Custom Specialized Testing Machines Manufacturers

What are the main components of the anchorage test machine? What are their respective functions?

Loading system: core power mechanism
The loading system is the "heart" of the Anchorage Test Machine, responsible for simulating the pull-out load borne by the anchor in actual working conditions. According to different application requirements and force levels, the loading system usually adopts the following technical solutions:
Hydraulic loading system: The axial tension is generated by driving the cylinder piston through high-pressure hydraulic oil. The advantages are stable loading and high control accuracy, which is suitable for medium and high load test scenarios.
Electric servo loading system: Combining electric screw mechanism with high-precision servo control technology, it can realize precise control of loading speed, force and stroke, and is often used in scientific research laboratories where mechanical parameters are strictly required.
Zhejiang Yiyu Instruments is equipped with large-tonnage hydraulic systems and intelligent servo control solutions in different models of anchorage test machines, which can cover test requirements ranging from 10kN to 1000kN, meeting applications in multiple fields such as construction, tunnels, and bridges.
Reaction device: key support to ensure structural stability
Another core structure of the Anchorage Test Machine is the reaction system, which undertakes the task of force transmission in the opposite direction of the loading system, used to fix the equipment and withstand the huge reverse tension during the test.
The main forms include:
Reaction frame: Made of high-strength steel, connected to the foundation by bolts, can be adjusted according to different anchor spacing, with good adjustability and versatility.
Base fixing device: The equipment is firmly fixed on the concrete foundation by chemical anchor bolts or mechanical expansion bolts to ensure that there will be no offset or tilt during the entire loading process.
Our company's reaction system adopts a modular structure design, which is not only quick to install and easy to disassemble, but also can adapt to anchor bolt samples of different specifications and models, greatly improving the test flexibility and on-site adaptability.
Force value sensing system: the soul of accurate force measurement
Accuracy is an important indicator to measure the quality of an anchor test equipment. The accurate measurement of force value mainly depends on the high-precision tension sensor (Load Cell) system.
The sensors used by Yiyu Instruments are all industrial-grade resistance strain sensors, which have the characteristics of low linear error, good repeatability, and small temperature drift;
Force sensors can be customized according to the loading range, and conventional models support 0.5 or higher accuracy levels to ensure stable force output under different environments;
The data acquisition system also integrates overload protection and self-calibration functions to ensure that the entire test process is safe and controllable.
Displacement measurement system: synchronously record the entire deformation process
In addition to force, an equally important parameter in anchor testing is displacement (deformation), which is used to analyze the behavioral characteristics of anchors during force. Displacement measurement systems usually include:
Linear displacement sensor (LVDT): installed in the loading direction, real-time recording of the pull-out displacement of anchors during loading;
Graphic synchronization recording system: combining force curves and displacement curves to provide reliable data support for engineering analysis;
The displacement acquisition module used by Yiyu Instruments has the characteristics of high resolution and high sampling frequency, and is widely used in structural analysis and material performance research.
Data control system: intelligent management center
Anchorage Test Machine has long since gotten rid of traditional "mechanical" operation and integrated a highly intelligent control and data processing system:
Touch control panel or industrial computer terminal: to achieve accurate setting of parameters such as loading speed, test force, holding time, etc.;
Multi-function software platform: can realize multiple functions such as real-time data display, curve generation, automatic storage, report export, test playback, etc.;
Remote networking function: supports synchronization of test data to laboratory management system or enterprise cloud platform, which is convenient for centralized management and long-term traceability.
The data control system independently developed by Yiyu has functions such as Chinese and English interface switching, customized test process configuration, abnormal alarm prompts, etc., which improves the ease of use and intelligence level of the whole machine operation.
Auxiliary components and accessory systems: optimize experience and improve efficiency
In addition to the above core components, Anchorage Test Machine also includes the following auxiliary modules:
Replaceable fixture/anchor sleeve: adapt to anchors of different specifications and models;
Quick-connect hydraulic joint: improve on-site loading and unloading efficiency;
Protective cover and safety device: effectively avoid the risk of injury caused by splashing and misoperation;
Portable mobile wheel system (applicable to some small and medium-sized models): convenient for on-site commissioning and detection deployment.

What are the load accuracy and displacement accuracy of anchorage test machine?

What are load accuracy and displacement accuracy?
In the anchorage test, the equipment needs to accurately apply the specified pull-out load and simultaneously monitor the axial deformation (displacement) of the anchoring member during the force process. If the measurement error of load or displacement is too large, the test data will be distorted, which will affect the judgment of anchoring performance.
Load accuracy: indicates the degree of error between the measured value and the actual load when the equipment applies tension, usually expressed as a percentage of the maximum load.
Displacement accuracy: refers to the accuracy of the axial deformation data recorded by the displacement sensing system during the loading process, and the unit is usually micrometer (μm) or millimeter (mm).
Analysis of the load accuracy technology of Zhejiang Yiyu Instrument Anchorage Test Machine
The load measurement system of various models of Anchorage Test Machine produced by Zhejiang Yiyu Instrument adopts the world's leading strain gauge tension sensor (Load Cell), and is controlled by a high-performance digital signal processing module to achieve the following accuracy levels:
Load accuracy level: better than ±0.5% FS (full scale)
Fast response speed, with a sampling frequency of more than 1,000 Hz
Supports automatic switching of multiple ranges (such as 10%, 50%, 100% FS) to maintain high-precision range coverage
When designing the sensing system, Yiyu took into account the characteristics of frequent load changes and large amplitudes in the anchor test, and adopted high-sensitivity, low-hysteresis, and wide-temperature adaptability sensor elements, and factory-calibrated and temperature drift tested each device to ensure long-term stability of accuracy.
Displacement accuracy control scheme: synchronization, high sensitivity, and anti-interference
In terms of displacement measurement, Yiyu Anchorage Test Machine is equipped with imported LVDT linear differential transformers or high-precision photoelectric encoder systems as standard, which can achieve the following displacement measurement capabilities:
Displacement accuracy: better than ±0.5% FS or ±0.01 mm (depending on the model)
Minimum resolution can reach 0.001 mm (1 micron level)
Displacement and load data can be collected and analyzed synchronously to ensure accurate curve matching
In addition, in order to avoid environmental vibration, temperature and humidity fluctuations, and electromagnetic interference from interfering with the displacement signal, Yiyu has specially designed an independent signal shielding path and anti-interference filtering algorithm to ensure real-time performance while improving anti-noise capabilities. By reasonably arranging the sensor installation position and optimizing the structural design, the displacement measurement system can maintain excellent performance in various on-site environments, and is particularly suitable for evaluation of the anchoring performance of complex structures such as tunnel anchors, curtain wall anchors, and large steel structure node connectors.

What are the requirements for the foundation or ground for the installation of anchorage test machine?

Foundation stability is the primary prerequisite for installation.
Anchorage Test Machine is mainly used to apply axial tension and test the ultimate performance of anchors under stress. Since there is continuous and high-amplitude load transfer during the test, its installation foundation must have extremely high stability and seismic resistance. Usually, the equipment needs to be fixed on a concrete foundation platform that has passed the on-site strength test and meets the standards. The platform must meet the following conditions:
Concrete strength grade: not less than C30, C35 or above is recommended;
Platform thickness: not less than 300mm, the specific thickness is further evaluated based on the maximum load of the test;
Rebar layout: Bidirectional steel mesh needs to be reasonably laid inside the foundation to improve the overall crack resistance and bearing capacity;
Horizontal control: The foundation surface needs to be precisely leveled, and the error is controlled within the range of ±1mm/m to prevent the equipment base from being installed tilted, affecting the uniformity of force and measurement accuracy.
When delivering anchorage test equipment, Zhejiang Yiyu Instrument provides foundation design drawings and construction proposals to help customers efficiently complete the preliminary preparations and avoid affecting the performance of the whole machine due to foundation problems.
The bearing capacity of the ground cannot be ignored
When the Anchorage Test Machine performs a large-load anchor pull-out test, the reaction force between the equipment and the anchor member will be transmitted to the ground, so the bearing capacity of the ground is also an important consideration when installing the equipment.
For the laboratory or factory floor, it should be evaluated in advance whether its bearing capacity per square meter meets the requirement of ≥5000 kg/m²;
If the ground does not meet the requirements, it is recommended to excavate the old floor and re-cast the structural layer according to the standard to ensure that there is no foundation settlement or warping during the operation of the equipment;
For outdoor field test equipment, a special reaction frame system should be equipped, and thick steel plates or prefabricated concrete piers should be laid at the reaction support points to disperse the load.
Some portable anchor test equipment developed by Yiyu Instruments has a built-in rapid deployment reaction system, which can greatly reduce the dependence on the ground structure while meeting the bearing capacity, and is suitable for emergency detection, field construction and other environments.
Anchor point layout and connection method
The base of the Anchorage Test Machine is usually anchored with chemical anchor bolts or expansion bolts. Its layout and construction process also affect the safety of equipment operation:
Anchor bolt specification matching: select high-strength bolts of M20~M30 specifications according to the maximum test force;
Precisely control the drilling depth and hole diameter to avoid bolt pull-out or breakage due to shallow or offset holes;
For the construction of cast-in-place anchoring, it is necessary to wait for the curing time to be fully reached before installing the equipment to prevent slippage or rotation;
For this reason, Zhejiang Yiyu Instruments provides detailed installation guides and bolt configuration recommendations when the products leave the factory. Some high-end models can also choose modular embedded connectors to simplify the construction process and improve efficiency.
Grounding and safety protection cannot be ignored
Anchorage Test Machine is a high-voltage, high-load, and high-precision device. In daily use, the following auxiliary conditions should be noted:
Anti-vibration and shock-absorbing design: For sites near vibration sources (such as vibration platforms and forging workshops), it is recommended to install rubber pads or vibration isolation bases;
Grounding protection: The entire machine must be reliably grounded, and the grounding resistance should be less than 4Ω to avoid personal or equipment risks caused by power failure;
Environmental control: Avoid long-term exposure to moisture, corrosive gases or strong magnetic fields to ensure equipment accuracy and service life.
Zhejiang Yiyu Instrument adheres to the corporate philosophy of "quality first, service-oriented" and provides customers with integrated services from equipment selection, basic construction guidance, on-site installation and commissioning to subsequent training and maintenance to ensure that each anchor test equipment can perform stably in the optimal operating environment.