Internal expansion plugging device for cam shaft hole

Abstract

The invention relates to an internal expansion plugging device for a cam shaft hole. The internal expansion plugging device for the cam shaft hole comprises a pull rod, a rear end inner sleeve, inner sleeves, a front end inner sleeve, outer sleeves, O-shaped rings, a pin, a handle and springs, wherein a boss structure with the increased outer diameter is arranged at one end of the pull rod, the other end of the pull rod is movably connected with the handle through the pin, a cam structure is arranged at the position of connection between the handle and the pull rod, and the pull rod penetrates through the rear end inner sleeve, the first O-shaped ring, the first outer sleeve, the second O-shaped ring, the first inner sleeve, the third O-shaped ring, the second outer sleeve, the fourth O-shaped ring and the front end inner sleeve in sequence. According to the internal expansion plugging device for the cam shaft hole, the purpose of plugging an oil hole formed in the multi-gear cam shaft hole can be effectively achieved, and plugging is reliable.

Description

technical field [0001] The invention belongs to the field of engine testing, in particular to an internal expansion plugging device for a camshaft hole. Background technique [0002] The leakage of the water passages, oil passages and cavities of the engine block, cylinder head and assembly is directly related to the overall performance of the engine. When testing the leakage of water passages, oil passages and cavities, it is necessary to seal the relevant holes and surfaces. , and then inflate the entire blocked inner cavity, and detect its leakage with a leak detector. When sealing the camshaft hole, if the camshaft hole is a whole or the camshaft cover has been installed, it is difficult to achieve normal sealing by the traditional sealing method, so design a camshaft hole with simple operation and reliable sealing Pore ​​plugging device is particularly important. [0003] Most of the camshaft holes of the engine are on the top of the cylinder head, and there are lubri...

AI Technical Summary

Problems solved by technology

[0005] 1. The existing sealing technology of the inner hole of the camshaft hole can be used normally when the lower sealing head and the push rod can be arranged, but it cannot be used when the space is narrow and the plug and the push rod cannot be arranged;

[0006] 2. In the case that there are multiple holes in a single camshaft hole that need to be blocked and a complete cavity needs to be formed, this technical solution will block the different holes separately to form a relatively independent cavity, so it cannot be used ;

[0007] 3. The plugging of each camshaft hole requires a separate power source, that is, if there are oil holes in 5 camshaft holes that need to be plugged, 5 power sources are required;

[0008] 4. This solution cannot be used when the camshaft cover has been installed, or the camshaft hole is a whole, that is, the camshaft hole is a complete cylindrical hole;

[0009] 5. The existing technology is difficult to achieve manual sealing

Images