I. Product Definition and Functions
• Definition:
A hydraulic wheel walking motor with brake is an integrated electromechanical system that combines hydraulic drive and braking capabilities, designed for precise control of movement speed and stopping position in vehicles or equipment.
• Functions:
• Walking Drive: Powers wheel rotation via a hydraulic motor to enable equipment movement.
• Braking Control: Features an internal braking system for rapid wheel stoppage, ensuring safe parking or emergency braking.
II. Structural Components
1. Hydraulic Motor Section
• Type: Typically radial piston motors or axial piston motors, selected based on application requirements.
• Features: High efficiency, low noise, long service life, with some models supporting speed adjustment.
• Displacement & Pressure:
• Motor displacement determines output torque (e.g., up to750 cm³/revfor some models).
• System pressure affects operational capacity (e.g., max.450 bar).
2. Braking System
• Type: Hydraulic brake, utilizing hydraulic oil pressure for braking.
• Working Principle:
• During braking, hydraulic oil is pressurized into the brake cylinder, pushing the piston to clamp the brake pads against the brake disc, generating friction torque for deceleration or stopping.
• Features: Rapid response, reliable braking, with some advanced models offering power-off braking (automatic braking when power is lost).
3. Transmission Mechanism
• Type: Gear or chain transmission, selected based on torque transfer and speed adjustment needs.
• Features: Ensures efficient torque transfer from the hydraulic motor to the wheels while enabling speed regulation.
4. Wheel Assembly
• Material: Rubber, polyurethane, or metal, chosen based on ground conditions and load requirements.
• Design: Wheel hub structure and tread pattern influence walking stability and traction.
III. Technical Specifications
1. Hydraulic Motor Parameters
• Power: Typically expressed in watts (W) or kilowatts (kW), determining driving capability (e.g., max.50 kWfor some models).
• Voltage: Not directly applicable to hydraulic systems, but associated electrical control systems may have specific voltage requirements.
• Speed: No-load and rated speeds affect walking velocity (e.g., max.700 rpm).
2. Braking Parameters
• Braking Torque: Represents the maximum braking torque generated by the system (e.g., up to4,770 N·mat 100 bar pressure).
• Braking Time: Time from brake activation to full wheel stoppage, dependent on system response and hydraulic oil flow characteristics.
3. Transmission Parameters
• Gear Ratio: Determines the ratio of output speed to input speed.
• Efficiency: Energy loss percentage during transmission.
IV. Application Scenarios
1. Industrial Vehicles
• Forklifts, stackers, AGVs (Automated Guided Vehicles), requiring precise movement and stopping control.
2. Agricultural Machinery
• Harvesters, tractors, needing stable walking and reliable braking during field operations.
3. Logistics Equipment
• Conveyors, sorters, requiring continuous movement and frequent starts/stops.
4. Specialty Vehicles
• Fire trucks, ambulances, demanding rapid response and reliable braking in emergencies.
V. Selection and Maintenance
1. Selection Guidelines
• Choose hydraulic motor power, brake type, and transmission mechanism based on equipment weight, walking speed, and braking requirements.
• Consider environmental factors (e.g., temperature, humidity, corrosion) affecting material selection.
• Evaluate system pressure and flow demands to ensure compatibility with hydraulic motor and brake performance.
2. Maintenance Recommendations
• Regular Inspections:
• Check braking system performance for reliability.
• Monitor hydraulic oil levels and quality, replenishing or replacing as needed.
• Cleaning & Upkeep:
• Clean hydraulic motors and transmission components to prevent dust and debris accumulation.
• Inspect and tighten all connections to prevent loosening and leaks.
• Replacement of Wear Parts:
• Regularly replace hydraulic oil filters, brake pads, and other consumables to extend service life.
• Professional Servicing:
• If faults or performance degradation occur, promptly contact professional technicians for inspection and adjustment.
