As global construction and mining projects expand, wheel loaders are incredibly useful machines for materials handling and loading operations, amongst others. The hydraulic pump motor of a wheel loader is the key to powering the hydraulic functions of lifting, tilting and auxiliary. New advances in hydraulic pump motor technology will allow for greater operational efficiency, greater precision, and improved reliability of equipment throughout the construction industry.
Improvement of Hydraulic System Performance
The hydraulic pump motor is the source of the mechanical power used to create the hydraulic pressure and flow required for the operation of a wheel loader. A motor that is stable, with its output constant, will produce the ability to raise a bucket smoothly, tilt it accurately and consistently perform the auxiliary hydraulics. With improved design of the motor there is going to be a corresponding improvement in reliability of the hydraulic response (or action) of the motor under severe loads and in demanding circumstances. This reliability enhances both the productivity and confidence of the operator while he/she performs repetitive loading cycle tasks.
Designed for Heavy Duty Environment
Heavy duty wheel loaders operate in extreme environments (for example; construction sites, quarries, farmland and mining operations) where the equipment is exposed to the elements (dust, vibration, moisture and temperature). As such, manufacturers have been designing the hydraulic pump motor with heavy-duty construction, advanced insulating materials and improved thermal management systems to withstand the extreme nature of the working environment. Reliability of the hydraulic pump motor leads to fewer times the equipment must be taken out of service for scheduled maintenance, and therefore reduces unplanned down time, which is essential to maintaining continuing operations to support busy jobs.
Improvement of Control and Energy Consumption
Highly sophisticated control systems often accompany hydraulic pump motors found within modern wheel loaders. The sophisticated control systems allow for accurate regulation of pump speed and hydraulic flow, resulting in smoother operation of a machine and improved energy use due to more effective operation during partial loading of a machine. The improvement of control of the hydraulic pump motor will use less energy and will continue to support the industry’s transition to more sustainable equipment production.
Support of Electrification and Hybrid Technology
Electricity is rapidly becoming a major power source for construction equipment. As a result, electric motor hydraulic pump motors are increasingly being employed with hybrid technology and electric wheel loaders. Hydraulic systems based on electric motors are quieter, more efficient and produce lower levels of emissions than traditional hydraulic systems. These major benefits of electric powered equipment are consistent with regulatory requirements and market demand for environmentally friendly construction equipment.
Outlook for the Future
As construction equipment continues to evolve and expand, the hydraulic pump motor will assume an even greater importance for the efficient operation of construction machinery. Continued innovation in electrical efficiency, durability and equipment design will further improve the efficiency of hydraulic pump motors and create much safer and more productive work environments for all involved. Manufacturers focused on application specific hydraulic pump motors will be best positioned to meet the evolving demands of the global construction equipment market.
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