SU1579969A1 - Device for making borehole with spread under pile support - Google Patents

Abstract

The invention relates to foundation engineering, primarily in industrial construction. The goal is to expand the technological capabilities of the device by providing formation or broadening at the wellhead. A device for forming a well with a widening under the pile-support includes a drilling unit with a guide column, a drive, a drill rod and a screw, a roller spreader, an anchor structure consisting of anchors, a screw coupling and a yoke and a screw and a hollow body adapted for displacement in it and fixation roller wider. 7 il.

Description

The invention relates to foundation engineering primarily in industrial construction.

The purpose of the invention is to expand the technological capabilities of the device by ensuring the formation of a broadening at the wellhead.

1 shows a device for forming a well under a pile support, a general view; in fig. 2 - section AA on phi .; on fig.Z - roller spreader (dotted line shows the broadening at the wellhead, formed by roller spreader); in FIG. 4, node I in FIG. 3; figure 5 - node II in figure 1; figure 6 - section bb in figure 4; 7 - section bb In fig.Z; on Fig - node W on fig.Z; figure 9 - section GG in Fig, 7; figure 10 is a cross section dD in figure 7; in fig. 11 - unit IV on fig.Z; Fig, 12 - section EE of Fig.11.

A device for forming a well with broadening under a pile support includes a drilling unit 1 with a guide column 2, a drive 3, a drill rod 4, and also a roller spreader 5, an anchor structure 6 and a screw coupling 7. The roller spreader 5 includes upper shoes 8, lower shoes 9, mounted on bearings on the housing 10. To the last, the knives 11 and 12 are hinged, the drum 13 is radially rotatable from the hydraulic actuator, assembled into the housing 10. The anchor design 6 includes

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housing 14, brackets 15 and 16, anchors 17; Bracket 15 includes a housing 18 adapted to be mounted to the guide column 2. A housing 19 mounted on the housing 18 is axially displaceable with a screw 20. A journal 21 is mounted in the holder 19 hinged to the housing 14. The latter is made with sections 22 mounted on hinges 23 arranged in an axial plane for opening the housing 14, which makes it possible to mount the anchor structure 6 and the roller expander 5 in their horizontal position and simplifies installation in a vertical position. The brackets 16 are connected to the anchors 17 by means of screws 24 to enable them to be axially displaced when mounted in an operating position. The anchors 17 comprise a housing 25, to which the hinges 26 are suspended by an annular contour, which are arranged to radially displace due to the arrangement of their axes 27 in oval holes 28. In the housing 25 a rod 29 with bearings 30 and 31 is mounted, on which are spaced the hinges 32 and 33, the latter in contact with the wedge-shaped surfaces 34 and 35, respectively, on the back side of the shoes 76. Moreover, the surfaces 34 are made steeper to provide a wedging effect when the Blatmakon 26 is moved apart. To the orifice of the rod 29 Pistons 36, located in the windows 37 of the housing 25 to move it to the rod 29. On the housing 25 along the axis of the rod 29, the locking screw 38 is made at the end of its head. The bandage 41 of the screw coupling 7 is connected to the drill rod 4 and the body 10 by finger joints 42 and 43, respectively. The screw 41 is made at the ends with threadless and smaller diameter sections 44 and 45 to exit the engagement with the yoke 39 in its extreme positions. The brackets 16 are pivotally connected to the housing 14 by means of helical axles 46 for vertical adjustment of the anchors 17 relative to the topography.

The device works as follows.

The expander 5 is in its working position, and the anchor structure 6 is installed using mobility in the nodal joints of the latter. The drill rod 4 is positioned in such a way that, in a suspended state, the expander 5 is located along the axis of the pre-drilled well for the pile support, and the anchor 17 is along the axes of the previously drilled anchor wells. Then lower the drill rod 4 to lean on one of the buildings 25 o soil surface. The housing 25 of the second anchor 17 is lowered to the ground by means of screws 46. In this case, the rod 29 is in its extreme upper position, and the housing 25 is suspended on it by means of projections 36. This position is the starting point for the operation of the anchor structure 6.

Lower the drill rod 4. When

ten

suspend the weights. The position of the baMakov 26 and the rod 29 is fixed with screws 38.

The hydraulic roller 5 is turned on and with it the knives 11 and 12 are rotated at a predetermined angle. The drive 3 is turned on. Rotation from the not through the rod 4 is transmitted to the screw 41 and the housing 10. The screw 41 rotates in the axial direction at a constant speed, immersing it in the well. Knife 12 cuts off soil chips, which drops into the well. Immersion of the expander 5 (to a predetermined depth) is stopped when the holder 39 comes down to the threadless section 44. In addition, the formation of the cylindrical section of the widening with a conical base ends. The knives 11 and 12 are hydraulically interconnected, return to their original position.

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The shoes 8 and 9 are extended. In this case, the shoes 8 rest on the body and the shoes 9 on the walls of the well. A roll 13 is turned on, which, being turned at a constant speed, approaches the surface of the broadening base and due to the rotation of the body 10 begins to compact the soil, forming a seal zone at the base of the broadening. The reactive force from the operation in the center 13 is transmitted predominantly to the housing 14, since the towers 8 transmit the all vertical component of the reactive force and a large part of the horizontal component. From the housing 14, the reactive force is given to the anchors 17 and column 2 by means of the brackets 16 and 15, respectively. At the end of the work of the roller 13, the drive 3 is turned off. Bashatom rods 29 move to heel-5 Macs 8 and 9 return to the original nicks 30 and 31, and the protrusions 36 - in the windows position and turn off the hydraulic actuator 37. The hinges 32 and 33 slide along the wedge-spreader 5. Stop

prominent surfaces 34 and 35, respectively, moving apart in the radial direction of the shoe 26. The latter rest on the ground, deform it, and the deformation increases with depth due to the difference in the slope of the surfaces 34 and 35. The sliding occurs under its own weight of the drill rod

4, drive 3, roller spreader 5, and part of an anchor structure 6. If necessary, brackets 16

suspend the weights. The position of the shoes 26 and the rod 29 is fixed with screws 38.

The hydraulic roller 5 is turned on and with the help of it, the knives 11 and 12 are opened at a predetermined angle. The drive 3 is turned on. Rotation from it through the rod 4 is transmitted to the screw 41 and the housing 10. The screw 41, rotating in the holder 39, moves the spreader 5 in the axial direction at a constant speed, immersing it in the well. The knife 12 cuts off the chips of soil that is falling into the well. The extension of the expander 5 (to a predetermined depth) ceases when the holder 39 comes down to the threadless section 44. At the same time, the formation of the cylindrical section of the broadening with a conical base ends. The knives 11 and 12 are hydraulically interconnected, return to their original position.

The shoes 8 and 9 are extended. In this case, the shoes 8 rest on the body 10, and the shoes 9 rest on the walls of the well. A roll 13 is turned on, which, when rotated at a constant speed, approaches the surface of the base of the broadening and due to the rotation of the body. 10 begins to compact the soil, forming a compaction zone at the base of the broadening. The reactive force from the operation of the roller 13 is transmitted predominantly to the housing 14, since the all vertical component of the reactive force and a large part of the horizontal component are transmitted to the towers 8. From the housing 14, the reactive force is transmitted to the anchors 17 and the column 2 via the brackets 16 and 15, respectively. At the end of the work of the roller 13, the drive 3 is turned off. Bashvint 38 unscrew. Raise the rod 4, thereby removing the roller spreader 5 and the anchor 17 from the wells. Then the device is moved to the next workplace.

Extraction of loosened soil from wells with broadening into anchor wells can be performed by the second cycle - after replacing the roller spreader and anchor structure with an auger.

Formula

of

1579969 breats

A device for the formation of wells with scrapping under a pile-support, which includes a drilling unit with a guide column, a driving drill rod and a ganek and a roller spreader with retractable shoes, radial turn knives and roller blades, TLI -

in order to expand the technological capabilities of the device by ensuring that it builds up at the wellhead, it is equipped with an anchor structure consisting of anchors, a screw coupling with a yoke and a screw and a hollow body that can be rotated in it and fixing roller spreader, while pol

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the body is connected by means of brackets with a guide column and liquors, a roller spreader is connected to a driven drill rod by means of a screw coupling, the cage of which is attached to the body of the anchor structure with connector possibility, with wedge-shaped planes made on their rear side, and the bar with spacer hinges, and the bar is mounted in the housing of the anchor with the possibility of axial movement, the shoes are pivotally attached along the annular contour to the housing of the anchor with Strongly radial displacement and their interaction with the wedge surfaces of the spacer rod hinges.

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Claims (1)

The claims A device for the formation of wells with broadening under the pile support, including a drilling unit with a guiding column, a driven drill rod and auger, and a roller reamer with retractable shoes, radially-rotary knives and a roller, which is jg which , in order to expand the technological capabilities of the device by providing it with broadening at the wellhead, it is equipped with an anchor structure 15 consisting of anchors, a screw coupling with a holder and a screw, and a hollow body made to rotate in m and fixing the roller expander, while the hollow body is connected via brackets to the guide column and anchors, the roller expander is connected to the drive drill rod by a screw coupling, the clip of which is attached to the housing of the anchor structure with a connector, and each anchor has a body, wedge-shaped shoes. planes made on their back side, and a rod with spacer hinges, and the rod is mounted in the anchor body with the possibility of axial movement, the shoes are pivotally attached to face contour to the anchor body with the possibility of their radial displacement and interaction with wedge-shaped surfaces with spacer rods. ι I 379969 FIG. ¹ ) dd fat-9 of FIG. 10