Related Experiment Video
Updated: Jun 25, 2026
09:13
A Vibrotactile Feedback Device for Seated Balance Assessment and Training
Published on: January 20, 2019
Ride vibration on tractor-implement system
1Agricultural Energy and Power Division, Central Institute of Agricultural Engineering, Bhopal, India. crmehta@ciae.mp.nic.in
Applied Ergonomics
|June 16, 2000
Summary
Tractor ride vibrations increase with speed, posing health risks like deafness and spinal issues. Operator exposure should be limited to 2.5 hours during ploughing and harrowing to prevent injury.
Area of Science:
- Agricultural Engineering
- Occupational Health and Safety
Background:
- India leads global tractor manufacturing, with tractors crucial for farming and transport.
- Tractor vibrations are linked to operator health issues, including deafness and spinal disorders.
- The impact of tractor implements on ride quality in India is not well-understood.
Purpose of the Study:
- To quantify ride vibration in a low-horsepower tractor-implement system.
- To assess vibration levels at the operator-seat interface under various operating conditions.
Main Methods:
- Vibration measurements were taken along longitudinal, lateral, and vertical axes.
- Data were collected under different operating conditions, including varying forward speeds.
- Vibration levels were evaluated against ISO 2631/1 (1985) and BS 6841 (1987) standards.
Main Results:
- Acceleration levels generally increased with forward travel speed.
- No significant difference in vibration was found between tar-macadam and farm roads during transport.
- Measured vibration levels were assessed against international standards.
Conclusions:
- Tractor operator exposure should not exceed 2.5 hours for ploughing and harrowing.
- Extended exposure can lead to severe discomfort, pain, and injury.
- Understanding and mitigating tractor vibrations is crucial for operator health.
Related Concept Videos
01:19Concept of Resonance and its Characteristics
If a driven oscillator needs to resonate at a specific frequency, then very light damping is required. An example of light damping includes playing piano strings and many other musical instruments. Conversely, to achieve small-amplitude oscillations as in a car's suspension system, heavy damping is required. Heavy damping reduces the amplitude, but the tradeoff is that the system responds at more frequencies. Speed bumps and gravel roads prove that even a car's suspension system is not immune...
01:21Rolling Resistance
When a solid cylinder rolls steadily on a rigid surface, the normal force applied by the surface on the cylinder is perpendicular to the tangent at the contact point. However, since no materials are entirely rigid, the surface's reaction to the cylinder involves a range of normal pressures.
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
For instance, imagine a hard cylinder rolling on a comparatively soft surface. The cylinder's weight compresses the surface beneath it. As the cylinder moves, the material in front of it slows down due to...
01:17Rolling Resistance: Problem Solving
Rolling resistance, also known as rolling friction, is the force that resists the motion of a rolling object, such as a wheel, tire, or ball, when it moves over a surface. It is caused by the deformation of the object and the surface in contact with each other, as well as other factors like internal friction, hysteresis, and energy losses within the materials. Rolling resistance opposes the object's motion, requiring additional energy to overcome it and maintain movement. In practical...
01:16Design of Transmission Shafts
The design of a transmission shaft is governed by two primary specifications: the power it transmits and its rotational speed. These parameters guide the selection of the shaft's material and cross-sectional dimensions, ensuring that the material's maximum shearing stress remains within the elastic limit while transmitting the desired power at the given speed. The system's power is intrinsically linked to the applied torque. The torque applied to the shaft can be calculated by reconfiguring the...
01:09Transmission Shafts: Problem Solving
Designing a solid shaft that transmits power from a motor to a machine tool involves a series of calculations to ensure the shaft can withstand the stresses applied by bending moments and torques. First, calculate the torque exerted on the gear, considering the power transmitted by the shaft and its rotational speed. Following this, compute the tangential forces acting on the gears, which directly relate to the torque and the gear radius.
Next, use bending moment diagrams for the shaft to...
Next, use bending moment diagrams for the shaft to...
01:19Vibrating Concrete
Mechanical vibrators are instrumental in compacting newly poured concrete within formwork and around reinforcements. This process is essential to eliminate trapped air pockets and establish a dense concrete mass. One widely used method is vibrating by internal vibrators, often referred to as a poker vibrator or immersion vibrator. It is rapidly inserted through the full depth of the freshly laid concrete and slightly extends into the layer below it (which remains in a plastic state). Consistent...