Actually, plywood, also called fishplate, is a kind of railway accessories, also is an important part of railway switch, if the plywood appear problem, will also affect the safety of railway switch, so on the railway rail during normal driving, must be to regular inspection and maintenance of the plywood, if during the inspection, plywood, found a way plywood case of damage, Repair or replacement of a new road splint is required. In use, the difference between the length of the track and the weight of four and six holes. Because different tracks have certain requirements for the quality of the road splints, the difference between the two kinds of holes and the weight is the difference between the two kinds of holes. The track is the road of the train. The track is connected by different railway parts. The parts connecting the track are especially important.

Splint is railway accessories in railway transportation is very important, its main function is to connect two orbitals, due to the particularity of railway transport has created the separability of railway transportation, so in the rail joint must use plywood play loose connection, in order to prevent the orbit, to ensure the stability of the orbit can be continuous when there are vehicles bearing force of the locomotive track. There are a number of ways to connect a railway to a track, the traditional method is to attach the track to a steel rail of about 20 m, with a connection (also known as a seam) between the tracks. It is a steel plate about 60 cm long with four to six steel bolts at each end to keep small holes in the railway. The rails between the rails, about 6 mm wide, are called expansion joints. Road splint is an important part of rail transit, its connection is tight, to ensure the safety of the train, to ensure the safety of pedestrians.