The Manhole Cover Compression Testing Machine is designed for testing the load-bearing capacity, strength, and deformation performance of manhole covers and gully gratings. It is widely used for cast iron, composite, steel fiber reinforced concrete, and polymer materials, and complies with international standards such as EN 124 and relevant ASTM/ISO requirements. The machine features precise hydraulic loading, computer-controlled operation, and accurate data acquisition, making it ideal for quality inspection laboratories, manufacturers, and research institutions.

Manhole Cover Compression Testing Machine

Model:TDJG-1000

I. Product Overview

This machine is designed and manufactured in accordance with industry and national standards, including CJ/T 3012-1993 “Cast Iron Manhole Covers”, CJ/T 121-2000 “Recycled Resin Composite Manhole Covers”, CJ/T 130-2001 “Recycled Resin Composite Gully Gratings”, CJ/T 212-2005 “Polymer-Based Composite Gully Gratings”, JC 889-2001 “Steel Fiber Reinforced Concrete Manhole Covers”, GB/T 23858-2009 “Manhole Covers”, and EN 124 “Gully tops and manhole tops for vehicular and pedestrian areas”.It is used for testing the load-bearing capacity of manhole covers, and its structural performance fully meets the requirements of relevant testing standards and specifications.

Note: HT material samples are only subjected to destructive testing; QT material samples or other composite materials are subjected to cyclic loading, deformation, and destructive tests.

II. Main Technical Parameters

1. Maximum Test Force: 1000kN

2. Effective Test Space: 1200mm×1200mm

3. Workbench Height: 300mm

4. Force Accuracy: ≤±1% (Better than Class 1)

5. Loading rate adjustment range: 0.1–30 kN/s

6. Deformation measurement range: 0–50 mm (optional)

7. Deformation measurement accuracy: 0.01 mm (computer data acquisition)

8. Piston stroke: 300 mm

9. Overload protection point: Automatic unloading at 2% beyond full scale capacity.

10. Load indication accuracy: 0.1 kN

11. Loading method: Electric hydraulic loading

12. Load control method: Computer-controlled and manual stepless speed regulation, with automatic programming function.

13. Hydraulic medium: No. 46 or No. 68 anti-wear hydraulic oil.

14. Commercial computer, A4 printer (Lenovo, HP, Dell, or equivalent brand)

15. Motor power: 2.2kW

16. Required voltage: 380V/220V

17. Main unit dimensions: Approximately 1800mm × 1500mm × 1600mm (L × W × H)

18. Main unit weight: Approximately 3500kg

III. Main Features

1. The main frame adopts a high-rigidity structure to ensure safety during the testing process.

2. The loading cylinder is mounted on the upper position, with a working table height of 360 mm, making it easy to place and remove manhole cover specimens.

3. A spherical hinge connection is adopted between the rigid pad and the piston end, ensuring full contact between the manhole cover and the reaction plate and guaranteeing the accuracy and reliability of the measured load-bearing capacity.

4. A special material seal is adopted between the cylinder and the piston, ensuring high sealing performance, low friction, and long service life.

5. A dedicated testing machine oil pump motor unit is used, featuring low noise and long service life.

6. An ultra-fine oil filter is adopted to ensure the cleanliness of the hydraulic system, thereby guaranteeing long-term stable operation of the control and actuating components.

7. Computer automatic control with real-time display of current force value, peak value, deformation, and test process information.

8. Real-time recording of test curves during the testing process with high-speed data sampling.

9. Data and report processing functions are provided, including a dedicated report editing tool with graphical layout, featuring flexible operation and ease of learning, which allows convenient printing of test curves and test results.

10. The control modes include constant stress, constant load, and load-holding functions, as well as on-screen display of test force, peak value, piston displacement, and test curves. The test curves include force-time, force-deformation, and deformation-time curves, with smooth switching between control modes.

11. Users can program on-site according to testing requirements, enabling automatic closed-loop control, cyclic loading, loading speed control, and loading waveform settings (since standard requirements define the loading process as a cyclic waveform). In summary, all standard test procedures can be programmed and automated, achieving full-process automatic operation without manual intervention.

12. The software features an automatic force value zeroing system, eliminating errors caused by inconsistent human readings.

13. Overload protection is provided; when the force or displacement exceeds the rated theoretical value of the testing machine, the machine automatically unloads or stops the test.

14. Automatic acquisition of failure load and deformation values, with report printing function.

IV. Machine Configuration

1. 1000 kN manhole cover compression testing machine main unit: 1 set

2. Residual deformation measurement device: 1 set

3. Load sensor: 1 unit

4. Rigid pads: 1 set

5. Control hydraulic power unit (including motor, oil pump, control valves, servo system, oil filter, and hydraulic hoses): 1 set

6. Computer: 1 set

7. Printer: 1 set

8. Dedicated measurement and control software: 1 set

9. Technical documentation: 1 set