Magnetbroms i liftvinsch
2019 (Swedish)Independent thesis Basic level (professional degree), 10 credits / 15 HE credits
Student thesisAlternative title
Magnet brake in lift winch (English)
Abstract [sv]
Skidanläggningar har problem med att deras liftvinschar behöver regelbunden service av bromsarna, det vill säga bromsarna på de individuella byglarna. Det gör att de måste stänga ner sin anläggning och ta in servicepersonal vilket kostar resurser. Nuvarande bromsar kräver service i form av byte av slitagedelar. Genom att byta ut nuvarande bromssystem mot magnetbromsar skulle behovet av service minska.
Magnetbromsen måste utformas så att den har olika bromsverkan när liftlinan dras ut, jämfört när den dras in, och dessutom kunna monteras in i befintligt liftvinschskal, vilket är ett produktutvecklingsuppdrag. Flera idéer togs fram genom en idégenererigsprocess och en urvalsprocess genomfördes för att ta fram ett slutkoncept som avhjälper behovet av så tät service. Ett flertal tester utfördes och principberäkningar gjordes på delar av konstruktionen. Slutkonceptet resulterade i en magnetbroms som kräver minimalt med service och som även löste problemet med olika bromsverkan beroende på om liftlinan dras in eller ut.
Vidare arbete är bland annat att ta fram en process för att anpassa nuvarande liftvinchar för montering av magnetbromsen och därtill detaljutvecklingen av magnetbromsens olika delar.
Abstract [en]
Ski resorts have a problem that their lift winches need regular service of the brakes, ie. the brakes on the individual T-bars. This means that ski lift operators have to shut down their facilities and bring in service personnel, which costs resources. By replacing the current brake system with magnetic brakes, the need for service would decrease.
The new magnetic brakes must be designed to have different braking action when extending the lift winch line, compared to when it is retracted, and must also be able to fit into the existing lift winch housing. The problem herein solved, was defined as a product development assignment.
Several ideas were generated by an idea generating process and a selection process was conducted to develop a final concept that meets all design criteria and significantly extends the service intervals.
The design process carried out included that a number of tests were carried out and principle calculations were made on parts of the structure. The final concept is a magnetic brake that requires minimal service and also solves the problem of different braking performance depending on whether the lift line is extended or retracted. Further work includes developing a process for adapting the current lift winches too accept mounting the magnetic brake. Further work also include additional detailed development of the magnetic brake components.
Place, publisher, year, edition, pages
2019. , p. 61
Keywords [en]
words: lift, winch, magnet brake, braking
Keywords [sv]
lift, vinsch, magnetbroms, inbromsning, produktutveckling
National Category
Mechanical Engineering
Identifiers
URN: urn:nbn:se:oru:diva-77012OAI: oai:DiVA.org:oru-77012DiVA, id: diva2:1357794
Subject / course
Mechanical Engineering
Supervisors
Examiners
2019-10-042019-10-042019-10-04Bibliographically approved