Standard strain direct shear apparatus - BZJ-2

A, summary:

BZJ-type 2 and strain direct shear apparatus used to measure the soil shear strength, in compressive strain state, without compression deformation with level to adjust.

Second, the main technical indexes

1. Shear box and inner diameter: Φ 61.8 mm.

2. Shear strain the handwheel displacement: 0.2 mm/circle.

3. To add lotus lever of force, leverage ratio, so, the method to force: 1.2 kN.

Three, use method

1. Shear box all add up to Φ 61.5 x 12.7 mm permeable ShiYi piece, outfit upload press the piston, will add lotus box beam in light put in the transmitting pressure on the piston. Visual basic level at lever. (farmar dish hanging in key axis).

2. Adjust the balance in a hammer to leverage from transmitting pressure piston (not contact the piston). In Jordan farmar and 24 g farmar, this time the leverage to preach a ruler to press the piston. Visual keep a tilt up leverage.

3. Shake the handwheel make shear box forward access to CeLiJi, a move that is stop centigrade meter pointer.

4. Put at the end of leverage, and the pressure from Hollywood box piston, on promoting seat.

5. Shear box inserted with two screw bolt, the beginning of the trial, should will screw bolt unscrew.

6. Shake the handwheel, each one round, push forward shaft 0.20 mm.

7. When the experiment is complete, add lotus box beam, the pressure on the piston contact screw and balance hammer does not need to adjust, just under unloading lever upwards from shear box can, take out samples, cleaning shear box to do the second test.

8. After using instruments, should clean dry, worm gear and worm note on rare butter, lever centripetal ball bearing on attention in oil. Keep shear box and bolt, shall not bending deformation.