Deeply cultivate the field of wind power fastener testing | Leading two large-scale high-strength bolt testing equipment to be heavily listed, covering all-dimensional performance testing of tension and torque.

In recent years, with the rapid development of wind power industry, super-large high-strength bolts for connecting tower and main engine are the core pressure-bearing components for safe operation of wind turbines, and their tensile mechanical properties, torque coefficient and axial force stability directly determine the service life of the whole machine. In view of the pain points of M33-M72 super-large high-strength bolts in the industry, Jinan Liling has newly launched two sets of professional testing equipment, namely HAW-5000L electro-hydraulic servo high-strength bolt tensile testing machine and LJZ-30000NZ wind power high-strength bolt torque detector, which can solve the mechanical testing problem of wind power high-strength bolt connection pairs in one stop, and help wind power parts to achieve standardized quality inspection and high precision landing.
1. HAW-5000L500KN Super-load Bolt Tensile Testing Machine: the core equipment for testing static mechanical properties.
Core advantages of products
This machine is a horizontal four-column frame structure with large rigidity, and the maximum test force can reach 5000kN. It is specially suitable for the tests of tensile failure, tensile strength and elongation after fracture of super-large tonnage high-strength bolts in wind power industry, and completely solves the industrial shortcomings that traditional small-scale equipment cannot cover M72 large-size bolts.
1. Wide adjustable stretching space, suitable for full-size bolts.
The stretching space supports 150mm-1000mm electric adjustment, and the travel of the beam is accurately adjusted by the ball screw, and the long and short bolts are universal; The total length of the whole machine is 3245mm, the shape of the main machine is 3500×1050×950mm, and the self-weight of the equipment is 6.2 tons. The high rigid fuselage prevents the test deformation from interfering with the measurement accuracy.
2. Full closed-loop electro-hydraulic servo measurement and control system, accurate and stable measurement.
Using high-precision load sensor, the test force measurement range is 2%~100%FS, the division value is 0.01kN, the resolution is 0.005kN, and the indication error is controlled within 1%; Equipped with 5000-wire cable encoder to collect displacement, real-time record the whole displacement of 0-1000mm, support the dual-mode program of force and displacement to load in stages, and customize the multi-stage test flow.
3. Supporting a full set of customized special AIDS, one-stop out-of-the-box use.
M33/M39/M42/M48/M56/M64/M72 full-specification bolt clamps, 4/6 wedge pads, flat pads and other tools are fully equipped at the factory, and no additional auxiliary tools are required. The test area is equipped with three safety protection nets as standard, with four safety protections: overload protection, upper and lower limit, automatic stop of sample fracture and emergency stop, so as to avoid the safety risk of heavy sample breakage.
4. Comply with the national standard of the whole industry and meet the acceptance of third-party laboratories.
The equipment strictly follows the general verification standards of testing machines such as GB/T2611, GB/T16826 and JJG157, and the test report issued can be directly used for ex-factory inspection of wind power components, third-party quality inspection and project supervision and acceptance; Supporting integrated control cabinet, computer, printer and control operation are integrated, and the operation process is simple and easy to understand.
Second, LJZ-30000NZ wind power high-strength bolt torque detector: special testing benchmark for torque coefficient and axial force.
Aiming at the detection requirements of torque coefficient and pre-tightening axial force of high-strength hexagonal bolt connection pair of wind power, LJZ-30000NZ horizontal torsion detector realizes synchronous acquisition of axial force and torque, which perfectly matches NB/T31082 special detection standard for wind power tower bolts.
Highlights of core products
1. Ultra-large torque range, covering a full range of bolts for wind power.
The torque detection range is 300~30000Nm, the axial force test range is 25~2500kN, and it is suitable for all high-strength bolts of M33-M72 and the length is 130 ~ 550 mm; Equipped with 5KW servo drive and high-precision torque and axial force sensors, the measurement accuracy of torque and axial force is 1% and the resolution is 0.5%.
2. Full-automatic intelligent detection, automatic data calculation and output.
The equipment automatically completes the whole process of bolt tightening, load protection and resetting, collects the torque-axial force synchronization curve in real time, and the software automatically calculates the key indexes such as average axial force, average torque, torque coefficient, standard deviation and variation coefficient. Built-in complete database supports one-click query, screening, export and printing of historical test data, and the report format conforms to the acceptance standard of steel structure engineering.
3. High-stability mechanical structure, durable and suitable for high-strength detection conditions.
The horizontal integrated base of the whole machine, the reducer, sensor and stretching mechanism are symmetrically arranged in the central axis, and the Taiwan Province silver linear guide rail is used to reduce the running friction; Full set of heat-treated alloy steel sleeve, anti-rotation baffle and clamping fixture are not easy to wear after long-term repeated high-strength loading, which greatly reduces the replacement cost of laboratory consumables.
4. Multi-standard compatibility, covering the full detection specification of wind power and steel structure.
It meets more than ten domestic and international standards for fasteners and wind power, such as GB/T32076.7, NB/T31082, GB50205 and ISO16047, and is widely used in wind turbine tower manufacturers, steel structure engineering enterprises, third-party material testing institutions and laboratories of scientific research institutions.
Third, complete laboratory solutions, one-stop supporting landing
Jinan Liling can provide customers with two sets of equipment integrated laboratory supporting plans, and unify and standardize supporting parameters:
| Supporting projects | Unified technical requirements |
| Power supply conditions | tn-s 380V industrial power supply |
Environmental requirements | Room temperature 10~35℃, humidity ≤80%, no vibration, no strong electromagnetic interference |
| Weight of equipment | 6.2 tons of tension machine and 5 tons of torque detector |
| Noise control | The running noise of the whole machine is ≤60dB, which meets the requirements of laboratory silence |
Equipment factory includes complete spare parts package, installation and debugging tools, original operating instructions and equipment certificate; The manufacturer provides after-sales service in the whole process of door-to-door installation, equipment calibration, personnel operation training and lifetime free software upgrade to solve the worries of customers' equipment landing.
Fourth, the industry application value
As the key fastener of wind turbine, the high-strength bolts of wind turbine will easily lead to major safety accidents such as tower looseness and fracture once the torque coefficient and tensile performance are not up to standard. The two sets of testing equipment form a closed loop for complete testing of tensile mechanical properties and torque pre-tightening, which helps enterprises to achieve full coverage of incoming inspection, self-inspection of finished products and third-party type tests, control the product quality of wind power components from the source, and help the high-quality and safe development of wind power industry.
Jinan Liling has been deeply involved in the research, development and manufacture of mechanical testing equipment for materials for more than ten years, continuously focusing on the detection of high-end fasteners in wind power, steel structure and rail transit, and relying on independent electro-hydraulic servo measurement and control technology and full set of customized chemical equipment development capabilities, it can provide customized testing equipment solutions for laboratories and manufacturing enterprises of different scales. In the future, enterprises will continue to iterate over-load and multi-channel automatic testing equipment to provide reliable hardware support for quality control of high-end parts of new energy.
If you need equipment sample testing, on-site scheme survey and detailed consultation of technical parameters, you can contact Jinan Liling Technical Service Team to get a one-to-one exclusive solution.
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