Foundation pile driver
First Claim
Patent Images
1. A pile driver for driving foundation piles, comprising:
- a gantry-type frame, in turn comprising a horizontal base resting on an underlying foundation structure, two uprights extending upwards from the base, and a horizontal top member connecting the two uprights;
a first movable body which is located between the two uprights and slides along the uprights;
a first lock device fitted to the base and which, in use, rigidly engages a connecting member of the underlying foundation structure;
a second lock device fitted to the first movable body and which, in use, rigidly engages a shaft of a pile to be driven; and
at least one first hydraulic jack to move the first movable body along the uprights, the first hydraulic jack comprises a cylinder connected rigidly to the first movable body and a piston fixed at the top end to a bottom surface of the top member of the frame;
wherein the first lock device comprises a through first hole formed through the base and tapering downwards;
a number of first wedges, each of which is sector shaped and inserted, in use, inside the first hole; and
a first actuating device for raising the base of the frame with respect to the underlying foundation structure; and
wherein the second lock device comprises;
a through second hole formed through the first movable body and tapering upwards;
a number of second wedges, each of which is sector-shaped and inserted inside the second hole;
an annular supporting plate located beneath the first movable body and supporting the second wedges; and
a second actuating device supporting plate towards for moving the first movable the body.
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Accused Products
Abstract
A pile driver for driving foundation piles, and having: a frame, in turn having a horizontal base, at least one upright extending upwards from the base, and a movable body which slides along the upright; a first lock device fitted to the horizontal base and which, in use, rigidly engages a connecting member of a foundation structure; a second lock device fitted to the movable body and which, in use, rigidly engages a shaft of a pile to be driven; and at least one hydraulic jack connected to the frame and to the movable body to move the movable body along the upright.
11 Citations
15 Claims
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1. A pile driver for driving foundation piles, comprising:
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a gantry-type frame, in turn comprising a horizontal base resting on an underlying foundation structure, two uprights extending upwards from the base, and a horizontal top member connecting the two uprights; a first movable body which is located between the two uprights and slides along the uprights; a first lock device fitted to the base and which, in use, rigidly engages a connecting member of the underlying foundation structure; a second lock device fitted to the first movable body and which, in use, rigidly engages a shaft of a pile to be driven; and at least one first hydraulic jack to move the first movable body along the uprights, the first hydraulic jack comprises a cylinder connected rigidly to the first movable body and a piston fixed at the top end to a bottom surface of the top member of the frame; wherein the first lock device comprises a through first hole formed through the base and tapering downwards;
a number of first wedges, each of which is sector shaped and inserted, in use, inside the first hole; and
a first actuating device for raising the base of the frame with respect to the underlying foundation structure; andwherein the second lock device comprises;
a through second hole formed through the first movable body and tapering upwards;
a number of second wedges, each of which is sector-shaped and inserted inside the second hole;
an annular supporting plate located beneath the first movable body and supporting the second wedges; and
a second actuating device supporting plate towards for moving the first movable the body. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14)
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15. A pile driver for driving foundation piles, comprising:
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a gantry-type frame, in turn comprising a horizontal base resting on an underlying foundation structure, two uprights extending upwards from the base, and a horizontal top member connecting the two uprights; a first movable body which is located between the two uprights and slides along the uprights; a first lock device fitted to the base and which, in use, rigidly engages a connecting member of the underlying foundation structure; a second lock device fitted to the first movable body and which, in use, rigidly engages a shaft of a pile to be driven; at least one first hydraulic jack to move the first movable body along the uprights, the first hydraulic jack comprises a cylinder connected rigidly to the first movable body and a piston fixed at the top end to a bottom surface of the top member of the frame; a second movable body, which is located beneath the first movable body, is not connected to any actuator to be mounted to slide freely along the upright, and is normally rested on the horizontal base of the frame; a third lock device fitted to the second movable body and which, in use, rigidly engages the shaft of the pile; wherein the first lock device comprises a through first hole formed through the base and tapering downwards;
a number of first wedges, each of which is sector shaped and inserted, in use, inside the first hole; and
a first actuating device for raising the base of the frame with respect to the underlying foundation structure;wherein the second lock device comprises;
a through second hole formed through the first movable body and tapering upwards;
a number of second wedges, each of which is sector-shaped and inserted inside the second hole;
an annular supporting plate located beneath the first movable body and supporting the second wedges; and
a second actuating device supporting plate towards for moving the first movable the body; andwherein, to join two successive segments the shaft of the pile, the second movable body and relative third lock device are used to steady the bottom segment of the shaft by the third lock device being clamped about the bottom segment of the shaft and the second movable body being rested on the horizontal base underneath.
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Specification