JAW-1500KN lower hydrau-cylinder computerized manhole cover compression testing machine

The manhole cover compression testing machine can be used to test the compression properties( permanent set, load bearing capacity) of cast iron manhole cover, composite material manhole cover, and steel reinforced concrete.
The manhole cover compression testing machine adopts computerizing, high precision electro-hydraulic servo valve to drive precise hydraulic cylinder and then realize the auto control to the test force, displacement, and deformation, etc.

1. Introduction of testing machine

The manhole cover compression testing machine can be used to test the compression properties( permanent set, load bearing capacity) of cast iron manhole cover, composite material manhole cover, and steel reinforced concrete.

The manhole cover compression testing machine adopts computerizing, high precision electro-hydraulic servo valve to drive precise hydraulic cylinder and then realize the auto control to the test force, displacement, and deformation, etc.

 

2.test standard
BS EN 124 Gully tops and manhole tops for vehicular and pedestrian areas-Design requirements, type testing, marking, quality control

 

3. Main technical parameters of testing machine

No.

Item

Spec.

1

Max. test force

1500kN

2

Measuring   range

2%-100%FS

3

Precision

1%

4

Max.   Stroke of piston

300mm

5

Measuring range of deformation

0-20mm

6

Resolution   of deformation

0.01mm

7

Compression space

0-350mm

8

Diameter   of upper pressure head

250mm

9

Test space of working bench

1500X1500mm

10

Loading   speed

0.1-25KN/s

11

Protection functions

Auto stop while real force exceeds   2% to 5% of max, force

12

Voltage   and power

AC   220V/380V  50Hz

13

Dimension of control cabinet

1100X700X940mm`

14

Weight   of main machine

Around   3000kg