Shock absorbing rope

Abstract

The invention provides a shock absorbing rope, in which a rope body shaped in a long tube formed to be elongated in a longitudinal direction thereof and a core member arranged inside of the tube of the rope body in a eased state are formed independently and separately from each other; the both ends of the rope body and the both ends of the core member in the longitudinal direction thereof are fixed with each other; and a length of the rope body in a contraction state is shorter than a length of the core member that is not in the eased state and the core member is arranged in the tube of the rope body in the eased state, and the rope body can be elongated longer than the length of the core member that is not in the eased sate.

1 . A shock absorbing rope comprising: 
 a rope body shaped in a long tube that is formed to be elongatable in a longitudinal direction thereof and a long core member that is arranged inside of the tube of the rope body,    wherein both ends of the rope body in the longitudinal direction thereof and both ends of the core member are fixed with each other,    a length of the rope body in a contraction state is shorter than a length of the core member that is not in an eased state and the core member is arranged in the tube of the rope body in the eased state, and    the rope body can be elongated longer than the length of the core member that is not in the eased state.    
     
     
         2 . The shock absorbing rope according to  claim 1 , 
 wherein the rope body can be elongated and contracted in the longitudinal direction thereof combined with change of a configuration due to displacement of a composition thread constituting the rope body, and    the length of the core member that is not in the eased state and the length of the rope. body that is elongated in the longitudinal direction thereof in accordance with the change of the configuration are set to be substantially the same.    
     
     
         3 . The shock absorbing rope according to  claim 1 , 
 wherein a bearable load of the rope body that is elongated to a maximum is set to be heavier than that of the core member that is elongated to the maximum, and    a total sum of the bearable load of the rope body in the maximum elongation and the bearable load of the core member in the maximum elongation is set to be heavier than the maximum load when a shock is given to the rope body and the core member.    
     
     
         4 . The shock absorbing rope according to  claim 1 , 
 wherein the rope body has a hollow woven structure.    
     
     
         5 . The shock absorbing rope according to  claim 1 , 
 wherein the rope body is woven in a sate that a tension is applied to the composition thread constituting the rope body; when weaving the rope body, the configuration of the rope body is formed while being elongated to the maximum; and after weaving of the rope body, the configuration of the rope body is kept to be contracted in the longitudinal direction thereof.    
     
     
         6 . The shock absorbing rope according to  claim 1 , 
 wherein the composition thread constituting the rope body partially includes an extensible rubber, and the extensible rubber is woven as a part of a warp thread.    
     
     
         7 . The shock absorbing rope according to  claim 1 , 
 wherein the composition thread constituting the rope body is composed of a synthetic fiber of a high intension.    
     
     
         8 . The shock absorbing rope according to  claim 1 , 
 wherein the composition thread of the core member is composed of a synthetic fiber of a high ductility.    
     
     
         9 . The shock absorbing rope according to  claim 1 , 
 wherein the core member has a structure of herringbone woven fabric or plain woven fabric to be formed in a narrow width tape.    
     
     
         10 . The shock absorbing rope according to  claim 1 , 
 wherein the shock absorbing rope comprises safety member for high altitude work having connecting fittings that are fixed to the both ends of the rope body and the core member in the longitudinal direction thereof, respectively.