Streamlined Construction Processes Spherical Hobs Gearbox Hydromill Cutting Machine

Advantages of Spherical Hobs in Hydromill Cutting

1. Cost Reduction: Implementing spherical hobs significantly lowers the costs associated with hydromill cutting in hard rock, enabling quicker project completion.

2. Simplified Operations: Eliminating the need for precutting holes streamlines machinery requirements and construction processes.

3. Extended Operating Time: The hob-tooth hydromill wheel allows for continuous operation for up to 100 hours, reducing the frequency of hydromill lifts and extending overall project timelines while lessening labor needs.

4. Lower Maintenance Requirements: The hydromill module operates with reduced strain on the gearbox, enhancing efficiency and cutting down both maintenance time and costs.

5. Minimal Environmental Disruption: This technology produces minimal ground disturbance, making it well-suited for projects near existing structures.

6. Enhanced Cutting Deflection: The design improves deflection capabilities, making it effective for hydromill cutting in difficult rock formations.

7. High Precision: Trenches can be maintained with vertical alignment accuracy of up to 1‰, ensuring superior quality in results.

8. Fuel Efficiency: The system realizes over 20% in fuel savings, averaging 73L/h with a CAT C18 engine, promoting energy efficiency and environmental sustainability.

To ensure the effective operation of the spherical hob, it is essential to apply sufficient downforce, which is crucial for its success. This solution primarily involves adding a pressure mechanism between the cutting module body and the wheel, allowing for modifications to the existing module at a low cost. With the increase in downforce, the original gearbox's load-bearing capacity may become inadequate, necessitating the redesign of a larger gearbox. Due to constraints related to wheel size, the original shock absorber ring must be removed. Instead, this approach positions the shock-absorbing device between the motor reducer and the module.

The crowd device utilizes a support cylinder and an arm to hold the plate against the wall. One end of the pressurization cylinder is attached to the plate, while the other end connects to the module. As the pressurization cylinder contracts, it exerts downward pressure on the module. The oil circuits for both the support cylinder and the pressurization cylinder are integrated with the four oil circuits of the correcting plates located at the lower front and rear sides of the original module. This design eliminates the need for additional hydraulic circuits, making modifications relatively straightforward. The pressurizing mechanism leverages the support cylinder and arm to secure the plate against the diaphragm wall, with one end of the pressurization cylinder hinged to the support plate and the other to the module, providing necessary downward pressure as it contracts.

Module Parameter with SC-135

Module Parameters with XCMG 120