SU197417A1 - Device for measuring torque in driving screw anchors into soil - Google Patents

Description

Devices are known for measuring the torque when the screw cores are buried in the ground from the floating base with the rigging for the construction of predominantly bottom or shore supports of forest retaining and forest guiding structures.

The proposed device is made in the form of a pivotally mounted on the floating base of the telescopic rod. The upper link of the rod-pile is attached to the end of the buoyant base with the help of adjustable-length traction and a dynamometer, and the lower link rests on the ground during the measurement.

FIG. .1 shows the proposed device, a general view, and a floating base, side view; in fig. 2 is the main projection of the device; 1 to FIG. 3 - proposed device, VIEW from the side; EA of FIG. 4 is a diagram of the forces of “torques”.

The device consists of a trim 1, with a special winch 2 with a foot and manual drive 3 controls, a joint-supported unit 4, a telescopic rod-pile 5, a dynamometer 6, a pivot axle 7 and an emphasis limiter 8.

It is mounted on a floating base with 9 cantilevered overhangs (M 10 towards the side.

A block 4 is hinged on the cantilever arm, and a winch 2 is mounted on the bracket 11, the cargo 12 of which is fastened to the pro-nose 13 of the lower link of the rod-pile 5 by the second end.

Rod-pile consists of three links: the top link 14, the middle link 15 and the other link 16.

The link 14 with its lower part is hinged, but is attached in the trunnions 7 to the floating base 9, and the upper part - through the length 17 adjustable thru and the eye 18, through the dynamyometer 6 to the crosspiece 19 obstorish.

The link 14 is a guide link 15, which, in its turn, the possibility of vertical movement, is the guide link 16. The link 16 is provided with a cone 20 for better penetration into the ground 21.

Claims (1)

In order to prevent the compressive forces from being transferred to the dynamometer 6, an adjustable shor-stop 8 is mounted, the casing of which is fixedly mounted on the floating ground 9. The transport position is brought to the place where the screw core 22 is loaded. Link 16 15 telescolic rod-piles under the weight of its own weight fall to the bottom of the reservoir. In this case, the cone 20 of the star 16 enters the soil and forms the floating base of the machine in a certain position, which eliminates the need to fasten the machine with the soldering troos. The screw bark 22 is then put into action and buried in the ground. The reactive torque (Mrezkt) resulting from the resistance of the soil; the penetration of the core tends to p-turn the floating base of the machine in the direction of rotation of the machine. A ground bar connected to the ground prevents this machine from turning. The force resulting from the reactive moment is transmitted through the shaft, pile onto the dynamometer, and through the tuning to the floating base of the machine. The torque (L,. ,,) is measured using a dynamo meter by multiplying the acting force by the shoulder - the distance between the axle of the screw core 22 and the strap-pile 5. The dynamometer is tared directly to the readings of the torque moment, since the breed remains unmeasured for this type of machine. As the screw root penetrates into the passage of the screw blades of the soil layers, the torque moments characterizing the strength properties of the given soil layer will change accordingly. As a matter of 1M values of torques, the maximum depth of the screw cures is established. The magnitude of the holding core of the screw core is determined by the formula: p - UIx (0.54P - 1.23 I) D + (0 + d) where Afcr is the torque, moment developed during the depth of the screwbore 22; D is the outer diameter of the helical blade core bp 22; I is the depth of the crust and soil (determined by the risks of inventory pipe 23); d is the outer diameter of the inventory pipe of the tubular key for screwing the core. To facilitate the use of this formula on the scale di1n1mo, measure. Nearby torque values are applied for various diameters in (Korea). Apparatus for measuring the torque and the depth of the helical holes into the ground from the floating base with the setting at the time of construction) And) and predominantly 40 bottom OR or shore supports timber-holding and forest-directing structures, characterized in that it is made in the form of a telescopic shtaigi-pile, which is hingedly mounted on a floating base, the top link of which is and a dynamometer and secured to obstroyke floating base, and a lower link in vre th measurement rests on the ground. IS 23 2 / W. 15. 16 2nd ig.2 /