Jack without vibratory noise

Abstract

The invention discloses a jack without vibratory noise. A radial through hole arranged in an upper end section of a pump core and a coaxial axle hole of a flexible vibration-isolated cap are communicated to form a first hinge pin hole. A first hinge pin sequentially passes through a second hinge pin hole, the first hinge pin hole and a third hinge pin hole. The second hinge pin hole and the third hinge pin hole are coaxial. The holes are in clearance fit. A first baffle ring groove arranged at the end head of the first hinge pin is locked and matched with a first snap spring hole of a first bidirectional snap spring. The outer cylindrical surface of the pump core and the hole of a pump cylinder are in clearance fit by the axle holes. A convex positioning section of the front end of an elastic cushion block is embedded into an inner baffle of a connecting rod of a pressing connecting rod, and the rear circular arc camber of the elastic cushion block is attached to the outer cylindrical surface of the pump cylinder. The second hinge pin sequentially passes through a fourth hinge pin hole, a hinge pin hole on a base of the jack and a fifth hinge pin hole. The fourth hinge pin hole and the fifth hinge pin hole are coaxial and in clearance fit by the axle holes. According to the technology provided by the invention, a noise source of a lorry-mounted oil jack can be eliminated well.

Description

technical field [0001] The invention relates to an environment-friendly hydraulic jack, in particular to a jack that eliminates vibration and noise. Background technique [0002] The vertical hydraulic jack has a wide range of uses. As a lifting tool for maintaining the car, it is generally accompanied by the supporting vehicle in case of urgent needs on the road. The traditional vehicle-mounted hydraulic jack is placed in the car compartment, and its oil leakage and oil seepage usually cause great attention from users and jack design and manufacturing units. Therefore, this type of vehicle-mounted hydraulic jack has been continuously improved for many years. Environmental protection requirements such as no oil leakage and no oil leakage have been better realized. However, with the great improvement in the quality of automobile design and manufacture, the noise of the automobile engine, box body and even the whole vehicle has become very small, and then the contradiction of...

AI Technical Summary

Problems solved by technology

However, with the great improvement in the quality of automobile design and manufacture, the noise of the automobile engine, box body and even the whole vehicle has become very small, and then the contradiction of the annoying noise that the tools in the car send out during the driving with the car is highlighted. Tools such as screwdrivers were isolated from each other with tool bags and tool bags to eliminate the noise caused by their collision with each other, but the hydraulic vertical jack equipped with the car continued to make disturbing noises in the resonance with the car. For this reason, the engineers have carefully analyzed and studied the way to solve the problem of vibration and noise of the hydraulic jack on the way

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