How to make a multi-functional turnover vehicle with three-generation lean tubes?

Below is the complete practical method for making a multi-functional turnover cart using three generations of lean tubes, suitable for material turnover scenarios in manufacturing workshops:

I. Preliminary Preparation Materials and Tools List

1. Third-generation lean tube (28mm specification recommended, select corresponding wall thickness as needed), dedicated aluminum alloy connectors, anti-static laminated board, silent polyurethane universal casters (with brakes), limit stop bars, positioning supports, matching screw hydraulic pipe cutting tools, marking pen, wrench, tape measure, aluminum alloy cleaner

2. Design Considerations

* Adopt modular design, reserve 20% load-bearing margin, adjust layer spacing as needed, adapt to different sizes of material storage
* Electronic workshop scenarios require dedicated anti-static connectors to form a complete grounding circuit, meet ESD industry standard
* Frame length, width, and height dimensions should be uniformly calibrated to avoid irregular deformation of subsequent structures

II. Step-by-Step Construction Process

1. First-Layer Frame Construction

* Start connecting from one end of the horizontal plane, ensuring that the length, width, and height of the first-layer lean tube are completely consistent, and build a stable bottom foundation structure
* Use a marking pen to mark the installation positions of the remaining layers on the frame columns, keeping the marking error within 5mm
* Assemble the frame layer by layer according to the marked positions, with the remaining short material length not shorter than 30mm, which can only be used for intermediate layer auxiliary support
* Ensure all tubes are fully inserted into the connector engagement positions, tighten the fixing screws one by one to avoid problems of inconsistent front and rear dimensions

2. Bottom Caster Installation

* Install universal casters at the corresponding position on the bottom of the frame, fully tighten the caster screws, and allow the rubber rings to fully expand and grip the inner wall of the tube
* Preferably use polyurethane casters with self-locking function, taking into account shock absorption, noise reduction, and conductivity requirements, adapting to high-frequency mobile scenarios in the workshop

3. Functional Component Addition

* Flip the frame over to check the structural stability, retighten all screws twice to avoid omissions and looseness
* Install layered tabletop panels, limit stop bars, and positioning supports, add handrails, material hooks, and other expansion accessories as needed

4. Final Debugging and Verification

* Push the turnover cart to test its smoothness of movement, check the stability of parking after locking the brakes
* Conduct full-load testing to check the deformation of the chassis, which should not exceed 2mm under qualified conditions
* Clean up aluminum scraps on the production site, wipe the surface of the third-generation lean tube with a dedicated cleaner to protect the oxide layer of the tube

III. Key Precautions

* After cutting the tube, the cut surface should face down to avoid aluminum scrap residue, and immediately install aluminum alloy covers to prevent corrosion and moisture of the cut surface
* In use scenarios, regularly check the sealing of the tube end covers to avoid moisture and rust inside the tube
* When idle, stack and store as needed to reduce space occupation, saving at least 10% of storage space cost compared to traditional carts