Applications
The tractor is the agricultural vehicle par excellence, essential for working in the fields and for many farm-related activities. Its main function is to provide the power needed to tow agricultural equipment and machinery and to carry out activities such as ploughing, sowing, harvesting and related transport operations.
Requirements:
Driving pedals position control
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Monitoring tractor-trailer rotation angles and towed accessories
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Steering angle control
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Hydraulic circuit pressure monitoring
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Hydraulic pump flow rate adjustment
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Checking the position of the three-point hitch
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Requirement:
Driving pedals position control
Accurate control of the position of the driving control pedals (e.g. accelerator) is essential to ensure efficient and safe management of tractor performance. With an accurate sensing system, it is possible to optimise engine response, improve operating comfort and reduce energy consumption. The continuous detection of the pedal position helps to increase safety, ensuring that the vehicle responds reliably and constantly to the needs of the operator.
Solution:
Gefran’s GRA rotary sensor with shaft is a robust and versatile solution that can guarantee stable performance in controlling driving pedals position
Main features:
- Hall contactless technology, which guarantees high measurement stability and long operating life
- Available with redundant output with different electrical interfaces, both analogue and digital
- Resistant to shocks, vibrations and high temperatures
Thanks to these features, the GRA rotary sensor is a reliable and durable choice for applications that require precise control, safety and continuous operation over time.
Requirement:
Monitoring tractor-trailer rotation angles and towed accessories
The monitoring of the rotation angle between tractor and trailer, as well as the angles generated with the various connected elements, plays a key role in ensuring precise and safe manoeuvres. Situations where the joints are subject to mechanical stress can be avoided through accurate angle measurements, which also reduce the risk of collisions during the turning phase and improve the overall stability of the agricultural convoy. This control promotes the more efficient management of operations and greater protection of the equipment.
Solution:
Gefran offers the GR3P rotary sensor with shaft as a reliable and robust solution, specifically designed for agricultural applications.
Main features:
- Hall contactless technology, which guarantees high measurement stability and long operating life
- Sealed with resin, for maximum protection against external agents
- High resistance to shocks, vibrations and extreme temperatures
Thanks to these features, the GR3P rotary sensor is a reliable and durable choice for applications that require precise control, high durability and continuous operation over time.
Requirement:
Steering angle control
Controlling the steering angle is essential to guarantee maximum precision and safety when manoeuvring a tractor. A reliable detection system allows the operator to keep the turning radius under control, optimising vehicle positioning even in confined spaces or complex terrain. This monitoring reduces the risk of instability, increases the fluidity of operations and helps to preserve the life and efficiency of the machine.
Solution:
For the precise adjustment of the flow rate in the hydraulic pump, Gefran recommends the GRN shaftless rotary sensor.
Main features:
- Compact dimensions, for easy integration in small spaces
- High resistance to vibrations, ensuring stability and durability over time.
- Available with analogue and digital interfaces
Thanks to these features, the GRN shaftless rotary sensor is a reliable and durable choice for applications that require precise control, high durability and continuous operation over time.
Requirement:
Hydraulic circuit pressure monitoring
Monitoring the pressure in the hydraulic circuit is an essential requirement to ensure tractors operate correctly and maintain their operational efficiency. An accurate control system allows the prompt detection of anomalies or out-of-threshold values, preventing failures that could compromise safety and cause machine downtime. This functionality not only ensures continuity in performance but also helps to reduce maintenance costs and prolong the life in the hydraulic system components.
Solution:
For precise and safe control of hydraulic circuit pressure, Gefran recommends the KM series pressure sensors.
Main features:
- Compact in size, making them easy to install even in confined spaces;
- High resistance to shock, vibration and high temperatures;
- SIL2/PLd certified, ensuring high standards of functional safety.
Thanks to these features, KM pressure sensors are a practical and robust solution for monitoring hydraulic circuit pressure, combining safety, efficiency and reliability.
Requirement:
Hydraulic pump flow rate adjustment
The adjustment of the hydraulic pump is a fundamental aspect for the correct operation of the power systems in the machine. Accurate control of valve opening and closing allows the optimal modulation of fluid flow rate, adapting performance to real operational needs. This precise management improves the energy efficiency of the circuit and reduces component wear, increasing the overall life of the system and ensuring greater reliability and safety in operations.
Solution:
For the precise adjustment of the flow rate in the hydraulic pump, Gefran recommends the GRN angular sensor without shaft because:
- it has compact dimensions, for easy integration into small spaces.
- it is highly resistant to vibrations, ensuring stability and durability over time.
- is available with analogue and digital interfaces.
Requirement:
Checking the position of the three-point hitch
The accurate control of the position of the three-point hitch, in particular of the lower links, is crucial to ensure optimal management of the tools connected to the tractor. The precise adjustment of the angular positioning makes it possible to effectively adapt working inclination and depth, improving the quality of agricultural operations. This monitoring helps to reduce mechanical stress on the connecting elements, increasing operational efficiency and ensuring greater safety and reliability during use in the field.
Gefran offers a complete range of solutions for adjusting the position of the three-point hinch, combining linear and rotary sensors to meet all measurement requirements.
RK-5 linear position sensor
Key features:
- Installation directly inside the hydraulic cylinder, with no external encumbrance
- Contactless magnetostrictive technology, eliminating wear and ensuring long service life
- High resistance to shocks, vibrations, and contaminants
GRA rotary sensor with shaft
Key features:
- Available with single or redundant output for applications with high safety requirements
- Supports analog and digital interfaces (CANopen, SAE J1939) for versatile integration
- Robust design, resistant to shocks and vibrations
Thanks to this combination of linear and rotary measurement technologies, Gefran provides a complete and reliable control system capable of delivering consistent performance even in the harshest operating conditions.
Operating principle:
In a tractor, the power generated by the engine is transmitted to the moving parts and related devices, ensuring traction and operational capabilities in a wide range of agricultural and industrial applications. In addition to providing motive power, it manages complex systems such as steering, hydraulic circuits for lifting and handling, cab positioning and three-point linkage.
For all these operations to be carried out safely, accurately and efficiently, tractors must be able to rely on the constant control of mechanical, hydraulic and stability parameters.
Requirements and technology:
Tractors must integrate reliable sensor solutions capable of operating in hostile environments while being resistant to vibrations, shocks and damaging external agents.
The main technological requirements are related to:
- Driving pedals position control
• Vehicle and towed accessory tilt monitoring
• Steering angle control
• Hydraulic circuit pressure monitoring
• Hydraulic pump flow rate adjustment
• Three-point linkage position control
Gefran satisfies these requirements with a complete range of rotary, tilt, pressure and linear position sensors, designed to ensure reliable performance, precision and durability over time.
