Analisa Mekanisme Winch Device Pada Truck Crane Zoomlion QY25D

Winch device on the truck crane is a useful component for pulling the load vertically by using a wire rope as the medium. winch device is divided into several components, among others: Winch motor, winch brake, and winch reducer. This analysis aims to determine the working mechanism of each component on the winch device and the magnitude of the forces that work. Winch motor is a component that converts pressure from main pump to mechanical movement. Winch brake functions to engage and disengage clucth and disk that serves to release cylinder block and lock cylinder block on winch motor, winch reducer serves to reduce the spin of winch motor but increase torque so the winch device can play the drum on the winch device from the truck cran

Winch having cable position and load indicators Patent

Design and characteristics of device for showing amount of cable payed out from winch and load impose

Owner challenges on major projects: The case of UK government

Many studies agree that owner organisations are important for successful project organising, but they tend to focus on particular aspects of project organising rather than providing a holistic analysis of owners as organisations. Our objective is to collect evidence of the full range of challenges public sector owners face in managing their major projects. After reviewing the literature on owner organisations, we carry out a case survey of 26 major projects to identify the principal challenges using a content analysis of UK National Audit Office Value for Money reports. Our original contribution is that the findings provide the first comprehensive picture of the full range of challenges of project organising faced by owner organisations. These findings push us theoretically to extend the scope of research in project organising to identify an extended core set of dynamic capabilities for project owner organisations to address these challenges

Tensile force monitoring on large winch-assist forwarders operating in British Columbia

The forest industry around the world is facing common challenges in accessing wood fiber on steep terrain. Fully mechanized harvesting systems based on specialized machines, such as winch-assist forwarders, have been specifically developed for improving the harvesting perfor- mances in steep grounds. While the mechanization process is recognized as a safety benefit, the use of cables for supporting the machine traction needs a proper investigation. Only a few studies have analyzed the cable tensile forces of winch-assist forwarders during real operations, and none of them focused on large machines normally used in North America. Consequently, a preliminary study focused on tensile force analysis of large winch-assist forwarders was conducted in three sites in the interior of British Columbia during the fall of 2017. The results report that in 86% of the cycles, the maximum working load of the cable was less than one-third of the minimum breaking load. The tensile force analysis showed an expected pattern of minimum tensile forces while the forwarders were traveling or unloading on the road site and high tensile forces when operating on steep trails, loading or traveling. Further analysis found that the maximum cycle tensile forces occurred most frequently when the machines were moving uphill, independently of whether they were empty or loaded. While the forwarders were operating on the trails, slope, travel direction, and distance of the machines from the anchor resulted statistically significant and able to account for 49% of tensile force variability. However, in the same conditions, the operator settings accounted for 77% of the tensile force variability, suggesting the human factor as the main variable in cable tensile force behavior during winch-assist operations

Educational cultural analysis of language assessment rubrics: a case study of Japanese language at a British University

The standard of language assessment is considered to be similar within the same country, but it actually varies from institution to institution even within the UK. Rubrics are important for language teachers to access students' written work, and it also relates to teachers' objective or subjective marking. This paper looks at Japanese assessment criteria in a British STEM university where students study Japanese in the IWLP context. Using two dimensions from Hofstede et al.'s (2010) cultural taxonomy and Hall's (1976) concept of high- and low-context culture, Japanese language rubrics for the written assessment was analysed in 2017. The findings show that the rubrics examined in this study were under the influence of Hofstede et al.'s (2010) collectivist and strong uncertainty avoidance educational culture. The emphasis on the correct use of grammar was observed and also found that language teachers in this institution grade students' written work more objectively using quantitative method. The rubrics includes instructions which enhance the quality of grading consistent and standardise among all language teachers. This process also helps to justify the first marker's awarded marks to the second marker and also the external examiner. Recommendations are given to language teachers and managers who coordinate languages. Language teachers are recommended to inform students whether the focus is accuracy or creativity as this information affects students in working on their assessed work. It is also recommended for managers at language centres to revise periodically the definition of categories to examine if there are any duplication among the rubrics and update them. Incorporating some aspects of rubrics mentioned in this study may enhance the quality of language teachers' grading to be standardised and consistent

An investigation of students’ preferences in Japanese teaching and learning

The teachers in the individualist country usually teach students using individualist approach while teachers in the collectivist countries teach students using collectivist approach. However, teachers and students do not usually share the same educational culture in language classrooms. The purpose of this study has two: first, to examine individualist and collectivist characteristics; second, to ascertain the students’ teaching preference whether it is individualist or collectivist approach in a British university. Participants were 19 students who study Japanese language through institution wide language program at a British university in the South of England. The collected data consist of two: questionnaire and an informal interview, both of which were conducted at the end of spring term 2019. The data were analysed using mixed methods. The quantitative results showed that students preferred a mixture of both educational cultures. The ratio of individualist: collectivist: neutral position was 74:11:16 in spite of the fact that this study was conducted in an individualist education culture

Space-saving hoist for tank manholes

Working platform and collapsible basket facilitate entry of men with equipment into the overhead manhole of a deep tank. A winch and pulley rigging hold the basket which is suspended in the manhole. The basket is suspended at three points without the rig impinging on the area of the manhole

Airborne rescue system

The airborne rescue system includes a boom with telescoping members for extending a line and collar to a rescue victim. The boom extends beyond the tip of the helicopter rotor so that the victim may avoid the rotor downwash. The rescue line is played out and reeled in by winch. The line is temporarily retained under the boom. When the boom is extended, the rescue line passes through clips. When the victim dons the collar and the tension in the line reaches a predetermined level, the clips open and release the line from the boom. Then the rescue line can form a straight line between the victim and the winch, and the victim can be lifted to the helicopter. A translator is utilized to push out or pull in the telescoping members. The translator comprises a tape and a rope. Inside the telescoping members the tape is curled around the rope and the tape has a tube-like configuration. The tape and rope are provided from supply spools

A mechanized system for log skidding using a "Winch-mounted steel sled" in the peat swamp forest of Malaysia

The soft peat soil pose a major problem to the use of heavy machinery for log skidding in the Peat Forest of Sarawak. Hence, in the past, the "kuda-kuda" system, a manual approach, remained the practical solution. However, increasing labour recruitment difficulties led to the need for an alternative system to the "kuda-kuda" such as the use of the "Winch mounted steel sled". However, information on the "Winch mounted steel sled" is still lacking. A continuous time study was therefore, conducted on log skidding using the "Winch mounted steel sled" in Bintulu, Sarawak, Malaysia. The objectives of the study were to describe the work components and quantify the production rate. The study identified four basic work elements in the skidding cycle which are travel empty, choke/winch, travel loaded and landing. Travel empty and travel loaded were the two largest elements accounting for 82% or more of basic skidding cycle time. Choke/winch and landing elements accounted for 12.6% and 4.6% respectively. The basic skidding cycle time only contributed 70.7% of gross cycle time due to the occurrences of delays (29.3%). Skid distance was the only independent variable found to influence skidding travel times. The production rate of the sled was 10.58 m3 per hour which was higher than production rate of the "kuda-kuda". The study showed the "Winch-mounted steel sled" is a potential alternative to the "kuda-kuda" system for log skidding in the Peat Swamp forests of Sarawak