Safety attachment device for two actuators

Abstract

Applicable in installations with two reaction bars attached to a first and a second piece, arranged above two actuators, also attached to the first and second piece for producing the relative displacement between both pieces. It comprises a support located between the reaction bars, fastened to them, covering at least their upper part; each reaction bar having at least one first cable, located above the surface of the support and whose ends are attached to the confronting side walls of an actuator; some vertical arms attached to the support and to two horizontal parallel bars, located between the confronting side faces of the actuators; at least one second cable located around each one of the horizontal parallel bars that are fastened to the side face of an actuator so that, when an actuator is disconnected from the first or second piece, it is kept retained by means of the device.

1 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, applicable in installations comprising two parallel reaction bars ( 4 ) that are attached to a first piece ( 2 ) and to a second piece ( 3 ), and which are also arranged above two parallel actuators ( 1 ), also attached to the first piece ( 2 ) and second piece ( 3 ), so that,.when at least one actuator ( 1 ) is actuated, the relative displacement between the first piece ( 2 ) and second piece ( 3 ) is produced; wherein the device comprises:
 a support ( 5 ) running between the reaction bars ( 4 ) and attached above them, in such a way that covers at least their upper part;   at least one first cable ( 9 ) for each one of the reaction bars ( 4 ) arranged above the surface of the support ( 5 ) and whose ends are attached to the confronting side walls of an actuator ( 1 );   vertical arms ( 10 ) attached to the support ( 5 ) and to two horizontal parallel bars ( 11 ) which are located between confronting side faces of the actuators ( 1 );   at least one second cable ( 12 ) located around each one of the horizontal parallel bars (  1 ) and whose ends are fastened to the side face of the actuator to which it is confronting, so that, when one of the actuators ( 1 ) is disconnected from the first piece ( 2 ) or the second piece ( 3 ) it is kept retained by means of the device.   
     
     
         2 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 1 , wherein the support ( 5 ) consists of a frame ( 13 ) comprising first parallel sides ( 6 ) and second parallel sides ( 7 ), whose first parallel sides ( 6 ) are fixed above each one of the reaction bars ( 4 ). 
     
     
         3 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 2 , wherein the frame ( 13 ) is made of a metal sheet. 
     
     
         4 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 2 , wherein the parallel sides ( 6 ) of the frame ( 13 ) present a semicircular cross-section which is fixed above the reaction bars ( 4 ) by means of clamps ( 8 ) closing the lower part of said reaction bars ( 4 ), so as to permit the first cables ( 9 ) to slide on their respective first parallel sides ( 6 ) when the actuator to which they are attached is disconnected. 
     
     
         5 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 4 , wherein the vertical arms ( 10 ) are attached to the middle part of the second parallel sides ( 7 ). 
     
     
         6 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 2 , wherein the second parallel sides ( 7 ) comprise means of reinforcement. 
     
     
         7 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 6 , wherein the means of reinforcement of the second parallel sides ( 7 ) consist of folds made in said second parallel sides ( 7 ). 
     
     
         8 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 7 , wherein folds for reinforcement of the second parallel sides ( 7 ) define a “U” shaped configuration. 
     
     
         9 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 1 , wherein the vertical arms ( 10 ) consist of folded metal sheet and include means of reinforcement. 
     
     
         10 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 9 , wherein the means of reinforcement of the vertical arms ( 10 ) consist of ribs. 
     
     
         11 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 1 , wherein the horizontal parallel bars ( 11 ) are hollow. 
     
     
         12 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 1 , wherein the ends of the first cables ( 9 ) are attached to the upper part of the confronting side faces of the actuator ( 1 ) and in the vertical of its center of gravity. 
     
     
         13 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 12 , wherein one of the ends of the first cables ( 9 ) and of the second cables ( 12 ) are attached to the side walls of the actuators ( 1 ) in a way that is permanent, while the other end is fixed in a way that is detachable. 
     
     
         14 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 1 , wherein the first cables ( 9 ) or the second cables ( 12 ), or both, are steel cables. 
     
     
         15 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 2 , wherein the first cables ( 9 ) or the second cables ( 12 ), or both, are steel cables. 
     
     
         16 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 9 , wherein the first cables ( 9 ) or the second cables ( 12 ), or both, are steel cables. 
     
     
         17 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 11 , wherein the first cables ( 9 ) or the second cables ( 12 ), or both, are steel cables. 
     
     
         18 . SAFETY ATTACHMENT DEVICE FOR TWO ACTUATORS, according to  claim 12 , wherein the first cables ( 9 ) or the second cables ( 12 ), or both, are steel cables.