1. Frame and traction pin: The frame is a space frame type low-alloy steel welded structure. The frame is welded by two T-shaped longitudinal beams and cross beams to support the load. There are traction pins and traction pin plates under the front part of the frame that are connected with the tractor, and the specification is No. 90. The traction pin adopts assembly type, which is easy to replace. The front cross beam of the frame is equipped with an air brake connector and a wire connection socket. The front and back and sides of the frame are equipped with lighting or signaling devices.
2. Suspension system: The lower part of the longitudinal beam is welded with a suspension device to support, and the front lower part is equipped with a support device support. The suspension system is a three-axis leaf spring suspension, which is used to support the load and absorb driving vibration. The leaf spring suspension system is fastened to the axle body with U-shaped bolts.
The parking brake is controlled by an energy-storage spring brake system, and the wheel brake doubles as the parking brake. Use this device when parking or standing on a slope.
3. Axles and wheels: Three axle assemblies with the same structure are installed under the suspension system. The axle is a square tube axle, and the axle body is provided with a platform for installing a leaf spring suspension and a bracket for installing a brake air chamber. The axle head is used to install wheels, hubs and brakes.
4. Supporting device: In order to make the semi-trailer safely park after being separated from the index car, there are two supporting devices for left-right linkage or left-right single-action at the front end of the frame. It is composed of a screw drive mechanism, a bevel gear drive mechanism, a two-speed reduction box, a transmission rod, an operating handle, etc. When the handle is pushed in, it can be rotated at a high speed, and when the handle is pulled out, it can be rotated at a low speed. When the base touches the ground, only low-speed gear can be used for lifting.
5. Brakes and their operating devices: The semi-trailer adopts a dual-pipe pneumatic braking system and is equipped with an anti-lock braking system (ABS).
6. Electrical system: The semi-trailer is equipped with an international electrical system compatible with the tractor. There are electrical connector sockets on the front cross beam of the frame. Brake lights, turn signals, stop lights, reversing lights, license plate lights, fog lights, and triangle reflectors are provided at the rear of the frame, and front position lights and width lights, side marker lights, and front right are provided on the front and both sides Equipped with ABS indicator light. The voltage of various lamps is DC 24V.
7. The tank body is an all-metal welded part. The tank body is a sealed container filled with materials formed by the flow circle butt joint of ordinary carbon structural steel plate and the stamping head welding.
