Abstract
In cooperation with the Skogskraft Project, studies have been made of different types of weighing equipment. Calculations based on the results illustrate the gains that can be obtained from good weighing on chippers or shuttles. Studies have been made of two different hydraulic weighers mounted on chippers. The studies show that this type of weighing equipment is inaccurate and the weighing are time demanding. The measurements are influenced by the temperature of the oil and the internal friction of the weigher`s lift cylinders. Weighing equipment consisting of load cells with thread strain gauges in the chip bin arms was mounted on a chipper. The experiment demonstrated that it is not possible to achieve satisfactory accuracy by measuring the weight of the chip bin by suspending it from one of its sides. The equipment is not only sensitive to lateral sloping but also to changes in the centre of gravity. In order to solve this problem, four load cells were fitted beneath the frame supporting the chip bin on a shuttle. The study showed that the equipment has excellent reliability and is almost completely independent of minor slopes, laterally or longitudinally. In addition, the weighing can be done continuously, and thus
More>>
Citation Formats
Norden, B.
Weighing equipment on chippers or shutters for weighing chips; Vaagutrustning paa flisare.
Sweden: N. p.,
1993.
Web.
Norden, B.
Weighing equipment on chippers or shutters for weighing chips; Vaagutrustning paa flisare.
Sweden.
Norden, B.
1993.
"Weighing equipment on chippers or shutters for weighing chips; Vaagutrustning paa flisare."
Sweden.
@misc{etde_10150443,
title = {Weighing equipment on chippers or shutters for weighing chips; Vaagutrustning paa flisare}
author = {Norden, B}
abstractNote = {In cooperation with the Skogskraft Project, studies have been made of different types of weighing equipment. Calculations based on the results illustrate the gains that can be obtained from good weighing on chippers or shuttles. Studies have been made of two different hydraulic weighers mounted on chippers. The studies show that this type of weighing equipment is inaccurate and the weighing are time demanding. The measurements are influenced by the temperature of the oil and the internal friction of the weigher`s lift cylinders. Weighing equipment consisting of load cells with thread strain gauges in the chip bin arms was mounted on a chipper. The experiment demonstrated that it is not possible to achieve satisfactory accuracy by measuring the weight of the chip bin by suspending it from one of its sides. The equipment is not only sensitive to lateral sloping but also to changes in the centre of gravity. In order to solve this problem, four load cells were fitted beneath the frame supporting the chip bin on a shuttle. The study showed that the equipment has excellent reliability and is almost completely independent of minor slopes, laterally or longitudinally. In addition, the weighing can be done continuously, and thus does not require extra time. A further advantage was that the weighing was not affected by the position of the chip bin. This makes it possible, without loss of time, to divide the chips from the bin among several containers and simultaneously register the weight in each container. 3 refs, 14 figs, 10 tabs}
place = {Sweden}
year = {1993}
month = {May}
}
title = {Weighing equipment on chippers or shutters for weighing chips; Vaagutrustning paa flisare}
author = {Norden, B}
abstractNote = {In cooperation with the Skogskraft Project, studies have been made of different types of weighing equipment. Calculations based on the results illustrate the gains that can be obtained from good weighing on chippers or shuttles. Studies have been made of two different hydraulic weighers mounted on chippers. The studies show that this type of weighing equipment is inaccurate and the weighing are time demanding. The measurements are influenced by the temperature of the oil and the internal friction of the weigher`s lift cylinders. Weighing equipment consisting of load cells with thread strain gauges in the chip bin arms was mounted on a chipper. The experiment demonstrated that it is not possible to achieve satisfactory accuracy by measuring the weight of the chip bin by suspending it from one of its sides. The equipment is not only sensitive to lateral sloping but also to changes in the centre of gravity. In order to solve this problem, four load cells were fitted beneath the frame supporting the chip bin on a shuttle. The study showed that the equipment has excellent reliability and is almost completely independent of minor slopes, laterally or longitudinally. In addition, the weighing can be done continuously, and thus does not require extra time. A further advantage was that the weighing was not affected by the position of the chip bin. This makes it possible, without loss of time, to divide the chips from the bin among several containers and simultaneously register the weight in each container. 3 refs, 14 figs, 10 tabs}
place = {Sweden}
year = {1993}
month = {May}
}