ZYTJX-250 Hydraulic Rail Clamp | Crane Storm Windproof Safety Device

Product Overview

ZYTJX-250 hydraulic rail clamp is a fail-safe static safety clamping device, not used for dynamic service braking. Under normal standby or power-off conditions, the high-strength disc spring group automatically drives the clamp jaws to tightly grip the rail head, providing powerful and lasting anti-slip holding force to lock the crane firmly on the track.

When the crane needs to travel, the matched hydraulic station provides stable hydraulic pressure to push the piston, compress the disc springs and separate the clamp jaws from the rail. The rail clamp is fully released to allow free crane operation. Equipped with a built-in limit switch, it can feed back clamping and releasing signals in real time to realize electrical interlock protection and automatic system control.

Featuring wide rail compatibility, integral heavy-duty structure and stable holding performance, this rail clamp adapts to harsh outdoor working environments such as ports, mines and stockyards. It is a standard safety configuration for modern outdoor rail-mounted lifting equipment.

Core Features & Product Advantages

Fail-Safe Normally Closed Design: Disc spring automatic clamping when power or hydraulic pressure fails. It actively locks the rail in standby state, effectively resisting strong wind and storm impact to prevent crane drifting and runaway, meeting international outdoor crane safety standards.

Powerful 250kN Holding Force: Optimized disc spring combination and rigid jaw structure provide ultra-stable static clamping force, ensuring reliable windproof performance for medium and large rail cranes.

Wide Rail Compatibility: Universally adaptable to multiple standard crane rails including P50, P60, QU70, QU80, QU100 and QU120, with strong versatility and easy model matching.

Hydraulic Smooth Release: Matched with professional hydraulic station (3kW motor, 14MPa rated pressure), stable hydraulic output, fast and synchronous release action without jamming or delay.

Real-Time Signal Feedback: Built-in limit switch for clamping/releasing status monitoring, supporting remote signal transmission and electrical interlock to avoid misoperation and improve equipment automation safety.

Heavy-Duty & Weather Resistant: Thickened cast steel body and integral welding structure with anti-rust and anti-corrosion treatment, dustproof, waterproof and salt-spray resistant, suitable for long-term outdoor open-air service.

Wear-Resistant Clamp Jaws: High-hardness alloy clamping jaws with strong wear resistance and long service life, maintaining stable clamping friction without frequent replacement.

Low Maintenance & High Stability: Simple and reasonable mechanical structure, fewer vulnerable parts, no frequent debugging required, greatly reducing daily maintenance cost and downtime.

Wide Application Scope

ZYTJX-250 hydraulic rail clamp is specially used for windproof anti-slip locking and static parking protection of outdoor rail-mounted heavy machinery, widely applicable to:

Port rail-mounted gantry cranes (RMG) and container gantry cranes

Outdoor large gantry cranes, bridge cranes and travelling lifting equipment

Stacker-reclaimers, ship unloaders and bulk material handling machinery

Yard stockyard rail cranes and outdoor logistics handling equipment

Mining, chemical and construction outdoor fixed rail travelling machinery

All rail-mounted equipment requiring static storm anti-slip and safety parking locking

Detailed Technical Parameters

Working Principle

Hydraulic Release (Crane Running State)

When the rail crane needs to travel, the supporting hydraulic station is activated. The hydraulic oil pushes the piston to compress the preloaded disc spring group, driving the clamp jaws to separate from the rail head completely. The limit switch outputs a release signal to confirm the unlocked state. The rail clamp has no clamping resistance, allowing the crane to travel and operate freely.

Spring Clamping (Standby & Storm State)

When the crane stops working, or encounters power failure, hydraulic system failure and strong storm weather, the hydraulic pressure unloads instantly. The high-strength disc spring group releases elastic force rapidly to push the double clamp jaws to tightly grip the crane rail. A maximum 250kN stable static holding force is generated to lock the crane position firmly, completely eliminating safety risks such as equipment sliding, drifting and derailment caused by outdoor strong wind.