and the exhaust pipe are fixed by welding, and the shape of the rear muffler is also different, such as round and oval, etc. When welding the place where the muffler is in contact with the exhaust pipe, it is...

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Problems solved by technology

[0003] The muffler and the exhaust pipe are fixed by welding, and the shape of the rear muffler is also different, such as round and oval, etc. When welding the place where the muffler is in contact with the exhaust pipe, it is necessary to The muffler and the exhaust pipe are fixed, and the existing fixing fixture has the following disadvantages: one, when the oval-shaped muffler is fixed, a plurality of pressing plates are required to be fixed in multiple points, and when each pressing plate is fixed, It needs to be operated separately, which makes the fixing and dismounting process cumbersome; 2. When the oval muffler is welded in an exhaust pipe, because its lower half is blocked, it increases the difficulty of fabrication during welding and is inconvenient to weld

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