Introduction
The insulated hook block consists of insulated hook, insulated pulley set, pulley shaft, insulated crossbeam, insulated bearings, insulated housing and anti-fall device, specially designed for live working environments such as electrolysis and plating. The hook is forged from high-quality alloy steel, with surface coated with insulation layer or made of insulating material, reliable insulation performance; pulleys are made of insulating materials such as epoxy resin, nylon or MC nylon, with machined rope grooves, wear-resistant and insulating; crossbeam adopts high-strength alloy steel, with surface coated with insulation layer or installed with insulation pads, blocking current conduction; pins adopt insulating material or surface insulation treatment. During operation, the wire rope passes through the insulated pulley set, transmitting the lifting force to the insulated hook through the reeving mechanism to achieve heavy object lifting; the hook block is connected to the crane trolley frame through the insulated crossbeam, completely blocking the current conduction path from the hook to the crane, preventing current from live equipment such as electrolytic cells and plating tanks from conducting to the crane through the hook block and wire rope, causing equipment damage and personnel electric shock. The insulated hook block is equipped with an insulation resistance detection device, which can real-time monitor insulation performance; the hook is equipped with an anti-fall pawl to prevent accidental unhooking of slings; pulleys are equipped with anti-rope-off baffles to prevent wire rope. The insulated hook block is widely used in anode busbar lifting in electrolytic aluminum plants, cathode plate lifting in electrolytic copper plants, workpiece lifting in plating workshops, non-ferrous metal smelting, chemical live working and other occasions, serving as a safe special lifting device for heavy object lifting in environments with electric shock hazard.
Application
Our Advantage
Adopts full-path insulation design such as insulated pulleys, insulated hooks, insulated crossbeams and insulated pins, with insulation grade 1kV~10kV, completely blocking the current conduction path from the hook to the crane, preventing current from live equipment such as electrolytic cells and plating tanks from conducting to the crane through the hook block and wire rope, avoiding equipment damage and personnel electric shock, insulation performance far superior to ordinary hook blocks with simple insulation pads.
All components that may conduct current, such as hooks, pulleys, crossbeams, pins and bearings, are made of insulating materials or surface insulated, forming multiple insulation protection; equipped with an insulation resistance detection device, which can real-time monitor insulation performance and automatically alarm when insulation resistance drops, ensuring lifting safety in live working environments; safety factor ≥4 times, tested via 1.25× rated load static test, ensuring safe heavy-load lifting.
Pulleys are made of high-strength insulating materials such as epoxy resin and MC nylon, with precision-machined rope grooves, good fit with wire rope, stable operation, wear-resistant and durable, stable insulation performance; hook surface is coated with high-strength insulation layer, wear-resistant, aging-resistant and chemical corrosion-resistant; crossbeam insulation layer adopts high-temperature resistant and aging-resistant insulating material, normal service life over 5 years, suitable for continuous operation in harsh chemical environments such as electrolysis and plating.
The insulated hook block adopts modular design, insulating components are detachable and replaceable, convenient for maintenance; when insulating components such as pulleys, hooks and crossbeams are worn or the insulation layer is damaged, they can be replaced separately without overall scrapping, reducing maintenance cost; equipped with insulation detection interface, can regularly detect insulation resistance to ensure reliable insulation performance; overall compact structure and light weight, compatible with various tonnage bridge and gantry cranes.
Insulation grade 1kV~10kV optional, adapting to live working environments of different voltage levels; rated capacity 1t~50t wide coverage, can lift various heavy objects such as electrolytic aluminum anode busbars, electrolytic copper cathode plates, plating workpieces and chemical live equipment; can be used with various lifting equipment such as bridge cranes, gantry cranes and jib cranes, widely used in industries such as electrolytic aluminum, electrolytic copper, plating, non-ferrous metal smelting and chemical, serving as a professional safety sling for heavy object lifting in live working environments.
Specification
| Parameter | 1~5t | 10~20t | 32~50t |
| Rated Capacity | 1/2/3/5t | 10/16/20t | 32/50t |
| Insulation Grade | 1kV/3kV | 3kV/6kV | 6kV/10kV |
| Insulation Resistance | ≥1000MΩ | ≥1000MΩ | ≥1000MΩ |
| Number of Pulleys | 2 pcs | 4 pcs | 6~8 pcs |
| Reeving Ratio | 2 | 4 | 6~8 |
| Wire Rope Dia. | Φ11~Φ14mm | Φ14~Φ18mm | Φ18~Φ24mm |
| Pulley Dia. | Φ250~Φ350mm | Φ350~Φ500mm | Φ500~Φ710mm |
| Hook Type | single hook | single hook / double hook | double hook |
| Safety Factor | ≥4 | ≥4 | ≥4 |
| Pulley Material | Epoxy resin / MC nylon | Same as left | Same as left |
| Hook Insulation | Surface coated insulating layer | Same as left | Same as left |
| Crossbeam Insulation | Insulating pad + insulating layer | Same as left | Same as left |
| Pin Material | Insulating material / surface insulation treatment | Same as left | Same as left |
| Insulation Detection | Insulation resistance test interface | Same as left | Real time monitoring + alarm |
| Anti fall Device | Anti drop pawl + anti drop rope baffle | Same as left | Same as left |
| Weight | 0.1~0.4t | 0.4~1.2t | 1.2~3t |
| Applicable Crane | 1~20t crane | 20~50t crane | Crane above 50t |
