Piranha Teeth for Tractor Bucket 61QA-31310 Earth Moving Equipment Spare Parts

How does the drag sprocket pull and protect the cable oil pipe

The drag sprocket (or drag chain) achieves the traction and protection of cables, oil pipes, air pipes and other pipelines through specific structural design. The core mechanism is as follows:

I. Traction and Restraint Mechanism

Ordered orientation ‌

The interior of the drag chain is composed of chain link units connected in series to form a closed track, which restricts the pipeline to move within the preset path, avoiding entanglement or knotting.

Separate different pipelines (such as power cables and signal lines) by spacers or isolation strips to prevent mutual interference.

Synchronous motion ‌

The two ends of the drag chain are respectively fixed to the moving end and the static end of the equipment. When the equipment is running, the drag chain moves as a whole, causing the internal pipelines to expand and contract synchronously.

The chain joint design ensures flexible rotation and ADAPTS to compound movements such as reciprocating and rotating.

Ii. Core Protection Functions

Resistant to physical damage ‌

Pressure protection ‌ : The metal or engineering plastic casing resists external impacts and rolling (for example, steel and aluminum drag chains can withstand loads of over 2000N).

Anti-wear ‌ : The pipelines roll and rub within the drag chain to prevent direct scraping against the equipment surface.

Bending radius control ‌

Taking the maximum bending radius in the pipeline as the reference, an additional 10% margin is added as the design value of the bending radius of the drag chain to prevent excessive bending from causing pipeline breakage.

Environmental protection ‌

The closed drag chain offers IP54/IP65 protection grades, effectively blocking contaminants such as cutting fluid, dust, and oil stains.

High-temperature resistant materials (such as nylon) support long-term operation in a high-temperature environment of 150℃.

Iii. Key Design Requirements

Space reserved ‌

The pipeline filling should not exceed 85% of the inner cavity of the drag chain to ensure free movement space.

Hierarchical management ‌

Pipelines with large differences in diameter should be placed separately, and the weight should be evenly distributed (using isolation plates).

Length calculation ‌

The formula for drag chain length: L = S/2 + R + P + 2T

(S: stroke, R: bending radius, P: fixed end offset, T: pitch).

Iv. Actual Effectiveness

Lifespan extension ‌ : Under the protection of the drag chain, the lifespan of the pipeline can be extended to more than three times that of direct exposure (for example, in one case, the lifespan of the cable increased from 3 months to 28 months).

Failure rate reduction ‌ : Orderly wiring reduces equipment failures caused by pipeline entanglement (the failure rate of automotive production line application drops by 72%).

Through the above collaborative design, the drag sprocket provides systematic protection for pipelines under dynamic working conditions, becoming the "lifeline guardian" for the stable operation of industrial equipment.