This is a chain type automatic locking hook for the rear door of a dump truck (dump truck), which is a key accessory for the trunk door of an engineering vehicle. The core information is as follows:
Structural Composition
- Lock hook body: made of cast steel material (ZG270-500), with a hook shaped structure, used to clamp the rear door of the cargo box.

- Chain component: Thick manganese steel chain, connecting locking hook and adjusting device, transmitting tension and adapting to different opening and closing angles.

- Adjustment mechanism: a red metal bracket with bolts and rubber buffering components, which can adjust the length of the chain and the tightness of the locking mechanism.

Function and Applicable Scenarios
- Function: Automatically unlock the tailgate during self dumping, assist in resetting and locking the tailgate after dumping goods, and have both buffering and fastening functions.

- Applicable vehicle models: Engineering dump trucks, dump trucks, and dump trucks from brands such as Heavy Duty Truck HOWO, Ouman, and Huajun.

Our casting suspension parts are engineered for heavy-duty use, offering superior strength and resilience for semi-trailers, commercial vehicles, and industrial transport. With a focus on precision casting and high-quality materials, our suspension components provide the stability, comfort, and load management required for even the most demanding applications.