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8-Ton Mechanical Upender Custom-Engineered for Electric Wheel Assembly

Project Overview

An international manufacturer of off-highway mining vehicle powertrains in Katowice, Poland, required a safe and highly stable solution to rotate heavy electric wheel drive components. These components including cast iron bases (1.8 tons), heavy hubs (1.5 tons), ring gears, and drive motors need to undergo a complex 90-degree tilting, 180-degree crane rotation, and subsequent 90-degree return-tilting assembly sequence. Handling these highly machined parts using standard rigging methods posed severe risks of surface scratches and structural misalignment.

To streamline their assembly line, we engineered and manufactured a custom FZ-08 8-ton mechanical upender. This machine incorporates a dual-row chain drive, SEW-Eurodrive motors, Schneider electrical controls, and fully non-metallic contact interfaces. By installing this system, we successfully integrated a secure, repeatable, and scratch-free 90-degree tilting station into the client’s precision assembly workflow.

Challenge & Solution

Challenge

Handling high-value, finish-machined powertrain parts within a rigorous production schedule presented our engineering team with several strict structural and safety parameters to satisfy:

  • Zero-Tolerance Scratch Protection on Finished Metals: The mating surfaces of electric vehicle hubs and gears cannot tolerate any steel-on-steel friction. Any structural metal contact during a 90-degree roll-over could scratch key seals or damage mounting faces, leading to costly components being rejected.

  • Variable Geometry and Mounting Interfaces: The testing components vary significantly in profile, from open-ended gear rings to projecting cylindrical motors. A standard flat platform is inadequate; the platform required custom slots, T-slots for auxiliary tooling, and adjustable V-blocks.

  • Controlled Mechanical Rotation Speed: To prevent kinetic inertia from shifting the heavy, offset loads, the rotation mechanism had to deliver precise, slow jog-mode control, keeping the entire 90-degree cycle under 50 seconds without mechanical backlash.

Solution

We designed the FZ-08 mechanical upender to isolate workpieces from steel contact while providing flexible structural anchoring and highly reliable mechanical kinematics.

  • Dual-Platform Configuration with Non-Metallic Buffer Pegs: We engineered one platform face with a custom U-shaped slot and side T-slots, while the opposing face is flat, featuring a set of removable, adjustable V-blocks. Crucially, all contact points are fitted with specialized, heavy-duty non-metallic protective buffers, ensuring finished metal surfaces never contact structural steel.

  • High-Torque SEW Motor & Double-Strand Chain Drive: We equipped the system with a 3.0 kW premium SEW-Eurodrive motor paired with a heavy-duty 20A-2 double-strand roller chain. This design provides robust mechanical synchronization and includes self-locking characteristics to ensure the platform can safely hold its position at any angle.

  • Advanced Schneider Control Cabinet: We built an external IP55-rated control cabinet with Schneider contactors, complete with phase-loss protection and a jog-control pendant wired with a flexible spring cable. The emergency stop and limit circuits comply strictly with ISO 13849-1 safety standards.

  • Integrated Forklift Mobility Sleeves: To make factory floor reorganization efficient, we welded heavy-duty structural hollow-section sleeves into the base frame, allowing the entire 1.8-ton machine to be relocated safely using standard shop forklifts. For customized system integration, please contact our engineering team.

Technical Specifications

Parameter Delivered Specification / Value
Model Designation FZ-08 Modular Mechanical Upender
Rated Load Capacity 8,000 kg (17,637 lbs)
Tilting Angle 90° (Single-Direction Mechanical Rollover)
Platform Dimensions (L-Shape)
2,000 mm×2,000 mm+2,000 mm×2,000 mm

(6.56 ft×6.56 ftper face)

Tilting Speed
<50

seconds (Standard Jog Mode)

Drive System Motor 3.0 kW SEW-Eurodrive Helical-Bevel Gearmotor
Transmission Chain Specification Heavy-duty 20A-2 Double-Strand Roller Chain
Platform Structural Steel Heavy structural channel (J2001006 mm) with 18mm steel rib reinforcements
Platform Plate Thickness 8 mm (0.31 in) Solid Q235B Plate
Fixture Slot Configuration Integrated M20 T-slots and custom-designed U-shaped slot
Auxiliary Support Tooling One set of removable V-blocks & dual heavy-duty 8-ton self-locking tension belts
Contact Protection Material Non-metallic protective pads/pegs on all workpiece interfaces
Control System Architecture External electrical cabinet with Schneider components, phase-loss & emergency stop protection
Pendant Cable Type High-flexibility coiled spiral spring cable
Machine Frame Self-Weight Approx. 1,800 kg (3,968 lbs)
Equipment Frame Coating RAL7035 Light Gray Industrial Finish

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