Product Introduction

Microcomputer controlManhole cover pressure testing machineThe host adopts a high stiffness structure to ensure safety during the testing process. An ultra precision oil filter is selected to ensure the cleanliness of the oil system and ensure the long-term operation of the control and execution components. Designed and manufactured according to industry or national standards such as CJ/T3012-1993 "Cast Iron Inspection Manhole Cover", CJ/T121-2000 "Recycled Resin Composite Material Inspection Manhole Cover", JC889-2001 "Steel Fiber Concrete Inspection Manhole Cover", GB/T 23858-2009 "Inspection Manhole Cover", etc., for testing the bearing capacity of manhole covers. Its structural performance fully meets the requirements of the test specifications. Users can program on site according to experimental needs, automatically closed-loop control, cyclic loading, loading speed, and loading waveform (as the standard loading process is a cyclic waveform loading process). In short, each indicator step of the national standard can be programmed, making the entire process fully automated without manual intervention.

Product images

Main Features：

1. The host adopts a high stiffness structure, with the loading cylinder placed below for easy access to the manhole cover test piece, ensuring safety during the testing process.

2. The rigid pad and the piston push out end are connected by a ball joint to ensure complete contact between the manhole cover and the reaction plate, ensuring the authenticity of the measured bearing capacity.

3. The oil cylinder and piston are sealed with special materials to achieve high sealing, low friction, and long service life.

4. Adopting a professional approachtesting machineOil pump motor assembly, low noise and long service life.

5. Select ultra precision oil filters to ensure the cleanliness of the oil system and ensure the long-term operation of control actuators.

6. Computer automatic control, real-time display of current force value, peak value, deformation, displacement and other experimental process information.

7. Real time recording of test curves and high-speed sampling during the experimental process;

8. The data and report processing function provides users with a specialized report editing tool for graphic layout, which has the characteristics of flexible operation and easy learning. It can conveniently print test curves and test values;

9. The control mode has control functions such as constant velocity stress, constant velocity test force, and test force maintenance, as well as screen display functions for test force, peak value, deformation, displacement, and test curve. The test curve has a force time curve, and the control mode smoothly transitions.

10. Users can program on site according to experimental needs, automatically closed-loop control, cyclic loading, loading speed, and loading waveform (as the standard loading process is a cyclic waveform loading process). In short, each indicator step of the national standard can be programmed, making the entire process fully automated without manual intervention.

11. The software is equipped with an automatic reset system for force values, eliminating factors such as human reading errors.

12. Equipped with overload protection, automatic unloading or stopping of the test.

13. Automatically collect and print reports on information such as destructive loads.

whole machine configuration
1Manhole cover pressure testing machine1 host
(Including: oil cylinder piston (downward), displacement gauge, force sensor, protective net)
2. 2 sets of rigid pads and rubber gaskets
（φ250*40，φ356*40）
3. Control one oil source
(Including: motor oil pump, servo control system, oil filter, several oil pipes)
4. Lenovo computer, 1 LCD monitor
5. 1 HP printer
6. 1 set of user manual, certificate of conformity, warranty card, packing list
7. 1 software installation CD

testing machineWorking conditions
1. Within the temperature range of 10 ℃ -35 ℃, the relative humidity should not exceed 80%;
2. Install correctly on a stable foundation, with a levelness of 1/1000;
3. In a vibration free environment, there are no corrosive media or electromagnetic field interference around;
4. The fluctuation range of the power supply voltage should not exceed ± 10% of the rated voltage;
5. The experimental electromechanical control cabinet should be reliably grounded.

Main technical parameters: