Isuzu 4WD hook loader truck

1. Introduction: Isuzu Detachable Hookloader Truck represents an innovative sanitation vehicle designed to cater to the demands of modern cities and towns. It efficiently collects and transports garbage, providing time-saving and labor-saving features.

2. Overall Structural Design: The Detachable Isuzu NKR Hookloader Truck comprises a Type II Isuzu truck chassis, sub-frame assembly, hookloader assembly, different types dumpster garbage bins, and hydraulic system.

3. Chassis Section: the Detachable Hookloader Truck must possess adequate power performance, dimensions, and overall vehicle mass. Considering the specifications, the Type II Isuzu chassis is manufactured by Original Isuzu technology.

4. Subframe Design: The sub-frame assembly consists of protective bars, mudguards, longitudinal beams, oil cylinder fixed beams, flip support frames, roller mechanisms, and garbage bin supports, all welded and assembled together. Protective bars, made by welding 50mm×30mm×2.0mm rectangular steel tubes and 20mm×20mm×2.0mm rectangular steel tubes, are connected to the longitudinal beams with four M10 bolts for simple manufacturing and reliable strength. Mudguards, crafted from 1.5mm Q235 steel, offer both lightweight and reliable support. The flip support frame, combining rectangular tubes, thick plates, and bushings, operates with hinge pins and roller mechanisms to facilitate smooth garbage bin lifting and loading.

5. Hook Loader Assembly Design: The hookloader assembly, as illustrated comprises a hook, vertical arm, horizontal arm, main arm cylinder shaft sleeve, flip axis sleeve, and bent hook. The hook is pivotal in lifting the garbage bins, while the main arm cylinder shaft sleeve connects to the hydraulic system’s main arm cylinder using a hinge pin. The flip axis sleeve connects to the front axle sleeve of the connecting frame assembly through a hinge pin, enabling rotation between the hook arm assembly and the connecting frame assembly. The rotatable bent hook regulates the connection status between the flip support frame and the hook arm. By designing additional reinforcing ribs, the stress concentration points at the connections between the vertical arm and the horizontal arm, as well as the main arm cylinder shaft sleeve, ensure that the hookloader assembly meets strength requirements.

6. Hydraulic system Design: The Detachable Hookloader Truck’s hydraulic system controls the lifting and lowering cylinders for efficient garbage bin loading and unloading. The hydraulic oil is drawn from the reservoir into the gear pump via motor rotation. The lifting speed of the cylinder is managed by the pressure regulating valve. The three-position four-way solenoid valve, when in position A, activates the lifting function, while the overflow valve ensures excess hydraulic oil flows back to the reservoir during high oil pressure. The two-position three-way solenoid valve, in position B, enables cylinder descent, regulated by the one-way valve and flow control valve, ensuring safe and controlled operations.

7. Power System Design: The chassis power supply derives from the engine’s generator and the power battery.

8. Electric Principle Design: The overall electrical principle design is represented in Figure 6. The control handle operates the push rod motor, which controls the bending hook connecting the hookloader assembly and the flip support frame. The unloading and unboxing states are achieved through the manipulation of various switches and relay-controlled circuits (Figure 8). The emergency stop switch effectively prevents battery consumption when not in use.

9. Operation Process: demonstrates the operational steps of the Detachable Hookloader Truck, including loading, unloading, and self-unloading processes. The hookloader assembly’s movement is controlled by buttons on the control handle, and the bending hook regulates the hook’s connection status for effective unloading.