Hammer test bench
AssigneeCleveland Brothers Equipment Co., Inc.
InventorsJohn Tinker, Steven Wright
Life of this patent
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Abstract
A test bench for testing a hammer and hammer tool comprising: a bench frame; a load cell assembly mounted on the bench frame for absorbing the impact delivered by the hammer; and a movable mounting deck for securing the hammer to the bench frame and for moving the hammer with the hammer tool into a test firing position against the load cell assembly and delivering an impact force against the load cell assembly. The load cell assembly comprises a pneumatic air bag assembly constructed to dissipate the impact force of the hammer. Other aspects include a load cell assembly for testing a hammer and hammer tool and a method for test firing a hammer tool. Hydraulic hammers generating forces between 200 ft-lb and 12,000 ft-lb can be adequately test fired.
Claims17
A test bench for testing a hammer and a hammer tool, comprising:
- a bench frame;
- a load cell assembly mounted on the bench frame for absorbing the impact force delivered by the hammer;
- and
- a movable mounting deck for securing the hammer to the bench frame and for moving the hammer and hammer tool into a test firing position against the load cell assembly and delivering an impact force against the load cell assembly;
- the load cell assembly comprising a pneumatic air bag assembly constructed to dissipate the impact force of the hammer.
A load cell assembly for testing a hammer and a hammer tool, comprising:
- an impact receptor for receiving the hammer tool of the hammer during testing and for absorbing the impact force delivered by the hammer tool against the impact receptor;
- a pneumatic air bag assembly connected to the impact receptor and constructed to dissipate the impact force;
- and
- a support carriage for securing the pneumatic air bag assembly to the load cell assembly and for holding the pneumatic air bag assembly in a position for maintaining the impact receptor in alignment with the hammer tool.
A method for test firing a hammer and a hammer tool, comprising:
- providing a load cell assembly comprising a pneumatic air bag assembly constructed to dissipate the impact force delivered by the hammer tool and to expand to its original configuration after each test firing cycle of the hammer;
- and
- reciprocating the hammer into a test firing position with the hammer tool of the hammer impacting against the load cell assembly to absorb the impact force delivered by the hammer and to contract the pneumatic air bag assembly, and with the hammer moving away from the load cell assembly to allow the pneumatic air bag assembly to expand to its original configuration after each test firing cycle of the hammer.
Dependencies are inferred from the claim text.