How to fix the wheels under the sofa bed?

Install the wheels, insert the four wheels into the plastic sleeves at the lower ends of the bed legs respectively, and press down the bed body hard to complete the installation of the whole caster.

Then, the screws respectively pass through the screw holes on the vertical rail in the rear hanging basket and the lower frame of the front guardrail, and are locked into the screw holes corresponding to the bedplate; Finally, lock the fixed wooden board and continue to pull down the connecting sleeve until the connecting sleeve is vertical to the ground, thus completing the fixing of the movable guardrail. There are two ways, one is to install wheels with brake pedals, just like many stroller wheels, and the other is to put obstacles in front of the wheels.