How to Install Railway Sleeper Spikes?
The phenomenon of damage and reduction of service life of road studs caused by installation problems of road studs occurs frequently.
The phenomenon of damage and reduction of service life of road studs caused by installation problems of road studs occurs frequently.
The following are common problems during the installation of the spike:
1. Install on the marking line. The marking is also a kind of resin material, which is attached to the ground itself, and its connection with the ground is limited. If the spike is installed on the marking line, the impact force on the spike will be completely transferred to the marking line. In this way, the spike will be easily knocked off, and the 0 marking line 5 will also be stuck off. 2. The installation position of the spike is uneven. The direct consequence of this 5 is that the force on the spike is uneven, and the pressure on the spike is almost all concentrated in the convex and concave parts. In case of large tonnage vehicles, the spike is easy to break.
3. The installation position of the spike is not clean. The fastness of the spike depends on the close combination of the spike, glue and the ground. If the installation position is not clean, the dust between them will absorb most of the adhesive force of the glue, resulting in poor adhesion of the spike, which is easy to fall off when subjected to external impact.
4. The amount of glue is insufficient or excessive. If the amount is not enough, it will reduce the firmness of the tack bonding and reduce its service life; If the amount is too much, the excess glue will seep out from around the spike, which is easy to rub on the reflector of the spike, affecting its reflective brightness.
5. The glue is applied unevenly. When installing the spike, the glue should not only be used moderately, but also applied evenly, so as to ensure that all parts of the spike are evenly stressed and avoid being crushed due to uneven stress.
6. The ambient temperature is not enough when epoxy resin glue is mixed. The epoxy resin glue is a two-component glue. The glue and curing agent should be proportioned according to a certain proportion, and can play their role only after being evenly stirred. However, the epoxy resin glue is hard to be stirred evenly due to its severe condensation in the cold weather in winter, so it must be heated before use to soften the glue.
7. The method of handling spikes is unscientific. When pinching the spike, you must pinch the two sides without reflectors to prevent glue from sticking to the reflectors and affecting the reflective brightness of the reflectors.
8. The installation holes of road studs are shallow and thin. This is mainly for cast aluminum strip toe nails. The cast aluminum strip toe nail has better impact resistance, compression resistance and longer service life because part of it goes deep into the ground. However, in the installation process, if the hole is too shallow or too thin, the bottom surface of the spike cannot fully contact the ground, which affects the firmness of the bonding.
9. The time for glue curing after installation is not enough. After the installation of the spike, the glue needs to be solidified for a period of time to connect the spike and the ground closely. The author recommends 4 hours during this period. But in the actual process, many people removed the installation isolation facilities less than two hours after installation; In this case, if the spike is impacted and rolled by vehicles, the light spike will deform and the heavy spike will fall off.
