Buy Heavy Duty 4 Axle Lowbed Semi Trailer Online – For Sale
Climbing Ladder of Heavy Duty 4 Axle Lowbed Semi Trailer
The climbing ladder is mostly utilize while loading big duty 3 axles or 4-axle low-bed semi-trailers with construction equipment on their own. If a climbing ladder is require to load construction equipment, the semi-trailer must first be stop, and park securely on a level area of a public place or road. The heavy-duty 3-axle or 4-axle low-bed semi-trailer has the ladder largely weld to the tail.
Note: In order to prevent the ladder from falling or bouncing back before it is set in place, which might result in injuries to people, the operator should be careful and stand by the ladder. Users are not permit to change the hydraulic power ladder to utilize another power source, such as the primary vehicle power take-off hydraulic pump.
Otherwise, it won’t function effectively or even lead to problems like climbing ladders and deforming oil cylinders, among other things.
Supporting Device of Heavy Duty 3 Axle 4 Axle Lowbed Semi Trailer
The major components of the supporting device are the outriggers, outrigger connecting plates, and tension brace. When the semi-trailer is separated from the tractor, it is utilized to support the front load. Outriggers can be in two different forms: linkage and single action.
With regard to the gearbox, control crank, etc., the structure is essentially the same. To raise and lower the bearing device, turn the crank handle. Lithium-based grease should also be fed into the gearbox on a regular basis. The heavy-duty 3-axle or 4-axle low-bed semi-trailer must be position on a firm, level surface such as a concrete road once it has been empty.
On hills or slick mud roads, outriggers are not permit. The lifting height cannot be exceed by the outriggers. When the lifting height is insufficient, the base can be cushion by placing a conventional rectangular pillow block underneath.
Leaf Spring Bracket and Suspension of Heavy Duty 3 Axle Lowbed Semi Trailer
When the vehicle is in operation, the suspension should be routinely maintain, and the lubrication of every bolt that has to be tighten and the lubricating components should be check often.
Note: If the trailer has a lifting axle structure, it is not allow to lift when the vehicle is heavily load. The lifting axle can only be lift when the vehicle is empty.
Keep an eye on the axle’s U-bolts and tighten them to the recommended tension. Otherwise, distortion will occur as a result of looseness, an incorrect wheelbase, irregular tire wear, misaligned wear or damaged plate mirrors, and left and right axle deviation (particularly with air suspension axles). When the vehicle is highly laden, turning on the spot is prohibit because it might cause the vehicle to overturn or distort the leaf spring, tie rod, and steel.
Always check the air pressure sealing of the lifting system. There should be no air leakage. It is not allow to change the airline of the lifting system without permission. Otherwise, it will affect the lifting performance of the axle or the quality of the brakes.
Pre-tightening torque of each bolt
- Balance beam bolt: M30×2 through cotter pin, split
- Tie rod shaft nut: M14 170-180N.m
- Adjustable tie rod lock nut: M14 170-180N.m
- Plate spring stop bolt: M16 through cotter pin, split
- U-bolt: M24 x 2 600-650N. m