| 摘要 |
PURPOSE: A wheel ascending · descending apparatus of trailer is provided to universally apply to the various type of a trailer by having a simple structure, a certain operation, and a high durability. CONSTITUTION: A wheel ascending · descending apparatus of a trailer comprises a trailer(10), a rotary axis(130), a driving shaft(140) and a wheel ascending · descending apparatus(100). A wheel(200) is connected to the lower part of the trailer. The rotary axis is connected with a pillar type supporter(110) and a lower part of the cylinder(120) which the rod moves forward and backward. The driving shaft is connected to the rotary axis which equips a cylinder in the front direction with the bolt assembly. The wheel ascending · descending apparatus connects the wheel in both sides of the driving shaft. The wheel ascending · descending apparatus selectively ascends · descends the wheel according to the loading of freight and movement circumstance.
|
