SU1461853A1 - Apparatus for drilling holes with expansions for cast-in-place piles - Google Patents

Abstract

The invention relates to drilling equipment and construction. The goal is race., Widening the operational capabilities of the device. With a working device of the device, made in the form of an annular round drill 1, the drill rod floor (BS) 2 is fastened with the directions 13 and the holes 14 under the lever-. Four-tier knives 9. In the direction of the bushings of the BSh 2, the shto |

Description

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8 with lever knives 9. With rods 8, gears 10 are kinematically connected to a drive shaft 3 mounted with the possibility of axial movement and engagement with BS 2. Supports 12 are mounted on guides 13. BS 2. 2 Support 7 is fixed on shaft 3 and support 7 is installed with the possibility of interaction with the scraper

10, the rotation from the gear 10 is transmitted to the rods 8 and the knives 9. The lugs 12 are lowered along the guides 13 to the lowest position. Under the action of the own weight, the rods 8 with gears 10 move downwards, opening knives 9, which, through holes 14, extend beyond the BS 2 limit and cause destruction of the soil, 3 sludge.

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The invention relates to drilling equipment and construction, and specifically to devices for drilling wells for packing rails.

The purpose of the invention is to expand the operational capabilities of the device.

Fig. 1 shows a dp drilling device with wider views, a general view; in fig. 2 is a section A-A in FIG. 1; in FIG. 3, section BB, in FIG. 2.

The device consists of a forging tool working well of the working body in the form of an annular bucket drill 1, rigidly connected with a hollow drill rod 2, which is rotated by a vertically moving drive shaft 3 of the shaped section, the drive shaft 3 engages with the crack 4 of the rod 2. Crush 4 has a hole 5, which coincides in shape with the cross section of the drive shaft 3. On the drive shaft is fixed gear 6 with the support 7, made in the form of a plate. The support 7 is attached to the lower cavity of the gear 6 with a protrusion beyond its edge. On the outer surface of the rod 2 in the guide bushings there are rods 8, on the lower end of which are mounted four-link arm knives 9, one end connected with a drill 1, Gears 10 are rigidly fixed on the upper end of rods 8, Ring plate 11 rigidly attached to movable stops 12 mounted for movement on the guides 13 attached to the rod 2 At the lower end of the rod 2 there are windows 14 for the passage of the lever knives 9.

The device works as follows.

The device is mounted on the ground at the point of production of the shell pile. The drive shaft 3 together with the gear wheel b is lowered into the hole 5 and rotates the rod 2 together with the crank 1 along with the annular bucket drill 1. The lever knives are in the folded position as the rods 8 are held by the gears 10 by an annular plate 11 fixed by moving stops 12 on guides 13 in the extreme upper position. Upon reaching a predetermined depth, the drive shaft 3 with the gear 6 is lifted and out of the engagement with the rim 4, as a result of which the rotation of the bucket drill 1 is stopped. Then the gear wheel b is engaged with the gears 10 and the support 7 slightly raise them. At the same time, rotation from gear 6 is transmitted through gears 10 to rods 8 and through them to lever knives 9. The stops 12 release the podvizshda and together with the ring plate 11 they lower in direction

13in the lowest position. Under the action of its own weight, the rods 8 with the gears 10 begin to move downwards, contributing to the opening of the lever knives 9, which then extend beyond the limits of the rod 2 through the windows

14 and simultaneously destroy the ground. Destroyed by lever knives 9, the soil enters the bucket drill 1 through receiving windows (not conventionally shown) made in its upper part. Lever knives 9 are folded by lifting gear 7 with gear 10 with rods 8 to the upper position. For this free move

The stop lugs 12 and upward drive shaft 3. After bringing the rods 8 to the uppermost position, the drive shaft 3 is inserted into the hole 5, the movable stops 12 are fixed again on the guide rails 13 and the drilling of the borehole is continued with a ring bucket 1. Lever blades 9 are drilled recesses in the ground on both sides of the bucket drill 1, which allows for greater adhesion of the pile shell to the surrounding soil. The drilling and drilling operations can be combined by increasing the capacity of the bucket drill 1.

Claims (1)

Invention Formula A device for drilling wells with broadening mi-under ramming piles, including a working body, fastened with AzA // Editor M. Bandura Compiled by V. Chunsov Tehred M.DndykKorrektor S. Cherni Order 641/24 Circulation 514 VNIIPI State Committee for Inventions and Discoveries at the State Committee on Science and Technology of the USSR 113035, Moscow, Zh-35, Raushsk nab. 4/5 A hollow drill rod, a drive shaft, rods with lever knives mounted in the guide bushings of a hollow drill rod, movable stops and a support, characterized in that, in order to enhance the operational capabilities of the device, the working member is completed in the form of an annular bucket drill, the drive shaft is installed with the possibility of axial movement and interaction with the hollow drill rod and kinematically connected by means of gears with rods, with This floor of the drill rod is equipped with guides on which stops are installed, and has holes for the lever knives, which are four-link, and the support is fixed on the 20th drive shaft, and the movable stops and the support are installed with the possibility of interaction with pinion gears. 5-5 Window Fig.Z Subscription