Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of 40'Semi-automatic Container Spreader in China. If you're going to buy custom 40'Semi-automatic Container Spreader made in China, welcome to get more information from our factory. For price consultation, contact us.
This 40' semi-automatic container spreader is a mechanical linkage spreader specifically designed for ISO standard 40-foot containers. Powered solely by the crane's lifting motion, it utilizes a precision linkage mechanism to automatically open and close the rotary lock, eliminating the need for external hydraulic or electric drives. Its robust structure and high reliability make it particularly suitable for ports, docks, railway freight stations, and container yards where safety, durability, and ease of maintenance are paramount.
Core Specifications for Reference
| Item | Data | Remark |
|---|---|---|
| Applicable container type | ISO standard 40' container | Conforms to International Organization for Standardization (ISO) standards. |
| Rated Lifting Capacity | 35t (40'Under spreader) | Meets the needs of heavy container lifting |
| Allowable Load Eccentricity | Length: 0.8m; Width: 0.26m | Effectively handles off-center loading conditions. |
| Rated Load of Lifting Lug | 10.5t × 4PCS | Strong single-point load-bearing capacity |
| System Self-weight | ≤4500 kg (Lifting gear + rigging) | Lightweight design reduces the ineffective load on cranes |
| Twist Lock Form | Mechanical linkage structure | Purely mechanical transmission, no hydraulic system required |
| Spreader Flipper Device | Non-powered detachable | Assisted box alignment, flexible operation |
Structural and Dimensional Details
40' Semi-automatic Container Spreaser's Lifting Gear Body
Structural Type: Utilizes a frame-type main beam + box-type end beam structure. This design not only ensures overall rigidity and effectively resists torsional deformation during lifting, but also possesses excellent fatigue resistance.
Center Distance of Locking Heads:
Length Direction: 11985 ±1.5 mm
Width Direction: 2259 ±1 mm
Overall Dimensions: Length 12185 mm × Width 2435 mm × Height 610 mm
Dead Weight: 3500 kg
Semi-automatic Container Spreader's Advantage
Purely Mechanical Transmission: Simple structure, extremely low failure rate, and maintenance costs far lower than hydraulic or electric spreaders.
High Adaptability: The floating turnlock design is compatible with slightly deformed older containers, improving operational success rates.
Safety Visibility: Dual indications-mechanical pointers and nighttime reflectors-ensure comprehensive operational safety.
Rugged and Durable: The box-beam structure, combined with high-strength steel, allows it to withstand harsh, high-frequency operating environments.
User-Friendly Details: Integrated forklift ports and wire rope storage racks facilitate on-site equipment management and relocation.
Basic Configuration List
To ensure the ready-to-use nature of the spreader, the standard delivery configuration includes the following core components:
Spreader Body: 40-foot container spreader (35t) - 1 set
Lifting Wire Rope: Steel core φ36mm × 8m.
Specifications: Equipped with a 36# swivel at one end (for connecting the spreader), and a 600-ring stop at the other end (for connecting the crane hook). - 4 pieces
High-Strength Shackles: 17t-grade high-strength shackles to ensure a safe and reliable connection point. - 4 pieces
Working Principles of the 40' Semi-automatic Container Spreader
1. Driving Principle: The lifting device is connected to the crane's lifting mechanism hook via a top lifting ring. Utilizing the lifting mechanism's up-and-down movement as the sole power source, a linkage mechanism drives the rope, converting vertical motion into rotational motion and precisely controlling the opening and closing of the turnlock.
2. Linkage Mechanism Operating Principle (Core Transmission): Triangular Plate Drive: The core of the mechanism is a triangular drive plate. Action Flow: When the lifting hook moves up and down, the spring and linkage drive the rope to move the guide block. The guide block slides within the triangular plate's groove, driving the plate to rotate precisely to ±90 °.
3. Operating Principle of the Turret Lock Mechanism (Actuator)
Container Landing Trigger: When the semi-automatic container spreader lands on the container, the four corner rods are compressed and floated (at this time, the turret lock is in a mechanical interlock state to prevent malfunction).
Rotational Transmission: The triangular plate in the linkage mechanism rotates ±90°, driving the connected drive linkage to rotate.
Actuation of Opening/Locking: The drive linkage drives the rotating arm, which, through the linkage mechanism, drives the rotating handle to rotate synchronously ±90°, ultimately driving the turret lock to rotate, locking or disengaging the lock head from the container corner fittings.
4. Suspension Support Method
This spreader uses a spherical support surface design:
Floating Function: The turret lock is supported by a spherical surface within a concave spherical surface, allowing free swinging within a certain range.
Advantages: This "floating" design of the container spreader not only ensures that the turret lock only bears pure tensile force during lifting, but also automatically fine-tunes the angle, making it easier for the lock head to insert into the slightly deformed container corner fitting holes, greatly improving container handling efficiency and adaptability.
5. Locking/Unlocking Indication System
To ensure ground personnel and drivers can clearly determine the lock status from a distance or in poor lighting conditions:
Mechanical Pointer: When the drive linkage rotates, it causes the locking/unlocking pointer to swing synchronously, visually displaying the "open" or "closed" status.
High Visibility Design:
A locking/unlocking indicator panel is added to a prominent position on the drive linkage.
The indicator panel is coated with a high-gloss reflective material (or a fluorescent color easily visible at night), ensuring accurate identification even at night or in poor lighting conditions using only a flashlight or dim light, preventing safety accidents caused by misjudgment.
6. Guide Plate Device
To assist the driver in quickly aligning with container corner fittings:
Type: Fixed, but supports manual disassembly/movement.
Quantity: 3 steel guide plates per spreader.
Specifications: Thickness ≥ 3 cm, length ≥ 0.9 m.
Function: The guide plates can be adjusted vertically to avoid damage from rigid collisions with obstacles.
Safety Measures: The spreader structure is designed with a reliable anti-detachment device to ensure that the steel guide plates will not accidentally fall off during use or movement.
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