High-Precision PLC Hydraulic Synchronous Lifting System for Bridge Lifting & Heavy Equipment Positioning

Le PLC Single-Acting Pulse Width Control (MLI) Système de levage synchrone is an advanced electro-hydraulic lifting solution designed for high-precision synchronous lifting, abaissement, weighing, and positioning of heavy structures and equipment. Combining PLC intelligent control, pulse width modulation (MLI) technology, et pressure and displacement closed-loop feedback, the system ensures every hydraulic cylinder moves with exceptional accuracy while maintaining balanced load distribution.

Designed for demanding engineering projects, the system is widely used for bridge bearing replacement, bridge lifting, heavy equipment installation, structural jacking, infrastructure maintenance, and industrial lifting applications.

Disponible en 4-point, 8-point, 12-point, 16-point, and 24-point synchronization configurations, the system can be customized to meet different project requirements.

Caractéristiques clés

High-Precision Synchronous Lifting

Using advanced PLC control with pressure and displacement feedback, the system synchronizes multiple hydraulic cylinders with exceptional accuracy.

Les avantages incluent:

• Synchronous lifting and lowering
• Automatic load balancing
• Stable multi-point operation
• Accurate displacement control
• Improved operational safety

Displacement Accuracy: ≤0.2 mm

Synchronization Accuracy: ≤0.5 mm

PLC Intelligent Closed-Loop Control

The system continuously monitors cylinder displacement and hydraulic pressure through high-precision sensors. The PLC automatically adjusts oil flow to each cylinder, ensuring synchronized movement throughout the lifting process.

Les avantages incluent:

• Automatic correction of lifting differences
• Real-time monitoring
• Continuous closed-loop control
• High positioning accuracy
• Reduced operator intervention

MLI (Modulation de largeur d'impulsion) Flow Control

The hydraulic pump output is regulated using Modulation de largeur d'impulsion (MLI) technology, allowing precise adjustment of hydraulic flow according to the lifting requirements.

Compared with conventional hydraulic systems, PWM control provides:

• Faster system response
• Smooth lifting movement
• Reduced hydraulic shock
• Higher energy efficiency
• More stable operation

Automatic Pressure & Displacement Monitoring

Integrated pressure sensors and displacement transducers continuously monitor each lifting point.

The system automatically:

• Balances cylinder loads
• Corrects synchronization errors
• Protects against overload
• Maintains stable lifting performance
• Records lifting data for analysis

Human-Machine Interface (HMI)

A user-friendly touch-screen interface allows operators to monitor and control the entire lifting process.

Functions include:

• Real-time cylinder displacement
• Hydraulic pressure display
• Lifting speed adjustment
• System diagnostics
• Alarm monitoring
• Operating parameter settings

Safety Protection System

Multiple safety features ensure reliable operation during critical lifting projects.

Safety functions include:

• Overpressure protection
• Automatic alarm system
• Emergency stop
• Fault diagnosis
• Pressure monitoring
• Automatic synchronization correction

System Components

The PLC Synchronous Lifting System consists of:

• High-pressure hydraulic power unit
• PLC intelligent control cabinet
• Hydraulic control valve manifold
• Vérins hydrauliques simple effet
• Displacement sensors
• Pressure sensors
• Human-Machine Interface (HMI)
• Hydraulic hoses and quick couplers
• Electrical control system
• Alarm indicator system

Spécifications techniques

Item	Spécification
Control System	PLC Intelligent Control
Méthode de contrôle	Modulation de largeur d'impulsion (MLI)
Hydraulic Circuit	Pression & Displacement Closed Loop
Pression de service maximale	70 MPa (700 Bar)
Displacement Accuracy	≤0.2 mm
Synchronization Accuracy	≤0.5 mm
Tension de fonctionnement	AC 380V / 50Hz (Three-Phase Five-Wire)
Interface d'opération	Human-Machine Interface (HMI)
Alarm System	Audible & Visual Alarm
Type de cylindre	Vérin hydraulique à simple effet

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Available Models

Modèle	Synchronization Points	Puissance du moteur	Tension	Pression de service	Oil Tank Capacity	Dimensions (L × W × H)
KET-SHM-4	4 Points	2.2 kW	220V	70 MPa	130 L	780 × 680 × 1210 mm
KET-SHM-8	8 Points	2.2 kW	380V	70 MPa	130 L	780 × 680 × 1210 mm
KET-SHM-12	12 Points	2.2 kW	380V	70 MPa	130 L	780 × 680 × 1210 mm
KET-SHM-16	16 Points	5.5 kW	380V	70 MPa	200 L	780 × 680 × 1210 mm
KET-SHM-24	24 Points	5.5 kW	380V	70 MPa	200 L	800 × 750 × 1210 mm

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Applications

The PLC Hydraulic Synchronous Lifting System is widely used in heavy lifting and structural engineering projects, y compris:

Bridge Engineering

• Bridge bearing replacement
• Highway bridge lifting
• Flyover maintenance
• River bridge repair
• Bridge alignment
• Structural leveling

Heavy Equipment Installation

• Machinery positioning
• Industrial equipment installation
• Press installation
• Heavy machine relocation

Infrastructure Construction

• Building lifting
• Structural correction
• Foundation adjustment
• Tunnel engineering
• Steel structure installation

Energy & Industrial Projects

• Wind turbine installation
• Power plant maintenance
• Petrochemical equipment lifting
• Mining machinery maintenance
• Construction navale
• Offshore engineering

Avantages du produit

• PLC intelligent automatic control
• Modulation de largeur d'impulsion (MLI) technology
• Pressure and displacement closed-loop control
• Multi-point synchronous lifting
• Automatic load balancing
• Synchronization accuracy up to ≤0.5 mm
• Displacement accuracy up to ≤0.2 mm
• Maximum working pressure 70 MPa (700 Bar)
• Real-time monitoring and data display
• HMI touch-screen operation
• Multiple safety protection functions
• Suitable for complex heavy lifting projects
• Reliable and stable long-term performance

Why Choose Our PLC Synchronous Lifting Systems?

As a professional manufacturer of hydraulic lifting equipment and synchronized lifting systems, we provide complete lifting solutions for bridge construction companies, engineering contractors, industrial plants, and infrastructure projects worldwide.

Nos avantages incluent:

• Advanced PLC control technology
• Complete hydraulic system design
• OEM & Fabrication ODM
• Custom synchronization configurations
• Tarification directe en usine
• Contrôle de qualité strict
• Professional engineering support
• Installation guidance and technical training
• Global project experience

Each system is thoroughly tested before delivery to ensure exceptional accuracy, sécurité, and reliability in demanding lifting applications.

Foire aux questions (FAQ)

What is a PLC synchronous lifting system?

A PLC synchronous lifting system is an intelligent hydraulic lifting system that uses a programmable logic controller (API) to synchronize multiple hydraulic cylinders. It automatically controls cylinder movement to achieve precise lifting, abaissement, and load balancing.

What is Pulse Width Modulation (MLI) contrôle?

MLI (Modulation de largeur d'impulsion) is a control method that regulates hydraulic flow by adjusting the output of the hydraulic control valves. This enables smoother operation, higher positioning accuracy, faster response, and improved energy efficiency.

What is the synchronization accuracy?

The system provides synchronization accuracy of ≤0.5 mm, while cylinder displacement accuracy reaches ≤0.2 mm, making it suitable for high-precision lifting applications such as bridge bearing replacement.

What is the maximum working pressure?

The hydraulic system operates at a maximum working pressure of 70 MPa (700 Bar), providing sufficient power for demanding heavy lifting and positioning projects.

How many lifting points can the system control?

Standard models support:

• 4-synchronisation des points
• 8-synchronisation des points
• 12-synchronisation des points
• 16-synchronisation des points
• 24-synchronisation des points

Higher-capacity and fully customized multi-point systems are available upon request.

What types of hydraulic cylinders are compatible?

The system is designed for single-acting hydraulic cylinders, including ultra-low-height cylinders commonly used in bridge lifting and bearing replacement. Custom configurations can be developed for other cylinder types.

Can the system record lifting data?

Oui. The PLC system can monitor and record key operating parameters such as pressure, displacement, synchronization status, and alarms. Data logging and customized reporting functions are available based on project requirements.

Can the lifting system be customized?

Oui. We offer OEM and customized engineering solutions, y compris:

• Custom synchronization points
• Customized hydraulic power units
• PLC software programming
• Remote monitoring options
• Special control cabinets
• Multi-language HMI interfaces
• Project-specific hydraulic cylinders

What industries use synchronous lifting systems?

Our systems are widely used in:

• Bridge construction and maintenance
• Civil engineering
• Heavy equipment installation
• Exploitation minière
• Construction navale
• Huile & gaz
• Production d'énergie
• Steel structure construction
• Infrastructure maintenance
• Fabrication industrielle

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Do you provide technical support and commissioning?

Oui. We provide complete technical support, including equipment selection, system design, installation guidance, commissioning assistance, operator training, and after-sales service for projects worldwide.

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À la recherche d'un fiable PLC Hydraulic Synchronous Lifting System Manufacturer?

Contact us today for technical consultation, project support, Personnalisation OEM, et prix directs usine. Our engineering team can design a customized multi-point synchronous lifting solution to meet your bridge construction, infrastructure, or heavy industrial lifting requirements.