Idler Shaft Research Articles

SLIP HANDLING ON CONVEYORS TO EXTEND THE LIFE OF CONVEYORS AT THE DEPARTURES TERMINAL

The departure terminal’s Abdulrachman Saleh Malang Airport has facilities as an improvement in services for airplane passengers, such as aviobridges, escalators, travelators, elevators, and conveyors. Conveyors are mechanical systems that transfer luggage considerably from one location to another. To facilitate routing procedures, an effective model for conveyor operations must be developed, as well as the maintenance operation. This study aims to determine the consequences of lack of maintenance on the conveyor belt, namely the occurrence of slack in the belt so that it continues to experience abrasions on the sides of the conveyor and tears on the edges of the belt. The tear causes the fibers to unravel so that slip occurs between the belt and the upper idler shaft (carry idler) so that the idler cannot rotate. This causes the conveyor belt to run and malfunction. This research uses a qualitative method of conducting an exploratory study of the conveyor belt using experimental description research by describing and analyzing the existing conditions on the conveyor. The result is that there are belt fibers that cause slippage on the conveyor. Handling that can be done is cutting the fiber belt. The conclusion is that many factors can cause slippage on the conveyor belt, such as too heavy a load, old belt age, and the distance between the collecting belt conveyor and the transfer line conveyor. Maintenance can be done on the equipment to avoid slippage on the conveyor. Conveyor maintenance activities consist of two types, namely unplanned maintenance and planned maintenance. Unplanned maintenance is also called reactive maintenance or emergency maintenance.

Service Platform for Robotic Disassembly Planning in Remanufacturing

Remanufacturing is being paid much attention due to environmental protection and resource re-utilization. Disassembly is an inevitable step of remanufacturing and it is always finished by the manual labor. Robotic disassembly helps to improve the automation of disassembly process, while robotic disassembly planning helps to improve the efficiency of robotic disassembly. However, the existing research on robotic disassembly planning seldom integrates the physical industrial robots and then provides convenient services for the users. In this paper, the framework of service platform for robotic disassembly planning in remanufacturing is studied. The database of the service platform is designed, and the data communication method between the software system and KUKA industrial robots is studied. After that, based on the physical facilities, this service platform is implemented using MyEclipse software. The developed service platform is convenient for the users to access the methods of robotic disassembly planning and the connected industrial robots can also execute the optimal disassembly solutions through the data communication method after the optimal disassembly solutions are obtained. Finally, case study based on an idler shaft is conducted to verify the developed service platform for robotic disassembly planning.

1319 摩滅したコンベアベルトの走行抵抗の起歪キャリアアイドラ軸を用いた測定方法の提案

The aim of this study was to develop a specific additional device to in-situ evaluate the changes of resistance forces of belt conveyor at the locations of carrier idlers supporting at the string part, in order to estimate the wear damage of the conveyor belt during driven state the at the site. Some practical carrier idlers were modified to attach the strain gages at the center position of the shaft. The changes of driving resistance and carrying load acting on the carrier idler shaft were simultaneously observed by measuring the difference of bending strains directly. The penetrative displacement of the carrier idler into the belt was measured to evaluate the deformation of conveyor belt due to the compressive force in thickness direction. The bending stiffness of the belt was measured by three point bending test to examine the effect of the difference of the bending stiffness by wear damage on the driving resistance. Test results showed that the data of measured resistance forces by the proposed device in this study were almost reasonable compared with those of known results by other conventional methods. It was said that proposed method was effective to explain the behaviors of resistance forces of the belt conveyor around the carrier idler.

Study of Shaft Drive Continuously Variable Transmission (5th Report, Driving by Backup Disk for Increase of Torque Capacity)

A novel CVT mechanism (a shaft drive CVT) was developed by the authors. In the mechanism, the input and output shafts with conical disks are parallel and an idler shaft with conical rollers at both ends is placed perpendicular to the input/output shafts. This idler shaft transmits torque from the input shaft to the output shaft and its linear motion causes the speed to vary by changing the contact point between the input/output disks and the idler roller. The backup disks are connected to the input/output shafts and do not contribute to power transmission. In this paper, we propose a mechanism to transmit torque between the backup disks and input/output shafts to enlarge the amount of transmitted torque. A gear train was added behind the backup disk for new torque path. Its effect is examined and confirmed by the experiment using the prototype CVT. The efficiency of 3 percentage points was improved and the torque capacity became twice by the contribution of backup disk.

Perancangan Fixture Pada Proses Sekrap Dan Freis Untuk Memproduksi Komponen Poros Idler

Idler shaft is the engine components that are often produced in the automotive field, the shaft serves to continue the effort together with the rotation. Making idler shaft through several machining processes such as lathes, sekrap, and Freis. At this time laporn designed tools to process and Freis sekrap in the production of idler shaft. The design of this tool using the clamping screw. Placed on the front clamping tools for process sekrap. Based on the results obtained, the time spent with the tools and shorter setup times smaller than that obtained without the tools, so the production cost by using the tools is greater than the production costs without the tools in this case the production shaft idler. Keywords : Fixture, clamping, idler shaft

Performance of a low-spin disk for a shaft-drive continuously variable transmission

A novel continuously variable transmission (CVT) mechanism (a shaft-drive CVT) was developed by the present authors. In the mechanism, the input and output shafts with conical disks are parallel and an idler shaft with conical rollers at both ends is placed perpendicular to the input—output shafts. This idler shaft transmits torque from the input shaft to the output shaft and its linear motion causes the speed to vary by changing the contact point between the input—output disks and the idler roller. In this paper, the use of a disk with a concave shape is proposed in order to decrease the amount of spin caused by the change in the contact point, because the spin has an adverse effect on traction contact performance and is responsible for an increase in power loss. The design procedure of the novel concave disk and the roller is discussed and their effect is evaluated using a prototype CVT. The speed efficiency was improved to 1.6 points in the case of a transmitted power of 0.6kW.

Study of Shaft Drive Continuously Variable Transmission (1st Report, Analysis of Mechanism and Prototype)

The crossed axle traction drive developed by the authors is applied to a new mechanism of CVT. The input and output shafts with conical disks are parallel and a idler shaft having conical rollers at both ends is placed perpendicular to the input/output shafts. This idler shaft transmits torque from the input shaft to the output shaft and its movement produces the speed variation by changing the contact point between the input/output disk and the idler roller. The purposes of this study are to propose the new CVT mechanism, to develop a prototype to confirm the CVT to work and to evaluate the transmission efficiency. The design procedure of disk and roller are shown by geometrical analysis and the method to apply contact force by using a loading cam is examined. The influence of a spin caused by changing the contact point and torque loss of bearings to the transmission efficiency are evaluated. The range of speed changing ratio of the prototype is 0.5 to 2. The efficiency of 75% was obtained in case of input torque 10 Nm at uniform speed.

Study of Shaft Drive Continuously Variable Transmission (2nd Report, Effect of Low Spin Disk)

The novel mechanism CVT (Shaft Drive CVT) was developed by the authors. The input and output shafts with conical disks are parallel and an idler shaft having conical rollers at both ends is placed perpendicular to the input/output shafts. This idler shaft transmits torque from the input shaft to the output shaft and its linear motion produces the speed variation by changing the contact point between the input/output disk and the idler roller. The purpose of this report is to design a curved shape of disk to decrease an amount of spin caused by the changing of contact point, because the spin has an adverse effect on traction contact performance and is responsible for an increase of power loss. The design procedure of novel concave disk and roller is shown and their effect is evaluated by using the prototype CVT. The speed -transmitted efficiency of 1.5% was improved in case of transmitted power 0.7 kW.

118 交差軸トラクションドライブを応用した CVT の研究 : 第 2 報試作機の設計と評価

The crossed axle traction drive developed by authors has been applied to the new mechanism of CVT. The input and output shafts attaching conical disks are parallel and a idler shaft having conical roller at the end is placed across the input/output shafts. The relation between the movements of each axis to change a ratio is analyzed geometrically. This report deals with the development of prototype and evaluation of efficiency of the transmission. From the result of experiments, the efficiency is 77% in case of the constant loading force.

Transmission Error of Three Axes Gear System.

The transmission error and the gear noise of a three axes gear system are analyzed with the object of a transfer for recreational vehicles. It is proved that each one of measured transmission errors appearing in the pair of input and idler gears and the pair of output and idler gears also in a three axes gear system is able to be treated by an analytical method of a transmission error for a two axes gear pair. The transfer gear noise is estimable using the expression by two transmission errors for the total exciting force applied to three axes considering the force interference at the idler shaft, as the gear noise estimation index. The force interference at the idler shaft and its influence on the gear noise, on which the proposed index is based, are confirmed by experiments.