Striker head for a pile driving hydraulic hammer

Abstract

A striker head ( 16 ) has a tool joint ( 14 ) at one end for connecting it to a box joint portion ( 12 ) of a vibratory hydraulic hammer ( 10 ). The second end of the striker head ( 16 ) is adapted to engage an end of a H-beam pile ( 20 ) which is composed of spaced apart, substantially parallel flanges ( 22, 24 ) and an interconnecting web ( 26 ) that extends perpendicular to the flanges ( 22, 24 ). The striker section ( 30 ) of the striker head ( 16 ) includes a slot ( 38 ) in which a portion of the web ( 26 ) is received and recesses ( 40, 42 ) at the opposite ends of the slot ( 38 ) in which the flanges ( 22, 24 ) are received.

1 . A striker head for a hydraulic hammer that is adapted to engage an end of an H-beam pile that is composed of a pair of spaced apart, parallel flanges interconnected by a web that is perpendicular to the flanges, said striker head comprising:
 a first end adapted to connect to a hydraulic hammer and a second end adapted to engage an end of the H-beam pile;   said second end of the striker head having a slot that receives an end portion of the pile web and opposite side portions which fit between the two pile flanges on opposite sides of the pile web when the pile web is within the slot, said opposite side portions having recesses at opposite ends of the slot in which end portions of the flanges of the H-beam are received; and   said recesses and said slot having substantially co-planar base surfaces which confront the upper end surface of the H-beam pile.   
   
   
       2 . The striker head of  claim 1 , wherein the opposite side portions of the second end of the head have substantially parallel confronting slot forming surfaces between which the pile web receiving slot is formed, said slot forming surfaces being substantially perpendicular to the base surfaces. 
   
   
       3 . The striker head of  claim 2 , wherein the opposite side portions of the second end of the striker head have substantially planar faces that are parallel to each other and perpendicular to the base surfaces and the slot forming surfaces. 
   
   
       4 . The striker head of  claim 1 , comprising a stem section that includes the first and of the striker head and a striker section that includes the second end of the striker head and a transition section between the stem section and the striker section. 
   
   
       5 . The striker head of  claim 4 , wherein the stem section has a first diameter, the striker section has a larger second diameter and the transition section progressively increases in diameter from the stem section to the striker section. 
   
   
       6 . The striker head of  claim 1 , comprising a pin at the first end of the striker head adapted to mate with a complementary box joint that is a part of the hammer. 
   
   
       7 . The striker head of  claim 7 , comprising a stem section that includes a first end of the striker head and a striker section that includes the second end of the striker head and a transition section between the stem section and the striker section. 
   
   
       8 . The striker head of  claim 7 , wherein the stem section has a first diameter, the striker section has a larger second diameter and the transition section progressively increases in diameter from the stem section to the striker section. 
   
   
       9 . The striker head of  claim 6 , wherein the opposite side portions of the second end of the striker head have substantially parallel confronting slot forming surfaces between which the pile web receiving slot is formed, said slot forming surfaces being substantially perpendicular to the base surfaces. 
   
   
       10 . The striker head of  claim 9 , wherein the opposite side portions of the second end of the striker head have substantially planar faces that are parallel to each other and are perpendicular to the base surfaces and the slot forming surfaces. 
   
   
       11 . The striker head of  claim 1 , wherein said second end has a pair of slots that cross each other, each said slot being constructed to receive the web of the H-beam piling, said second end of the striker head having opposite side recesses at the opposite ends of both slots in which end portions of the flanges of the H-beam are received, said recesses and said slots having substantially co-planar base surfaces which confront the upper end surface of the H-beam pile.