Manhole Cover Pressure Fatigue Test Crack Measurement Test Machine, Manhole Cover Cyclic Load Test Machine

Ductile Iron Manhole Cover Pressure Fatigue Test Machine Crack Load Test

Manhole Cover Fatigue Resistance, Load-Bearing Capacity, Residual Deformation Performance Testing

I. Equipment Introduction

The manhole cover dynamic fatigue testing machine is used for static anti-fatigue testing and research on various types of inspection manhole covers, trench covers, manhole covers, water grates, drainage plates, steel grating, grids, and frames. By applying a certain pressure and number of cycles to the manhole cover, it simulates the pressure from vehicles and pedestrians that the manhole cover bears in actual use, thereby evaluating the mechanical properties and durability of the manhole cover under cyclic loading.

Related Standards:

GB/T 23858-2009 "Inspection Manhole Covers"

CJ/T121-2000 "Recycled Resin Composite Inspection Manhole Covers"

CJ/T211-2005 "Polymer Matrix Composite Inspection Manhole Covers"

CJ/T327-2010 "Ductile Iron Composite Resin Inspection Manhole Covers"

JC889-2001 "Steel Fiber Reinforced Concrete Inspection Manhole Covers"

II. Equipment Features:

1. Multiple Testing Functions: Capable of performing dynamic fatigue tests, triangular waveform variable load fatigue tests, static pressure resistance tests, load-bearing capacity tests, residual deformation tests, etc., for various types of inspection manhole covers, trench covers, etc.

2. Precise Control and Measurement: Features multiple control methods such as load, displacement, strain, and computational functions, enabling precise control of the testing process and real-time measurement and recording of relevant data. Equipped with a high-resolution camera for crack detection in specimens, with computer real-time monitoring, observation, dynamic display, collection, and processing of crack conditions.

3. Comprehensive Safety Protection: Includes various protection functions, such as automatic shutdown when exceeding a certain percentage of the maximum test force, cylinder limit protection, hydraulic system overload relief protection, etc., ensuring test safety.

III. Main Technical Parameters

Maximum Test Load: 600kN/1000KN optional;

Load Cycle Frequency: 0.1Hz~5Hz (adjustable);

Load Waveform: Sine wave, square wave, triangular wave, etc., commonly using sine wave to simulate dynamic loads;

Effective Test Space: 1500mm x 1500mm;

Workbench Height: 500mm;

Force Accuracy: ≤±1% (better than Grade 1);

Loading Speed Adjustment Range: 0.1~25KN/s (automatic stepless speed regulation);

Piston Stroke: 350mm;

Load Indication Accuracy: 0.1KN;

Voltage: 380V/220V, 0.75KW;

Main Unit Dimensions: Approximately 1900x1500x1600mm;

Main Unit Weight: Approximately 3100Kg;

Overload Protection Point: Automatic unloading when exceeding 3% of full scale;

Test Cycle Setting: Pre-set number of cycles;

IV. About the Test Method