Correct installation and use of traction seat and traction pin

Correct installation and use of traction seat and traction pin

Before the delivery of the traction seat, the fit clearance between the locking hook and the traction pin shall meet the standard. After driving the specified mileage, the locking hook and traction pin will wear normally. At this time, the clearance can be adjusted with the adjusting screw. The adjustment method is: loosen the fastening nut of the adjusting screw, and turn the adjusting screw outward according to the gap size to eliminate the gap. When the operating lever is pulled, the locking hook and locking bolt will open and return automatically. When the nut is tightened, it can be re tightened and put into use. Due to the "one main multi hook" transportation mode, the semi-trailer train often needs to be disconnected, and the wear ring and locking hook are inevitably worn. When the size of wear ring a is ≤ 30.5 ram and the size of locking hook is 6 ≤ 17.5, the ram, wear ring and shackle need to be replaced.

The method to replace the wear ring is to remove three hexagon socket head bolts locally, and then use a screwdriver to pry up the chamfered side of the wear ring opening to remove the wear ring. Install a new wear ring on the original vehicle. The method to replace the locking hook is: after removing the wear ring, screw on the M12 bolt on the locking hook pin, pull out the locking hook pin, remove the spring, take out the locking hook, replace the locking hook with a new one, and adjust the screw to recover.

The installation and use of the traction pin depends on the installation form. The specifications of the traction pin are 2 inches (50) and 3.5 inches (90).

Assemble the traction pin The assembly traction pin consists of a pallet, a traction pin and 8 self-locking bolts. According to the thickness of sliding plate, there are three types of assembled traction pins: 8mm, 10mm and 12mm. Welding traction pin is used to weld the pallet to the sliding plate of semi-trailer.

When the assembled traction pin is worn or accidentally damaged, it must be replaced: remove 8 self-locking bolts (self-locking bolts are disposable), tighten the new traction pin with 8 self-locking bolts, and tighten the torque. The 130Nm tray is suitable for 2-inch and 3.5-inch (q, 88.9ram) interchangeable pull pins.

The welding traction pin is directly welded to the sliding plate of the semi-trailer, and the traction pin cannot be replaced. The material of the traction pin is 20CrMnTi, and the surface is carburized and quenched to improve the wear resistance of the surface. According to the thickness of the sliding plate, there are also three types of welded traction pins: 8mm, 10mm and 12mm.

As a class a safety component of semi-trailer train, the replacement of traction pin is very important for driving safety. When the relevant parts of the traction pin (see Figure 8) are worn to the specified extent, i.e. c ≤ 71mm, d ≤ 49mm, e ≤ 82, replacement is required. After 50000 km, check the dimensions regularly. The correct installation and operation of the traction seat and traction pin can greatly extend the service life of the traction seat and traction pin, and more importantly, ensure the driving safety and reduce the transportation cost. Improve transportation efficiency.

The above is the correct installation and use of the traction seat and traction pin. If you have any other questions, please contact us!