Pull-out force detecting device for valve rocker ball head combined component

Abstract

The invention discloses a pull-out force detecting device for a valve rocker ball head combined component. The pull-out force detecting device comprises a bracket, a drill chuck and a balance weight lever, wherein the bracket is provided with a clamping board, the clamping board is provided with a bayonet, and a groove in a cylinder installation part of the ball head combined component is clamped in the bayonet during detection, thereby enabling the ball head combined component is fixed on the bracket; the drill chuck is used for clamping a solid part of a ball head cushion block of the ball head combined component; and the upper end of the balance weight lever is fixedly connected with the drill chuck, and the balance weight block is arranged at the lower end of the balance weight lever during detection. The pull-out force detecting device can carry out an axial pull-out force test on the ball head combined component and a pull-out force test after the ball head combined component rotate by a certain angle, can simulate the pull-out force of the ball head combined component under various operating conditions, and is more accurate in detection result.

Description

technical field [0001] The invention relates to the field of engine test and detection, in particular to a device for detecting the pull-out force of a valve rocker arm ball joint joint. Background technique [0002] The valve rocker arm is one of the components of the internal combustion engine valve-type valve train. The valve rocker arm is the transmission element between the push rod and the valve. Its function is to change the movement direction of the push rod and drive the valve to open and close. In particular, it involves When it comes to four-valve or multi-valve internal combustion engines, corresponding improvements are made to the valve rocker arm at the same time. For example, the utility model patent application number 200320131175.3 relates to a four-valve diesel engine rocker arm assembly, wherein the ball joint is One of its important parts, the ball joint includes a ball body and a ball pad. One end of the ball body is a ball head, and the other end is a c...

AI Technical Summary

Problems solved by technology

[0004] However, when the above-mentioned testing machine is used for the axial force test, the upper and lower chucks of the testing machine are fixed, and only the axial test can be done, and it cannot simulate various working conditions in which the ball pad and the ball head are in rotatable conditions. , on the contrary, the ball head pad is most likely to fall off when it is offset by a certain angle relative to the ball head

Therefore, the data obtained by the above detection device is not accurate enough

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