Heavy delivery | Jinan Liling LAW-1500L horizontal tensile testing machine was successfully supplied to Architectural Research Institute, consolidating the hard power of infrastructure scientific research and testing.

Recently, the LAW-1500L microcomputer-controlled electro-hydraulic servo horizontal tensile testing machine independently developed and produced by Jinan Liling Testing Machine Co., Ltd. completed the delivery, on-site installation, debugging and acceptance of the whole set of equipment, and officially settled in the Key Laboratory of Mechanics of well-known domestic architectural research institutes. The large-tonnage horizontal testing equipment will fully support the scientific research and test of the mechanical properties of building materials such as steel wire rope, steel strand, spreader, steel bar and cable, and provide a high-precision professional testing platform for the research and development of new materials for building engineering, engineering safety testing and verification of industry standards, marking that Jinan Liling's large-tonnage horizontal mechanical testing equipment technology has once again won the authoritative recognition of national building scientific research institutions.
Strict screening of scientific research equipment makes the scheme stand out.
This time, the Architectural Research Institute built a large-scale mechanical testing laboratory, and conducted multiple rounds of equipment technology comparison, field factory inspection and prototype performance benchmarking for national testing machine manufacturers, and conducted strict evaluation around five core dimensions: equipment load accuracy, long-term stability, test ability to adapt to various building components, software and hardware compliance, and customized supporting ability. The relevant person in charge of the Architectural Research Institute said: "The safety of the building structure is of great importance. The tensile test data of steel wire ropes, steel strands, lifting slings, bridge cables and other components directly determine the engineering design and acceptance standards. We have extremely high requirements for the force accuracy, overall rigidity and test compatibility of the testing machine. Jinan Liling LAW-1500L equipment fully meets the national standards of GB/T228.1-2021, GB/T8358-2023 and other complete sets of building materials testing. The whole process autonomous electro-hydraulic servo closed-loop control system, 5-meter ultra-long stretching space and multi-specification special test AIDS are a one-stop supporting scheme, which can completely cover the scientific research and testing needs of all building components in our hospital, and its comprehensive technical strength and customized service ability are superior to those of peers. Finally, cooperation is determined. "
LAW-1500L's core technical advantages are suitable for the whole scene of architectural scientific research.
The LAW-1500L 1500kN large-tonnage horizontal tensile testing machine delivered this time is a flagship horizontal testing equipment built by Jinan Liling for the fields of infrastructure, metallurgy and transportation scientific research and testing. A number of core technologies are specially designed for the optimization of building materials test scenarios:
Ultra-high-rigidity main engine structure, with minimal deformation in long-term test. The whole machine adopts thickened Q235 steel integral welding frame, and the oil cylinder seat and chuck body are all cast steel and stress-relieved by aging. Single-rod double-acting precision honing cylinder with spoke type high-precision sensor, the accuracy of load indication is better than 0.5%, the whole process has a constant resolution of 500,000 yards, and the full range of 2%~100% FS is used for accurate force measurement, which perfectly meets the requirements of long-term tensile scientific research and test of long-term and large-size building samples. The maximum stretching space of the main engine can reach 5 meters, and the test space with 800mm interval can be adjusted, which is suitable for all kinds of super-long steel strand and wire rope samples.
The fully closed-loop electro-hydraulic servo control system is equipped with a self-developed HTC-841B multi-channel servo controller with intelligent control during the test. The sampling frequency is up to 1000Hz, and the high-low pressure separated hydraulic oil source reduces the loading interference. The loading speed is infinitely adjustable from 0.5 kn/s to 50 kn/s, which supports multi-mode program-controlled tests of force control, displacement control and strain control. With STS2011 professional test software, various scientific research curves such as force-displacement, stress-strain, force-time can be generated in real time, tensile strength, yield force, elongation after fracture and other indicators can be automatically calculated, and standardized metal tensile test reports can be exported with one click. The data can be stored for a long time and counted in batches, meeting the data traceability requirements of scientific research papers, test reports and standard topics.
A complete set of standardized test AIDS covers all kinds of building sample equipment. Nine sets of special test AIDS are standard, which are compatible with the test of all kinds of building materials such as steel wire rope aluminum alloy pressed joints, inserted slings, bridge steel strands, welding chains, building steel bars, overhead insulated cables, port rings, etc., and completely match more than ten national standards for building materials testing, such as GB/T8919, GB/T26079 and GB/T16271, without additional procurement of fixtures.
Multi-layer safety protection system, which is suitable for scientific research high-frequency test and equipped with fully enclosed hydraulic automatic safety shield, 105% overload automatic stop, piston limit travel protection, sample fracture automatic stop, multiple early warning of oil temperature, liquid level and oil pressure, emergency stop button of control cabinet and other multi-layer safety devices; The running noise of the whole machine is less than or equal to ≤70dB, which is suitable for long-term high-frequency scientific research work in the laboratory, and supports wireless remote control operation, and the test operation is convenient and safe.
One-stop service in the whole process to ensure the rapid landing of scientific research platform
During the cooperation period, Jinan Liling set up a special technical service team to provide one-stop landing service for the whole chain, from the preliminary laboratory site planning, the issuance of equipment basic drawings, the design of 380V power supply supporting scheme, to the factory calibration of equipment, professional shockproof packaging, door-to-door hoisting in place, whole machine installation and leveling, sensor calibration, software debugging and special training for operators. In the equipment acceptance stage, the technical engineer completed the comparative test of several groups of standard samples on site, and the accuracy of force, displacement and speed control of the equipment all reached the standard. The operation engineer mastered the whole process of program-controlled test, curve analysis and report printing, and the whole set of equipment passed the comprehensive acceptance of the expert group of the research institute and immediately put into the scientific research work of mechanical properties of building materials.
Deepen Industry-University-Research's cooperation and help the high-quality development of infrastructure industry.
The equipment supply cooperation with Architectural Research Institute is an important milestone for Jinan to deeply cultivate the track of construction, transportation and metallurgical research and testing. Over the years, Jinan Liling has continuously focused on the research and development of large-tonnage horizontal and vertical mechanical test equipment, and its products have been widely used in major research institutes of building science, traffic inspection centers, material laboratories of universities and engineering quality inspection institutions in China, providing core equipment support for the research and development of new materials for domestic infrastructure, engineering safety assessment and industry standard formulation with self-controllable servo measurement and control technology, high-rigidity stable host and customized detection solutions.
In the future, Jinan Liling will continue to deepen its collaboration with Industry-University-Research of major architectural research institutes, rely on its own advantages in testing machine research and development, continue to iterate over large-tonnage, high-precision and intelligent mechanical testing equipment, and simultaneously optimize supporting test software and testing scheme, so as to help the domestic construction industry improve its scientific research and innovation capability and contribute to the safe development of infrastructure construction.