RU2212499C2 - Facility to form holes in ground - Google Patents

Abstract

FIELD: construction of pile foundations, formation of holes in ground under embankments for passage of pipelines. SUBSTANCE: facility includes three hydraulic double-action cylinders: first with sharpened tip controls anchor anchoring nose part, second gives longitudinal motion and third controls anchor anchoring tail part of facility. Hydraulic cylinders are positioned uniaxially. Third hydraulic cylinder is fitted with sharpened tip, anchors come in the form interjoined levers. Free ends of anchor levers are employed to anchor nose part of facility and are hinged to piston and body of first hydraulic cylinder and free ends of anchor levers anchoring tail part of facility are linked to piston and body of third hydraulic cylinder. Assembled facility is suspended from vehicle at angle with ground surface and is located in guiding tube up to moment of its sinking into ground. EFFECT: simplified process of erection of foundation, enhanced productivity of process. 2 dwg

Description

 The present invention relates to the construction of mainly pile foundations. The device also relates to the formation of holes in the ground under embankments for the passage of pipelines.

 The closest analogue of the invention is a device as. USSR 142337 A, cl. E 02 F 5/18, 1962.

 The technical result of the invention is to simplify the construction of foundations and increase the productivity of the process.

 The technical result is achieved by the fact that the device for forming holes in the ground contains three double-acting hydraulic cylinders connected to each other: the first, with a pointed tip, controlling the anchor for anchoring the bow of the device, the second for communicating longitudinal movement to the device and the third, controlling the anchor for anchoring the tail of the device.

 The hydraulic cylinders are mounted coaxially, while the third hydraulic cylinder is equipped with a pointed tip, and the anchors are made in the form of levers pivotally connected to each other.

 The free ends of the armature levers for anchoring the bow of the device are pivotally connected to the piston and the body of the first hydraulic cylinder, and the free ends of the armature levers for anchoring the tail of the device are connected with the piston and the body of the third hydraulic cylinder.

 In this case, the entire device, until it is immersed in the ground, is placed in a guide tube suspended from the vehicle at an angle to the ground surface.

A comparison of the developed device shows its significant differences:
equipment is more compact;
performance is higher;
destruction of piles during their immersion is excluded.

 In FIG. 1 shows a device for forming holes in the soil suspended from a vehicle at an angle α to the soil surface; in FIG. 2 shows the device itself for forming holes in the ground. The said device contains three hydraulic cylinders: 1 - on the bow, 2 - in the middle, 3 - on the tail of the device.

 All hydraulic cylinders are connected to each other coaxially.

 The first and third hydraulic cylinders have pointed tips 4, levers 5 and hinges 6. The levers 5 form anchors designed to anchor the nose or tail pointed tips 4. The anchors are controlled by the first and third hydraulic cylinders. The hinges 6 connect the articulated levers 5 with the body and piston of the hydraulic cylinder, therefore, with a direct stroke of the hydraulic cylinder, the anchors are removed, and with the reverse stroke, they expand and anchor the device either in the ground or in the guide pipe 7.

 The device is placed in the guide tube 7, suspended from the vehicle 8 at an angle α to the surface of the earth. From the winch 9, the cable 10 through the block 11 goes to the tail of the device.

 The pump 12 and the hose reel 13 can be mounted directly on the guide tube 7. The pressure hose 14 for supplying oil under pressure goes to the tail tip of the device 4 through the block 15.

 The method of forming holes.

 A device for forming holes in the ground is suspended above the design point in the guide tube 7 at a certain angle α to the surface of the earth.

 The bow and tail anchors are pulled in, controlling the hydraulic cylinders 1 and 3. Pull the device with a winch 9 to the top of the pipe 7, release the device, and it rushes down under the influence of its own weight and cuts into the ground with a pointed nose tip 4.

 The hydraulic cylinder 3 extends the anchors and anchors the device in the guide tube 7. Turn on the direct stroke of the hydraulic cylinder 2 and forcefully push the bow of the device by the stroke of the piston of the hydraulic cylinder. Anchor the bow of the device by turning on the return stroke of hydraulic cylinder 1. Release the anchoring of the tail of the device by turning on the direct stroke of hydraulic cylinder 3. Pull the device to its anchored bow, turning on the return stroke of the second hydraulic cylinder. The tail part of the device is anchored by turning on the reverse stroke of the third hydraulic cylinder, and the cycles are repeated until the device reaches the design point.

 Pull both anchors of the bow and tail and remove the device from the ground with a winch 9, pulling it into the pipe 7. Anchor the device in the pipe 7 and drive the vehicle 8 to a new position.

 A reinforcing cage is inserted into the hole formed in the soil and the hole is filled with concrete, compacting it with a deep vibrator. When using ready-made piles, the pile is inserted into the hole and the cavity is filled, for example, with sand pulp along the hose.

Claims (1)

 A device for forming holes in the ground, containing three double-acting hydraulic cylinders connected to each other: the first with a pointed tip controlling the anchor for anchoring the bow of the device, the second for communicating longitudinal movement and the third controlling the anchor for anchoring the tail of the device, characterized in that the hydraulic cylinders are mounted coaxially, while the third hydraulic cylinder is equipped with a pointed tip, and the anchors are made in the form of levers articulated with each other, with free ends The armature levers for anchoring the bow of the device are pivotally connected to the piston and the body of the first hydraulic cylinder, and the free ends of the armature levers for anchoring the tail of the device are connected to the piston and the body of the third hydraulic cylinder, while the whole device is placed in the guide pipe suspended to the vehicle at an angle to the ground surface.

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