Front fork device for portal frames

Abstract

The invention discloses a front fork device for portal frames. The front fork device for the portal frames is provided with a lower yoke plate assembly, a right shock absorber and a left shock absorber. The lower yoke plate assembly comprises a vertical fork tube and a fork shoulder. The right shock absorber and the left shock absorber are vertically installed at the two ends of the fork shoulder correspondingly. The U-shaped portal frames are fixedly installed on shock absorption shells of the right shock absorber and the left shock absorber through hexagon socket head cap screws. The front fork device for the portal frames is simple in structure, flexible in operation, free of clamping stagnation, abnormal friction and abnormal sounds, free of oil seepage no matter whether the device is placed horizontally or reversely, good in leakproofness and dustproof performance, capable of improving the shock absorption performance and ensuring the comfort, good in safety and long in service life.

Description

technical field [0001] The invention relates to a gantry front fork device. Background technique [0002] When the vehicle is driving on a bumpy road, the vibration of the vehicle body will increase significantly, which will cause vibration and impact on the wrist and arm of the human body, making the human body feel uncomfortable. At the same time, the vibration of the handlebar will make it difficult for people to control the vehicle, and may cause Driving is unstable and even dangerous. In order to alleviate this vibration and impact, the vehicle adopts the method of installing the shock-absorbing front fork. In the prior art, the structure of the car's shock-absorbing front fork is mostly a fork riser installed on the top of the fork shoulder, and two forks are installed on the bottom of the fork shoulder. Legs, springs are set in the fork legs, due to the limitation of the shock-absorbing front fork structure, the shock-absorbing effect is not ideal, the stroke is smal...

AI Technical Summary

Problems solved by technology

[0002] When the vehicle is driving on a bumpy road, the vibration of the vehicle body will increase significantly, which will cause vibration and impact on the wrist and arm of the human body, making the human body feel uncomfortable. At the same time, the vibration of the handlebar will make it difficult for people to control the vehicle, and may cause Unsteady driving, even dangerous

In order to alleviate this vibration and impact, the vehicle adopts the method of installing the shock-absorbing front fork. In the prior art, the structure of the car's shock-absorbing front fork is mostly a fork riser installed on the top of the fork shoulder, and two forks are installed on the bottom of the fork shoulder. Legs, springs are set in the fork legs, due to the limitation of the shock-absorbing front fork structure, the shock-absorbing effect is not ideal, the stroke is small, and the handlebar vibrates greatly during driving, and it is difficult to guarantee comfort and stability. At the same time, the working flexibility and stability And poor safety performance, easy to produce oil leakage, short service life

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