Unlock Mixing Efficiency: The Smart Design Behind Mixer Arm & Shaft Connections

For concrete mixer performance and longevity, the connection between mixing arms and the agitator shaft is critical. Zhongrun Intelligent Equipment dives into prevalent removable connection structures and innovative solutions combating concrete buildup.

The Removable Connection: Strength & Serviceability
Widely adopted designs feature a square-section mixer shaft. The mixing arm itself is ingeniously split into upper and lower halves. Four high-tensile bolts clamp these halves securely around the shaft.

• Torque Transmission: The upper half integrates a shear key slotting directly into the shaft, efficiently transferring crucial rotational force.

• Integrated Clamping: The lower half provides firm contact with the shaft. A precision-machined connecting sleeve then unites both arm halves.

• Secure Assembly: This sleeve features locating spigots at each end, mating perfectly with corresponding features on the arm halves. A large locknut at the shaft end tightens the entire assembly – arm and sleeve – solidly together.

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Key Advantages of the Sleeve Design:

1. Reduced Concrete Adhesion: The sleeve's smooth, continuous outer diameter becomes the effective shaft surface. This seamless finish prevents wet concrete from gripping easily and simplifies cleaning.

2. Enhanced Shaft Rigidity: Acting as an integral part of the shaft, the sleeve significantly boosts bending resistance. This allows for the use of a smaller diameter, lighter main shaft without sacrificing structural integrity.
   (Note: The trade-off involves more complex machining and potentially higher manufacturing costs).

Combating Stubborn Buildup: The Self-Cleaning Solution
In larger mixers, areas near the shaft (where low linear velocity occurs) often suffer from persistent concrete accumulation. A clever innovation solves this:

• An elliptical self-cleaning ring is fitted loosely around the connection zone.

• As the shaft rotates, this ring gently shifts and rotates, actively dislodging clinging concrete before it hardens, maintaining optimal flow and efficiency.

Zhongrun: Your Partner for Premium Mixer Wear Parts
Demanding mixing environments require robust, reliable components. Ma'anshan Zhongrun Intelligent Equipment Co., Ltd. specializes in precision-cast mixer spare parts:

• High-Wear Liners (Liner Plates)

• Durable Mixing Arms (Agitator Arms)

• Wear-Resistant Blades

Utilizing advanced manufacturing processes and specialized heat treatment, Zhongrun ensures parts are engineered for maximum durability and performance.

Upgrade your mixer's reliability and ease of maintenance!
Contact Zhongrun Intelligent Equipment today for your high-quality concrete mixer spare part needs.