1. Container Positioning
Operation: The fully loaded ISO20 standard container is precisely placed into the container tilter's operating position using in-yard transport equipment (such as forklifts and reach stackers).
Equipment Status: The tipper platform is in its initial horizontal position, and the locking mechanism (torsion lock) is fully open and reset, ensuring unobstructed container entry.
Objective: To prepare for subsequent automatic clamping and tipping.
2. Positioning and Alignment
Operation: After the container is positioned, the container tilter activates its automatic alignment system. Using side guide plates, laser sensors, or mechanical limit devices, the container's position is finely adjusted to ensure its longitudinal and lateral centerlines precisely align with the tilting machine's rotation axis.
Purpose: To ensure uniform force distribution and a stable center of gravity on the container during tilting of the 20'container tilter for unloading, preventing equipment overload, structural stress concentration, or unexpected shaking due to uneven loading, is a crucial prerequisite for safe operation.
3. Twist Lock Clamping
Operation: After positioning, the four corner twist locks (or similar locking devices) on the top of the container tilter automatically extend and rotate under hydraulic or electric drive, securely locking into the four corner pieces at the bottom of the container.
Safety Confirmation: After locking is complete, sensors will send signals to the control system. The system will only proceed to the next step after receiving confirmation signals that all twist locks are "fully locked and under force," preventing accidental initiation of the tilting process in an unlocked state.
4. Tilting (to preset angle 0)
Operation: After safety confirmation, the main tilting mechanism (usually driven by a high-torque hydraulic motor or electric motor) is activated, causing the entire locking platform and container to rotate smoothly around the axis.
Angle Control: Rotate to the optimal unloading angle θ required by the drawings and processes (usually between 130° and 170°; the specific angle is determined according to the material characteristics). This action is precisely controlled by an encoder to ensure angle consistency.
Power Source: The tilting power is usually provided by a high-pressure hydraulic pump station driven by one or more motors, ensuring smooth and controllable operation.
5. Vibratory Unloading (Optional, activated based on material characteristics)
Operation: After the container is tilted to the target angle, if the material is highly adhesive and has poor flowability (e.g., wet material), the operator can activate the high-frequency vibrator.
Equipment Interaction: The vibrator (usually installed on the locking platform or container contact surface) operates briefly, generating high-frequency, low-amplitude vibrations to effectively break up material bridging, promoting thorough and rapid flow out of the container door by gravity.
Optional: For materials with good flowability, this step can be skipped, and static unloading can proceed directly.
6. Reset
Operation: After confirming that all materials have been unloaded, the container tilter's tilting mechanism smoothly reverses its direction, gradually returning the container from its tilted state to its initial horizontal position (0°).
Smoothness: The reset process also requires a controllable speed to avoid equipment impact or spillage of remaining materials due to rapid swinging.
7. Unlocking and Moving the Container
Operation: After the container is fully horizontally reset and comes to a stop, the torsion lock mechanism automatically rotates in the opposite direction and retracts, releasing the lock from the container corner fittings.
Completion and Transfer: The process ends after the control system receives a signal that all torsion locks are "fully unlocked and retracted." At this point, the empty container can be moved out of the workstation by the transport equipment, preparing for the next work cycle.x
