5000kN electro-hydraulic servo compression-shear testing machine | Hard core equipment for quality inspection of bridge bearings, which can complete all mechanical tests of road and bridge in one stop.

Wanzhang Road and Bridge is based on bearings. The slab-type, basin-type and ball-type bearings of highway and railway bridges are the core components of bridge bearing, earthquake resistance and cushioning. The products must be subjected to a complete set of mechanical tests of compression, shear and rotation angle in strict accordance with the national standard before leaving the factory, re-inspection at the construction site and third-party inspection. In the past, multi-equipment split detection, manual data recording, poor loading accuracy and long test period made it difficult to balance detection efficiency and data accuracy. Jinan Liling YAW-5000J microcomputer controlled electro-hydraulic 500-ton compression-shear testing machine, vertical pressure+horizontal shear+corner composite loading integrated equipment, specially tailored for bridge bearing testing, one equipment covers all national standard testing items, and has become a standard quality inspection weapon for major testing centers, bearing manufacturers and university research institutes.

First, the national standard test of one machine with multiple functions and full coverage of bridge bearings
This machine strictly matches the full range of JT/T, TB/T, GB bridge bearing detection standards, and completes all core detection items in one stop without rotating multiple devices:
1. Test on compressive elastic modulus, ultimate compressive strength, shear elastic modulus and shear bonding performance of plate rubber bearing.
2. Test on vertical bearing capacity and friction coefficient of finished product of basin bearing.
3. Test on vertical bearing capacity, friction factor and rotation performance of spherical steel bearing.
4. Expand the experimental building isolation components, concrete samples, and various composite materials for compression-shear coupling mechanical tests.
Three-channel independent servo loading of the equipment, the maximum vertical test force is 5000kN, the transverse shear is 1000kN, and the rotation angle is 300kN, which completely reproduces the real composite stress conditions such as opening, settlement and earthquake of the bearing, completely solving the industry problem of detecting data distortion by single loading equipment.

Second, the high rigidity of the whole machine structure ensures the detection accuracy from the root.
1 Vertical main loading system
The whole machine adopts integral casting base and beam, and the layout of reinforcing ribs is optimized internally, which has high overall strength; The deformation of the frame is very small under the full load of 5000kN, which will not interfere with the accuracy of force measurement. It adopts four-column and four-screw lifting structure, and the 45# quenched and tempered precision screw is matched with high-grade ductile iron nut, which has strong durability after multiple heat treatments. The beam is lifted and lowered electrically, and the test space is 0-1000mm, which is stepless adjustment, and it is suitable for all kinds of large-size bearing samples. The main engine oil cylinder is designed downward, the inner hole of plunger oil cylinder is honed and finished, and it is equipped with imported two-stage composite seal, which has stable high pressure and no leakage after long-term use; It is equipped with a flush electric feeding trolley on the ground, and the heavy support does not need to be hoisted, and it can push and pull in and out of the test area with one button, which greatly reduces the manual handling workload.
2 Independent transverse shear unit
Equipped with special double-acting servo shearing oil cylinder, the shearing trolley is equipped with floating lifting oil cylinder, which can automatically adjust the height, ensure the complete alignment of the loading axis and eliminate the data error caused by eccentricity. Bilateral independent grating displacement sensors synchronously collect shear deformation, and the deformation measurement scale is 0.01mm, so that tiny displacement can be accurately captured. The shearing trolley moves back and forth electrically, and there is no need to manually move the cushion block, so the efficiency of batch inspection is greatly improved.
3 integrated corner test module
Built-in independent angle servo loading mechanism, with multi-channel grating deformation acquisition components, accurately measure the deflection stiffness and rotation performance of bearings, and meet the requirements of bridge anti-seismic special angle detection standards.

Third, energy-saving silent electro-hydraulic servo system, stable and low loss
The whole machine is equipped with Italian Mazuqi low-noise piston pump and ATOS high-precision servo valve, and adopts the industry advanced load adaptive throttle speed regulation hydraulic system:
1. The pressure is automatically matched and adjusted with the test load, and it runs at no-load and low pressure, which has obvious power saving and cooling effect compared with traditional hydraulic equipment;
2. Independent water cooling device, long-term continuous test oil temperature is controlled within 55℃ to avoid seal aging and data drift caused by high temperature;
3. The oil circuit is equipped with 5μm high-precision high-pressure filter to isolate impurities in the oil, protect the precision servo valve and prolong the service life of the whole machine;
4. The pipeline of the whole machine is equipped with a brand-new O-ring, which is strictly leak-checked before leaving the factory, and there is no oil leakage under long-term high-pressure conditions; 46# antiwear hydraulic oil is uniformly used in the equipment, and the maintenance is simple.

Fourth, MaxTest special measurement and control software, automatic national standard test process
Supporting the special MaxTest control system for bridge bearings, it is deeply adapted to all domestic road and bridge detection specifications, and zero-foundation operators can quickly get started:
1. A full set of national standard test procedures, such as plate compression, plate shear, basin vertical bearing capacity, ball friction and plate rotation angle, are preset, and the loading speed, preload times and holding time can be automatically matched by inputting the bearing size, without manual calculation of parameters;
2. Multi-mode closed-loop precise control supports automatic operation of constant-speed stress, constant-speed displacement, multi-stage pressure maintenance and cyclic preload, and the whole process is unattended after the test is started;
3. Real-time visualization of multi-type curves synchronously displays seven types of test curves, such as force-displacement, force-time and stress-strain, and supports curve scaling, screenshot and local archiving;
4. The standardized Excel automatic report has a built-in template corresponding to the national standard test record table. After the test, the key indicators such as elastic modulus, friction coefficient and deformation are automatically calculated, and the report can be exported and printed with one click. The data is complete and traceable, which fully meets the requirements of CMA laboratory audit.
5. The hierarchical authority management system distinguishes the authority of the operator and the administrator, and only the administrator can operate the equipment calibration and the bottom parameter setting, so as to avoid misoperation affecting the detection accuracy;
6. The supporting operation of wireless remote control comes standard with a handheld wireless remote controller, which can remotely control the lifting of the beam, the advance and retreat of the trolley, the start and stop of the oil cylinder, and the loading and unloading and equipment debugging do not need to go back and forth to the control cabinet, so the operation is safe and convenient.

Five, multiple safety protection mechanisms, peace of mind throughout the test.
The equipment is equipped with multi-layer interlocking protection to avoid the risks of overload, misoperation and equipment damage;
1. Force overload protection: when the load exceeds 2%-5% of the rated value, it will automatically stop and unload;
2. Full-stroke limit protection: the oil cylinder and cross beam automatically lock and stop when they run to the limit position;
3. Intelligent alarm of hydraulic system: automatic acousto-optic reminder of high oil temperature, low oil tank level and filter element blockage;
4. Double-end emergency stop device: the control cabinet and remote controller are equipped with emergency stop buttons, which can cut off the power with one button in case of emergency;
5. The strong and weak current separate control cabinet, and the operation panel is controlled by 24V weak current, which ensures the safety of operators' electricity consumption for long-term operation.

Sixth, adapt to various usage scenarios
Third-party engineering testing laboratories for highways and railways, rubber bearings for bridges and isolation bearings for buildings, quality inspection workshops for production enterprises, research and teaching laboratories for transportation and civil universities, and quality control centers for municipal and road and bridge construction groups.

Seven, one-stop supporting landing service
1. The equipment is separated from the factory, and the manufacturer's engineers come to complete assembly, leveling, pipeline wiring and calibration and debugging of the whole machine;
2. Provide a complete set of practical training for equipment hardware and software free of charge, including standard test procedures and daily maintenance teaching;
3. Lifelong remote technical support, rapid troubleshooting, and regular active return visits;
Complete delivery instruction, certificate of approval and packing list of equipment, and cooperate with equipment measurement and verification throughout.