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Microcomputer static load steel strand anchoring testing machine
This testing machine is specifically designed for static load anchoring performance testing of prestressed fixtures and anchors. It can detect the sta
Product details
Brand: Jiubin
3700mm×850mm×800mm
model: JB-4000、JB-5000、JB-6500
Name: Microcomputer Static Load Steel Strand Anchor Testing Machine
1、 Main purpose and scope of application：
This testing machine is specifically designed for static load anchoring performance testing of prestressed fixtures and anchors. It can detect the static load anchoring efficiency coefficient of steel strand anchor assemblies and the total strain when reaching the measured ultimate tensile force. This testing machine is mainly used in fixture and anchor production enterprises, highway construction, construction quality inspection stations and other units for quality inspection and scientific research. This testing machine is based on the enterprise standard Q/01JSJ050-2009 "Static Load Anchoring Testing Machine" of Jinan Touching Group Co., Ltd.
2、 Performance characteristics：
This machine is an integrated product of mechanical, electrical, hydraulic, and computer components. The main unit uses hydraulic loading to apply test force to the anchor components. The magnitude of the test force is measured by sensors, data is collected by measurement and control cards, and the test force and test curve are displayed on the computer screen. This machine can strictly follow the relevant provisions of national standards GB/T14370-2007 "Anchors, Fixtures, and Connectors for Prestressed Steel Strands", JT329.1-1997 "YM Anchors and Connectors Specification Series for Highway Bridge Prestressed Steel Strands", and JT329.2-1997 "Test Methods and Inspection Rules for Anchors and Connectors for Highway Bridge Prestressed Steel Strands" for quality inspection of anchors and fixtures. The electrical measurement and software data processing parts both adopt contemporary advanced technology, with a high level of technical expertise and stable and reliable product performance.
3、 Technical parameters：
Test force measurement:
Model specifications
JB-4000
JB-5000
JB-6500
Maximum test force
4000KN
5000KN
6500kN
Accuracy of experimental force
Within the measurement range, ± 1% of the indicated value
Displacement sensor
0-300mm
Indication accuracy
±1%
Piston stroke
200mm
Measurement range of piston displacement
200mm
Stretching distance (excluding piston stroke)
3400mm
Accuracy of piston displacement measurement
When it is less than 10mm, the absolute error is less than ± 0.5mm
When it is greater than 10mm, the relative error of the indication is less than ± 1%
Standard test pad specifications
YM15 series round anchors: 1, 3, 4, 5, 7, 9, 12, 14, 16 hole anchors, standard configuration includes 5 and 7 holes
YMB15 series flat anchor: 2, 3, 4, 5 hole anchors, standard configuration 5 holes.
Overall dimensions of the host
(Excluding piston stroke)
Host quality
About 6000kg
Total power of the power supply
6.5kW, three-phase four wire 380V
The maximum test force is attenuated in four levels: 1, 2, 5, and 10. The accuracy of the test force is within ± 1% of the displayed value, starting from 20% of the full range for each level.
Displacement measurement system:
The resolution of displacement measurement is 0 1mm.
Deformation measurement system:
Replace the deformation of the specimen with the displacement of the piston to calculate the total strain when measuring the ultimate tensile force, and measure the internal shrinkage of the steel strand and the displacement of the clamp with a caliper.
Control and Display System:
The data processing system of the testing machine consists of a PC, display and data processing software, multifunctional measurement card, and printer.
Working conditions:
1. Within the temperature range of 10 ° C to 35 ° C at room temperature;
2. Relative humidity ≤ 80%;
3. In an environment without vibration, corrosive media, or strong electromagnetic interference;
4. The variation of power supply voltage is within ± 10% of the rated voltage;
4、 Structural features and working principle：
1. Figure 1 is a schematic diagram of the overall appearance of the testing machine. The machine consists of a main unit, a measurement and control system, hydraulic tensioning equipment, and protective devices.
Figure 1 Schematic diagram of the overall appearance of the machine
1. Host 2 Protective sand box 3 Ultra high pressure electric oil pump 4 Computer measurement display system2. Host part:
Figure 2 is a schematic diagram of the host structure, consisting of a tensioning jack 1, a left crossbeam 2, a column 3, a protective device 4, a right crossbeam 5, a nut 6, a hollow sensor 7, and a piston displacement measurement device. The fixed frame is composed of the left crossbeam 2, the right crossbeam 5, four columns 3, and a fastening nut 6. The tensioning jack 1 and the hollow sensor 7 are respectively fixed on the left and right crossbeams. The fixed end of the piston displacement measuring device is connected to the left crossbeam, and the moving end is connected to the piston of the jack to measure the displacement of the piston.
Figure 2 Host Structure Diagram
1. Tensioning jack 2. Left crossbeam 3. Column 4. Protective cover 5. Right crossbeam 6. Tightening nut 7. Hollow sensor 8. Piston displacement measuring device
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