Transfer Cart Rail Installation Method

1. Construction Preparation

Rail Material Selection

Select the appropriate rail type according to the transfer cart’s load capacity, operating speed, and working conditions. Common rail materials include light rails and heavy rails.

• For transfer carts with smaller loads and lower operating speeds, light steel rails can be used.

• For carts carrying heavier loads or operating frequently, heavy-duty rails are recommended.

Ensure the rail length meets the planned running route of the transfer cart and allow additional length for cutting and adjustment.

Accessories Preparation

Prepare all necessary rail installation accessories, including:

• Fishplates (rail joint plates) for connecting rails

• Rail spikes

• Bolts and nuts

• Washers

• Elastic pads

The fishplate model must match the rail specification. Rail spikes and bolts must have sufficient strength to withstand operational impact loads. Elastic pads help absorb shock and vibration, reducing wear between the rail and the foundation.

Tool Preparation

Prepare the required installation tools, such as:

• Measuring tape

• Level gauge

• Theodolite (for precise measurement of rail alignment and gradient if required)

• Wrenches and screwdrivers

• Rail cutting machine

• Drilling machine for bolt holes

Auxiliary tools may include rail handling equipment (such as trolleys or cranes for transporting heavy rails) and rail clamps for temporarily fixing rails during installation.

2. Foundation Preparation

Site Cleaning

Remove debris and obstacles from the installation area to ensure a clean working environment for rail installation.

Ground Treatment

For indoor concrete floors, ensure the surface is flat, solid, and free of significant cracks or depressions. If the surface does not meet the requirements, grinding, repair, or re-pouring of concrete may be necessary.

For outdoor installations, drainage must be considered. The rail foundation should be slightly higher than the surrounding ground and designed with a drainage slope to prevent water accumulation around the rails.

Marking Installation Positions

According to the planned travel route of the transfer cart, mark the center line and edge lines of the rails on the ground using chalk or other marking tools.

3. Rail Installation

Installation of the Starting Section

Begin installation from the starting end of the transfer cart travel route. Place the first rail section at the marked position and check both transverse and longitudinal levelness using a level gauge. If the rail is not level, adjust it by inserting shims beneath the rail. Ensure the starting point of the rail is accurately aligned with the loading/unloading positions or connecting equipment.

Rail Jointing

Connect the second rail section to the first using fishplates.

• Ensure the fishplates fit tightly against the rail.

• Tighten the bolts securely.

• Follow the correct tightening sequence: tighten the middle bolts first, then the bolts at both ends, ensuring even load distribution on the fishplate.

  
  

During installation, maintain a consistent rail gauge (distance between rails). This can be controlled using rail templates or specialized measuring tools.

For curved sections, rails must be laid according to the designed curve radius, ensuring smooth transitions without sharp bends or joint misalignment.

Rail Fixing

For light rails, rail spikes can be used to secure the rails to the foundation. Spikes should be driven vertically into the foundation at specified intervals (typically 500–800 mm, depending on rail type and usage requirements). The spike heads must firmly contact the rail to prevent loosening.

For heavy rails or applications requiring higher fixation strength, bolts are used. Pre-drill bolt holes in the rail base and install bolts through the rail and elastic pads, securing them to embedded components or anchor bolts in the foundation.

Use a torque wrench to tighten bolts according to the specified torque value to ensure reliable fastening. Ensure elastic pads are correctly installed to provide vibration and impact absorption.

4. Adjustment and Inspection

Levelness and Straightness Adjustment

After the rails are laid and initially fixed, perform detailed adjustments to ensure proper alignment. Use a level gauge and theodolite to measure different sections of the rails. If deviations are found, adjust by:

• Changing shim thickness

• Retightening bolts

• Slightly repositioning the rails

For straight rails, the straightness deviation within a certain length (e.g., every 10 m) should not exceed specified limits (e.g., ±2 mm). The height difference between adjacent rails should typically not exceed ±1 mm.

Gradient Adjustment

If the transfer cart route includes slopes, adjust the rail gradient accordingly. Use leveling and measuring instruments to accurately control the slope based on design requirements. The gradient must change smoothly and evenly to avoid sudden steep or gentle sections.

Special attention should be paid to ensuring smooth transitions at rail joints to prevent vibration or derailment when the cart passes through gradient changes.

Rail Surface Inspection

Check the rail surface for damage, cracks, deformation, or other defects.

• Burrs or protrusions should be ground smooth.

• Severely cracked or deformed rails must be replaced immediately.

Joint Inspection

Inspect all rail connections, including fishplates, bolts, and spikes, to ensure they are secure and show no signs of loosening or detachment.

5. Testing and Acceptance

No-Load Test

Before the electric transfer cart is put into operation, conduct a no-load test.

Run the cart slowly along the rails and observe its operation. Check for abnormal vibration, noise, or deviation from the track.

• If deviation occurs, inspect rail straightness and wheel alignment.

• If excessive vibration or noise occurs, check rail fixation and surface flatness.

Full-Load Test

After passing the no-load test, perform a full-load test.

Verify the rail system’s performance and safety under the maximum operating load of the transfer cart.

Conclusion

The installation of electric transfer cart rails should strictly follow the procedures of construction preparation, foundation preparation, rail installation, adjustment and inspection, and testing and acceptance to ensure high installation quality and safe operation of the transfer cart system.