Pivot Assembly for Sany quotation

Pivot Assembly for Sany quotation

Concrete Mixer Chute Pivot

Color:Customized

Lead Time:30 days

ISO 9001:2015 certification

The length of the rod: 320/ 333/ 347/ 358/400

Roughness : Ф 39/ 43/ 45/ 50/ 55

1. Product Parameter (specification)

A pivot assembly for Sany is an important component in Sany's construction machinery, such as concrete mixer trucks. It mainly consists of parts like the pivot shaft, bearings, and connecting brackets, and has the following characteristics and functions:

Structure and Components

Pivot Shaft: Usually made of high - strength alloy steel, it is the core component of the pivot assembly, responsible for bearing the weight of connected components and the forces generated during operation. It needs to have high strength and rigidity to withstand large torques and loads.

Bearings: High - quality bearings are installed on the pivot shaft to ensure its smooth rotation. These bearings can bear large radial and axial loads, reducing friction and wear during the rotation of the pivot shaft and improving the efficiency and service life of the pivot assembly.

Connecting Brackets: Used to connect the pivot shaft to components such as the chute and drum. They are generally made of steel plates through welding or forging processes and have specific shapes and structures to adapt to the installation and connection requirements of different components

2.1 Material Selection: Precise Adaptation of High-Strength Alloy Steel

As the core force-bearing component of the entire assembly, the material selection of the pivot shaft directly determines the service life and operational safety of the product. Meanwhile, the material has good machinability and heat treatment processability, laying a solid foundation for subsequent precision machining.

2.2 Precision Machining Process: Ensuring Assembly Accuracy and Operational Stability

The machining process of the pivot shaft strictly complies with Sany Heavy Industry's original factory technical standards. Firstly, the alloy steel blank is shaped through forging process to eliminate internal defects such as porosity and looseness, and improve material density; subsequently, rough turning is performed to remove excess stock and initially form the shaft structure; in the semi-finishing stage, the key dimensional tolerances of the shaft are precisely controlled to reserve a reasonable allowance for finishing.

2.3 Core Performance Advantages: Reliability Guarantee for Adapting to Harsh Working Conditions

Based on high-quality materials and precision machining, the pivot shaft has two core performance advantages: first, super strong load-bearing capacity, which is fully suitable for the force requirements of concrete mixer trucks under extreme working conditions such as full-load transportation and chute angle adjustment; second, excellent wear resistance. The surface of the shaft is subjected to oxidation treatment to form a dense oxide film, which, combined with the lubrication synergy of high-precision bearings, can effectively reduce friction and wear during rotation, and the service life is increased by more than 30% compared with ordinary rotating shafts.

3. Adaptable Models and Application Scenarios

The pivot assembly and its core pivot shaft can be precisely adapted to the entire series of Sany Heavy Industry concrete mixer trucks, including mainstream models such as SYM5160GJB1E, SYM5250GJB1D, and SYM5310GJB3E. It is widely used in various concrete pouring construction sites such as urban road construction, bridge engineering, real estate development, and water conservancy projects. It is responsible for realizing the multi-angle adjustment of the mixer truck chute and ensuring the precise and efficient transportation of concrete from the mixing drum to the pouring point. Whether it is conventional construction in plain areas or operation scenarios in complex terrains such as mountainous areas and plateaus, this product can stably perform its functions and provide a reliable guarantee for the smooth progress of the construction schedule.

4. Quality Control and Certification Guarantee

The entire production process of the product strictly complies with the ISO 9001:2015 quality management system standard, and a full-process quality control system from raw material procurement, processing and manufacturing, finished product inspection to outbound delivery has been established. In the raw material procurement link, strict incoming inspection is carried out on core raw materials such as alloy steel blanks, bearings, and steel plates, and relevant data such as material certificates and performance test reports are verified to ensure that the raw materials meet technical requirements; during the processing process, multiple quality inspection nodes are set up to conduct real-time inspection on key dimensions, processing accuracy, heat treatment performance, etc., so as to timely discover and solve quality problems in the processing process; in the finished product inspection link, comprehensive inspections such as overall assembly accuracy inspection, load-bearing performance test, rotation flexibility test and corrosion resistance test are carried out on the pivot assembly, and the product can be delivered only after passing the inspection. The perfect quality control system ensures that each product can meet the original factory quality standards of Sany Heavy Industry.

5. Installation and Maintenance Recommendations

5.1 Installation Notes

Before installation, it is necessary to clean the surfaces of the pivot shaft, bearings and connecting brackets to remove oil stains, dust and impurities; during installation, it is necessary to ensure the coaxiality of the pivot shaft and bearings, avoid forced knocking and assembly, and prevent damage to the shaft body and bearings; the connecting bolts between the connecting bracket and the chute, mixing drum and other components should be tightened according to the specified torque and equipped with lock washers to prevent bolt loosening during operation. After installation, manually rotate the chute to check whether the rotation is smooth and free of jamming, abnormal noise and other abnormal conditions.

5.2 Maintenance Recommendations

It is recommended to perform regular maintenance on the pivot assembly, once every 3 months under normal operating conditions and once every 1 month under harsh operating conditions. Maintenance content includes: checking the lubrication status of the bearings; if the grease is insufficient or deteriorated, it is necessary to timely supplement or replace with special lithium-based grease; checking whether there are wear, corrosion and other defects on the surface of the pivot shaft; if there is slight wear, polishing treatment can be performed; if the wear is severe, it is necessary to replace it in time; checking the tightness of the connecting bolts and tightening them in time if looseness is found; cleaning dust, concrete slurry and other debris on the surface of the bracket to avoid corrosion of the bracket structure. Reasonable maintenance can effectively extend the service life of the product and improve the operational safety of the equipment.

2. Production details