The dampening assembly includes upper and lower members connecting respectively, to a crane and a vibratory pile driver. The dampening assembly includes inner and outer housing members, the inner housing member connected to the outer housing member. The lower member is connected to an inner assembly of the dampening assembly. The inner housing member is connected to the outer housing member. Connected between the inner assembly and the inner housing member are opposing elastomer shock absorbing elements which stretch to varying extents depending upon the weight applied to the vibratory pile driver.

The dampening assembly includes upper and lower members connecting respectively, to a crane and a vibratory pile driver. The dampening assembly includes inner and outer housing members, the inner housing member connected to the outer housing member. The lower member is connected to an inner assembly of the dampening assembly. The inner housing member is connected to the outer housing member. Connected between the inner assembly and the inner housing member are opposing elastomer shock absorbing elements which stretch to varying extents depending upon the weight applied to the vibratory pile driver.

An in-situ reconstruction and extension structure of an embankment and a construction method thereof are provided. The structure includes a stepped slope excavated on an existing side slope. A gradient of the stepped slope is the same as that of an extension side slope, the stepped slope is individually intersected with top and bottom planes of existing side slope; a toe of existing side slope is taken as a toe of the extension side slope, and gradient of the extension side slope is determined according to positions of the toe and an expanded width. An outer side of stepped slope is filled with a geogrid reinforcement layer in a layered manner, a slope protection structure is arranged on an outer side of the geogrid reinforcement layer to form extension equivalent side slope; a drainage system is arranged at a bottom of the extension side slope.

An in-situ reconstruction and extension structure of an embankment and a construction method thereof are provided. The structure includes a stepped slope excavated on an existing side slope. A gradient of the stepped slope is the same as that of an extension side slope, the stepped slope is individually intersected with top and bottom planes of existing side slope; a toe of existing side slope is taken as a toe of the extension side slope, and gradient of the extension side slope is determined according to positions of the toe and an expanded width. An outer side of stepped slope is filled with a geogrid reinforcement layer in a layered manner, a slope protection structure is arranged on an outer side of the geogrid reinforcement layer to form extension equivalent side slope; a drainage system is arranged at a bottom of the extension side slope.

The present invention relates to a gripping machine (1) which is used for driving and extracting applications of steel-formed materials, profiles and steel pipes called as sheet piles, and has at least one gripping unit (2) that enables to position these materials to the floor in a preferred angle during driving.

The present invention relates to a gripping machine (1) which is used for driving and extracting applications of steel-formed materials, profiles and steel pipes called as sheet piles, and has at least one gripping unit (2) that enables to position these materials to the floor in a preferred angle during driving.

A tubing device is operatively connectable to an excavation machine. The tubing device comprises a base frame, at least one guiding tower operatively connected to the base frame, and a tube operating unit, operatively connected to the guiding tower. The tube operating unit is slidable along the guiding tower and is provided with engaging means capable of both selectively holding a tube segment, and of transmitting a rotary motion and an axial sliding movement to such a tube segment so as to allow the progressive driving in the ground and subsequent extraction from the ground.

A tubing device is operatively connectable to an excavation machine. The tubing device comprises a base frame, at least one guiding tower operatively connected to the base frame, and a tube operating unit, operatively connected to the guiding tower. The tube operating unit is slidable along the guiding tower and is provided with engaging means capable of both selectively holding a tube segment, and of transmitting a rotary motion and an axial sliding movement to such a tube segment so as to allow the progressive driving in the ground and subsequent extraction from the ground.

Disclosed are a discharge jet and a pile-plank applying the same. The discharge jet may include a discharge jet body; the body is connected with a water inlet pipe; the shape of the body is basically the same as the pile-plank; a diameter of the discharge jet is in the range of 50 mm-500 mm; water jet holes are formed in the body; the diameter of each water jet holes is in the range of 1.5 mm-15 mm; each space between adjacent water jet holes is in the range of 8 mm-80 mm; and the maximum included angle formed by the water jet holes is in the range of 30-180. The discharge jet and a method for driving the pile-plank into the earth by the discharge jet have the advantages of wide application range, high construction efficiency and low cost.

The present invention relates a connection adapter providing the connection of jaws (C) of every kind with vibro hammers (V) of every strength, which are used for driving and extracting of steel formed materials, profiles and steel pipes and further the connection adapter has at least one pressure member (4), which enables that the upper connection piece (2) and the lower connection piece (3) are interlocked by applying a force, if the interlocking of the upper connection piece (2) and the lower connection piece (3) is preferred.