RAIL FASTENING DEVICE HAVING OUTER CHEST FOR INDUCING SHEAR LOAD

The present invention relates to a rail fastening device having an outer chest for inducing a shear load, configured such that a transverse load transmitted from a rail is induced to be counterbalanced en route to a large extent, without acting as a bending load regarding a fastening bolt, and to act as a shear load, thereby suppressing damage to the fastening bolt and lengthening the life of the entire product, the rail fastening device comprising: a base plate; an elastic pad; a guide plate; a fastening clamp; a fastening bolt; and an outer chest which is installed tightly on the upper surface of the crosstie so as to make a frictional contact, which has a bottom plate for mounting the elastic pad and the guide plate such that the lower end surface of the guide plate is tightly mounted on the upper surface of the bottom plate, which has support portions on the left and right sides of the bottom plate to tightly support the guide plate, respectively, and which has through-holes successively penetrated by a fastening bolt that penetrates the guide plate, wherein, when a transverse load is applied from a rail to the guide plate, the outer chest supports the guide plate by means of the support portions, counterbalances the transverse load by means of resistance resulting from the frictional contact with the crosstie, and induces the counterbalanced transverse load so as to act on the fastening bolt as a shear load occurring on a parallel surface that contacts the crosstie. La présente invention concerne un dispositif de fixation de rail doté d'un caisson externe servant à induire une charge de cisaillement, configuré de telle sorte qu'une charge transversale transmise depuis un rail est induite afin d'être en grande partie équilibrée en chemin, sans agir comme une charge de flexion pour ce qui concerne un boulon de fixation, et de manière à agir comme une charge de cisaillement, supprimant ainsi les dommages au boulon de fixation et prolongeant la durée de vie du produit dans son ensemble. Le dispositif de fixation de rail selon l'invention comprend : une plaque d'assise ; un bourrelet élastique ; une plaque de guidage ; une pince de serrage ; un boulon de fixation ; et un caisson externe qui est monté solidement sur la surface supérieure de la traverse de manière à établir un contact de friction, lequel possède une plaque inférieure destinée au montage du bourrelet élastique et de la plaque de guidage de telle sorte que la surface d'extrémité inférieure de