QYE Double-Trolley Insulated Overhead Crane

For electrically hazardous process areas that also need two lifting points for long, heavy or complex loads and require independent or coordinated trolley operation.

Double-Trolley Insulated Crane main product view

Henan Mine Crane qye double-trolley insulated crane showing the bridge crane and insulated lifting arrangement.

The QYE double-trolley insulated overhead crane combines electrical-isolation measures with two trolley systems on one bridge. The source states that it is designed for strong-current, high-temperature and corrosive environments and uses insulation pads, insulating sleeves and insulating plates at key crane interfaces.

The two trolleys can operate independently or together. For procurement, the buyer must define both the electrical-insulation requirement and the two-trolley lifting logic, including load geometry, lifting-point spacing, center of gravity and the allowable difference between the two lifting points.

Quick Specifications

Product Model	QYE
Type-Test Product Name	Insulated Overhead Crane
Lifting Mechanism	Two insulated trolley lifting systems
Lifting Capacity	Configured according to project requirements
Trolley Operation	Independent or combined operation (source-confirmed)
Span	Configured according to runway center distance
Lifting Height	Configured according to workshop / process requirements
Working Duty	Selected from load spectrum and operating frequency
Electrical Insulation	Configured according to project electrical and acceptance requirements
Control Method	Configured according to project requirements

Best For: For electrically hazardous process areas that also need two lifting points for long, heavy or complex loads and require independent or coordinated trolley operation.

Request A QYE Double-Trolley Insulated Crane Quote

Product Overview

The source positions the crane for strong-current, high-temperature and corrosive environments.

Double-trolley control uses encoders and CI-card inverter technology.

The two trolleys can be used independently or in combined operation.

For a new purchase, any capacity, span, speed, duty, insulation voltage or insulation-resistance value that is not published on the source page should be confirmed from the actual project instead of copied from a similar crane.

Why Choose QYE Double-Trolley Insulated Crane?

Two Trolleys for Complex Loads

Two lifting points support long, awkward or multi-point loads in electrically sensitive process areas.

Independent or Combined Operation

The source explicitly confirms that each trolley can work separately or the two can operate together.

Encoder / Inverter Coordination

Encoder and CI-card inverter technology are source-confirmed elements of the double-trolley control system.

Multi-Point Electrical Isolation

Insulation pads, sleeves and plates are used at critical crane interfaces.

Precise Motion Near Energized Equipment

Smooth speed control helps reduce swing and shock during tandem handling close to sensitive process equipment.

Product Images

Double-Trolley Insulated Crane product view 2

Additional source product image showing the QYE Double-Trolley Insulated Crane structure and lifting system.

Double-Trolley Insulated Crane product view 3

Additional source product image showing the QYE Double-Trolley Insulated Crane structure and lifting system.

Double-Trolley Insulated Crane industrial installation image 4

Source gallery image associated with the QYE Double-Trolley Insulated Crane product page, showing an insulated crane installation or industrial reference.

Main Crane Components

Bridge Structure	Overhead bridge carrying two trolley systems.
Two Insulated Trolleys	Two lifting points configured for independent or coordinated operation.
Encoder / CI-Card Inverter Control	Source-confirmed double-trolley control technology.
Insulation Pads	Electrical separation between lifting mechanisms at defined interfaces.
Insulating Sleeves & Plates	Electrical isolation at structural / mechanical connection points.
Precision Drive & Speed Control	Smooth positioning for individual and coordinated trolley movement.

Technical Parameters

Model	QYE
Product Type	QYE Double-Trolley Insulated Overhead Crane
Type-Test Product Name	Insulated Overhead Crane
Lifting Mechanism	Two insulated trolley lifting systems
Capacity	Project-specific
Span	Project-specific
Lifting Height	Project-specific
Hoisting / Travel Speed	Project-specific
Working Duty	Project-specific
Double-Trolley Control	Encoder + CI-card inverter technology (source-confirmed)
Trolley Operating Mode	Independent or combined operation (source-confirmed)
Insulation Points	Project-specific; source confirms pads, sleeves and plates at key interfaces
Insulation Test / Acceptance	Project-specific; buyer to provide standard and acceptance criteria
Control Method	Project-specific
Power Supply	According to site electrical conditions
Temperature / Corrosion Conditions	According to actual process environment

Source-Confirmed Features & Buyer-Defined Options

Source-confirmed product facts:

The source positions the crane for strong-current, high-temperature and corrosive environments.
Double-trolley control uses encoders and CI-card inverter technology.
The two trolleys can be used independently or in combined operation.
Insulation pads are installed between lifting mechanisms.
Connection areas use insulating sleeves and insulating plates, creating mechanical connection plus electrical isolation.
The insulation design is intended to prevent leakage current between the crane body and energized equipment in high-voltage environments.
High-precision drive and speed-control systems provide smooth motion and accurate positioning while reducing shock and sway.

Buyer-defined items for quotation:

Capacity and load type
Span and lifting height
Runway length / workshop layout
Electrical environment and energized-equipment locations
Load per trolley, lifting-point spacing and synchronization requirement
Required insulation points
Insulation test / acceptance requirement
Temperature and corrosion protection
Operating frequency and duty
Control method
Installation and commissioning scope

Application Scenarios

Long Loads Near Energized Equipment	Two-point lifting where electrical isolation is also required.
Electrically Sensitive Process Workshops	Complex lifting in strong-current industrial areas.
High-Temperature / Corrosive Process Areas	Double-trolley handling under the environmental conditions identified by the source.
Tandem Equipment Handling	Independent or coordinated lifting of long or large process components.

How to Select the Right QYE Double-Trolley Insulated Crane

1. Define the Electrical / Insulation Requirement

Provide system voltage, energized equipment locations, required insulation points and the applicable insulation test / acceptance criteria.

2. Define Total Load and Load Per Trolley

Provide the total suspended load and the maximum load each trolley may carry.

3. Provide Load Geometry and Center of Gravity

Long or uneven loads can create different loads on the two trolleys.

4. Define Lifting-Point Spacing

This determines trolley working range and tandem-lifting geometry.

5. Define Synchronization Requirement

State the allowable hook-height difference, load tilt or positioning tolerance during combined operation.

6. Confirm Temperature, Corrosion, Span and Height

Provide process environment and normal crane sizing data.

Electrical Insulation: What Buyers Must Confirm

System / process voltage and locations of energized equipment
Required isolation points between the load, lifting mechanism, trolley and crane structure
Applicable insulation-design / safety standard
Required insulation test method and acceptance criteria
Whether insulation performance must be verified at factory, after installation or both
Temperature, humidity, contamination and corrosion conditions that may affect insulation
Maintenance and periodic insulation-inspection requirements

Procurement note: The source confirms the insulation concept and insulating components, but it does not publish one universal insulation voltage, insulation resistance or test value. These requirements should be written into the technical agreement before manufacture.

Double-Trolley Lifting: What Buyers Must Confirm

Total Suspended Load	Include the load, rigging, lifting beam and both lifting interfaces.
Maximum Load Per Trolley	The two trolleys can see different loads because of center-of-gravity position.
Lifting-Point Spacing	Defines trolley travel range and tandem-lift geometry.
Allowable Hook-Height Difference	This should be stated by the buyer because the source does not publish one universal synchronization tolerance.
Independent / Combined Tasks	Define which process lifts use one trolley and which use both.
Control / Acceptance Logic	Define how combined trolley operation will be tested and accepted.

Safety & Control: What Buyers Should Confirm

Rated capacity and overload-protection requirements
Upper / lower hoisting and travel limits
Brake and emergency-stop requirements
Required electrical insulation points and isolation verification
Operator control method and visibility
Temperature / corrosion protection required by the process environment
Positioning, anti-collision or synchronization requirements where applicable
Factory / site acceptance and insulation test requirements

Installation & Maintenance

Before manufacture and installation, confirm runway span, rail / runway-beam condition, elevation, straightness, available headroom, electrical supply and erection access. The location of energized process equipment and all required insulation interfaces should also be fixed before final design.

Maintenance should follow the final supplied crane manual and plant electrical-safety procedures. In addition to normal inspection of hoisting mechanisms, brakes, ropes, wheels, drives and limits, the buyer should define periodic checks of insulation pads, insulating sleeves, insulating plates and any required insulation-performance tests.

What Information Do We Need for a Quote?

1	System voltage / electrical environment
2	Required insulation points
3	Insulation test / acceptance standard and criteria
4	Total maximum suspended load
5	Maximum load per trolley
6	Load dimensions / center of gravity
7	Lifting-point spacing
8	Required synchronization / allowable tilt
9	Span
10	Lifting height
11	Runway length
12	Temperature / corrosion conditions / workshop drawing / control method / destination

Frequently Asked Questions

Can the two trolleys operate independently?

Yes. The source explicitly states that the QYE trolleys can be used independently or in combined operation.

How are the two trolleys controlled?

The source states that encoder and CI-card inverter technology is used in the double-trolley control system.

What insulation measures are confirmed by the source?

Insulation pads are installed between lifting mechanisms, while insulating sleeves and insulating plates are used at connection points.

What synchronization accuracy is guaranteed?

The source page does not publish a universal synchronization tolerance. Buyers should state the allowable hook-height difference or load tilt in the project specification.

What electrical data is needed before quotation?

Provide the process voltage, energized-equipment locations, required isolation points and the insulation test / acceptance criteria.

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Request A QYE Double-Trolley Insulated Crane Quote

Send your electrical environment and insulation requirements together with lifting capacity, span, lifting height, runway length, workshop drawing, operating cycle and control requirements. Henan Mine Crane engineers will review the lifting duty, insulation interfaces and process environment before preparing a project-specific configuration and quotation.

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