Shanghai ENJUE Machinery Equipment Co., Ltd is one of the most experienced manufacturers and suppliers of wireless remote control grabs in China. If you're going to buy custom wireless remote control grabs made in China, welcome to get more information from our factory. For price consultation, contact us.
In the field of bulk cargo handling, wireless remote-controlled grabs are gradually becoming the most favored handling tools in the shipping market. This product covers a volume range of 2 to 50 cubic meters and can flexibly adapt to the different operational needs of everything from small barges to large bulk carriers. Compared with traditional electro-hydraulic grabs, its greatest advantage is that it is completely independent of the crane itself - no need to add any auxiliary cables, slip rings, or additional power systems to the crane; it is ready to use immediately, significantly reducing equipment modification costs.
Core Technology Principles
This grab bucket uses a composite working logic of mechanical locking and hydraulic remote-controlled opening:
Closing Action (No Remote Control Required)
When the crane lowers the grab bucket onto the material surface and continues to lift the hoist wire rope, the rope tension is transmitted to the bucket via the linkage mechanism at the top of the grab. This tension forces the bucket to close, completing the material grasp. The closing process relies entirely on the crane's original lifting action and does not consume battery power.
Opening Action (One-Button Remote Control)
After the operator presses the open button on the transmitter (hand-held remote unit), the signal is sent via the receiver (effective distance 100 meters) to the hydraulic integrated block inside the grab bucket. The solenoid directional valve acts instantly, releasing the hydraulic lock of the cylinder. At this point, under the combined effect of the material's own weight and the grab bucket's weight, the cylinder piston rod naturally extends, pushing the bucket open and releasing the material.
Core Advantages and Highlights
Plug and Play, No Modification Needed
Whether it's a gantry crane, tower crane, ship crane, or crawler crane, as long as it has a standard hook, this grab bucket can be mounted directly. There is no need to configure cable reels, motors, slip rings, or external power for the crane, eliminating complex electrical modifications.
Fully Hydraulic Lock, Leak-Proof and Safe
Equipped with a built-in hydraulic locking cylinder, during the gripping and lifting process, even if the remote control loses power or the signal is interrupted, the hydraulic lock still maintains the mechanical hold, ensuring materials do not accidentally fall. Unlocking is controlled only by the remote control, combining reliability and safety.
Long Battery Life, Suitable for All-Day Operation
Equipped with a 24V/30Ah high-capacity lithium battery, a full charge allows continuous operation for 100 hours (equivalent to approximately 12-15 regular workdays). Battery replacement is simple and quick, with no external charging cables required.
Remote Control up to 100 Meters, Flexible Viewing
The receiver and controller have an effective range of 100 meters, allowing the operator to stay away from directly beneath the grab bucket and choose the best safety viewpoint for loading and unloading, especially suitable for complex conditions inside ship holds or stockyards.
Self-Circulating Hydraulic System, Maintenance-Free
The cylinder uses a closed hydraulic fluid circulation internally, requiring no external power station or oil lines. The system is simple with very few points of failure, with daily maintenance only needing checks of the battery charge and hydraulic oil level.
Main tech Specifications for reference
| Item | Details |
|---|---|
| Volume Range | 2 – 50 m³ |
| Control Method | Wireless Remote Control (Transmitter + Receiver) |
| Remote Control Distance | ≥100 米(Spacious and Unobstructed) |
| Battery Type | Lithium Battery |
| Battery Specifications | 24V / 30Ah |
| Continuous Working Duration | 100 小时(Fully Charged) |
| Closed-Loop Drive | Crane Hoisting Rope Tension (Mechanical Type) |
| Open Drive | Battery-Powered + Remote-Triggered Hydraulic Lock Release (Gravity/Material Self-Weight) |
| Applicable Crane Types | Any lifting equipment equipped with a hook |
Workflow Diagram
Mounting: The clamshell bucket is connected to the crane hook via lifting lugs, and the receiver and battery unit are in place.
Lowering: The crane lowers the opened clamshell bucket to the surface of the material.
Closing and Grabbing: The operator commands lifting, and the rope tension causes the bucket to automatically close and grab the material.
Hoisting and Transporting: The hydraulic lock maintains the closed state, and the clamshell bucket moves with the crane to the discharge point.
Remote Opening: Press the remote control open button → Solenoid valve activates → Hydraulic lock releases → Piston rod extends → Bucket opens to discharge material.
Cycle: Repeat steps 2-5.
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