Views: 23 Author: Site Editor Publish Time: 2023-05-23 Origin: Site
The King Pin can be divided into sizes 50(mm) and 90 depending on the diameter of the pull bolt. According to the standard, the tension pin can be divided into types A and B according to the shape, and can be divided into welding type and mounting type according to the mounting method. The processing materials are generally carbon steel and alloy steel.
What is the production process of King Pin?
How does the King Pin work?
What are the precautions for connecting the King Pin to the trailer?
The production of King Pins is carried out according to the following methods:
1) The choice of steel. As the material of choice for tension pins, pure low-alloy steel with stable chemical composition is generally used. 40 chrome round steel is mostly used in the market.
2) Forging. Cold stamping is generally used for forging. During the forging process, attention must be paid to the exact deformation of the material. Before and during forging, attention should be paid to dimensional control, magnetic fault detection and macro dive decoration.
3) Product inspection and heat treatment.
The tractor of the semi-trailer is connected to the chassis by the King Pin card on the tractor.
The towing bolt is the connection between tractor and trailer. There are two possibilities:
The first type of King Pin is that the front half of the trailer is placed on the traction saddle above the rear part of the tractor, and the bridge behind the tractor bears part of the weight of the trailer, which is the semi-trailer;
The second type of King Pin is that the front end of the trailer is connected to the rear end of the tractor. The tractor only provides forward traction and pulls the trailer away, but does not carry the downward weight of the trailer. This is the full trailer.
When the King Pin is ready to be connected to the trailer, it should be ensured that the locking block of the train seat is open and is in a free state. At the same time, make sure that the traction board of the trailer is 1-3 cm lower than the middle position of the upper plane of the tractor's traction saddle, and make sure that it is not too high. Otherwise, sometimes not only will the connection not be made, but the traction seat, traction pin and associated parts will also be damaged.
When the tractor is reversing, the vehicle speed should be kept as slow as possible to avoid an impact on the saddle, towing bolt and support legs of the trailer due to too high speed. cause damage to the above components.
The centreline of the tractor and the semi-trailer shall remain the same and the deviation of the centreline of the two vehicles shall be limited to less than 40mm. Align the tractor's saddle with the pull pin and slowly reverse until you hear a click sound, and when the lock block returns, the tractor and trailer are successfully towed.
The WONDEE brand and WONDEE products, which have been established for more than ten years, focus on the production of King Pins. Here you will find the matching King Pins.
