Hydraulic squeeze-load test machines for applying prescribed lateral compressive loads to freight wagon bodies and container flats during periodic overhaul inspections — validating structural integrity and weld quality to IRS standards.
Applicable Standards
M-WSL Series
Freight wagons undergo severe lateral and longitudinal loads during service — from shunting impacts, curve negotiation, and payload shifts. IRS wagon codes mandate periodic squeeze-load testing during POH (Periodic Overhaul) to verify that the wagon body, underframe, and weld joints retain their structural integrity.
The M-WSL series applies controlled lateral compressive loads via hydraulic rams while monitoring deflection at multiple points. Pressure-hold testing detects weld cracking under sustained load — the primary failure mode in aging freight wagon fleets.
Capabilities
Complete structural assessment for freight wagons during periodic overhaul — lateral, vertical, and end-wall loading.
Applies prescribed lateral compressive force across the wagon body via hydraulic rams. Measures deflection at multiple points to detect structural weakness, weld cracking, and loss of section integrity.
Applies diagonal tensile loads between diagonally opposite corners of the wagon body. Checks racking stiffness and detects loosened or cracked gusset joints in the underframe.
Uniformly distributed vertical load on the wagon roof structure to verify that roof bows, carlines, and roof sheets can withstand maintenance personnel loading and snow/ice accumulation.
Concentrated and distributed loads applied to the wagon floor to verify strength of cross-bearers, sole bars, and floor plates under design payload conditions.
Horizontal force applied to the wagon end wall to simulate buffing loads during shunting and train marshalling. Validates end-wall stiffness and headstock joint integrity.
Sustained pressure-hold at design load with deflection monitored over time. Creep or sudden deflection increase indicates weld cracking — the primary failure mode detected during periodic overhaul.
Technical Data
| Parameter | Value |
|---|---|
| Lateral Squeeze Load | Up to 200 kN |
| Vertical Load (Roof/Floor) | Up to 100 kN (optional) |
| End Wall Push Load | Up to 150 kN (optional) |
| Hydraulic Cylinder Stroke | Up to 300 mm |
| Pressure-Hold Duration | 30 – 300 seconds (programmable) |
| Load Cell Accuracy | ±0.5% FSR (Class 1) |
| Displacement Measurement | LVDT, ±0.1 mm resolution |
| Hydraulic Pump | Electric, 10 – 30 kW |
| Maximum Working Pressure | 350 bar |
| Frame Clearance (wagon width) | Up to 3,500 mm |
| Control System | PLC with HMI touchscreen |
| Power Supply | 3-phase, 415 V, 50 Hz |
Specifications subject to change. Custom frame sizes and load capacities available for specific wagon types.
Standard Equipment
Heavy-duty hydraulic rams with hardened platen faces apply uniform lateral pressure across the full height of the wagon side wall — eliminating localised stress concentrations.
Programmable hold duration (30–300 seconds) at design load. System monitors deflection continuously — any creep beyond IRS limits triggers automatic pass/fail flagging.
Up to 8 LVDT channels record deflection at side walls, sole bars, headstocks, and roof simultaneously — providing a complete picture of structural response.
Industrial PLC with HMI touchscreen for test setup, load ramping, hold timing, and data logging. Reduces operator skill requirement for repeatable, standard-compliant testing.
Auto-generated test certificates per IRS wagon codes. Reports include load-deflection curves, hold-time graphs, and pass/fail verdicts — ready for workshop inspection records.
Fabricated steel frame designed for daily use in carriage-and-wagon workshops. Heavy-duty guide rails, anti-vibration mounts, and corrosion-resistant hydraulic components.
What's Included
After Sales
On-site and in-house calibration of testing machines and sensors
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Application engineering, test method development, and lab planning
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Safe disassembly, transport, and re-commissioning of testing machines
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Modernise legacy or imported test rigs with new controls and sensors
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Annual maintenance contracts (AMC) for all testing machines
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Tell us your wagon types, load requirements, and workshop layout — our engineers will design the right M-WSL system for your periodic overhaul line.
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