Pneumaatilise tõstemehhanismiga elektrijalgratta hoolduspuki projekt
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Kuupäev
2026
Kättesaadavus
09.09.2026
Autorid
Ajakirja pealkiri
Ajakirja ISSN
Köite pealkiri
Kirjastaja
Eesti Maaülikool
Abstrakt
Elektrijalgrataste populaarsuse kasv on suurendanud jalgrattatöökodades nõudlust tõstemehhanismiga hoolduspukkide järele, mis aitavad vähendada raskete, ebamugava kujuga ja ebaühtlase massijaotusega elektrijalgrataste käsitsi teisaldamisel tekkivat terviseriski. Olemasolevad tõstemehhanismiga hoolduspukid põhinevad peamiselt elektrilistel ajamitel, mistõttu seati käesoleva töö eesmärgiks pneumaatilise alternatiivi väljatöötamine.
Lõputöö eesmärk on projekteerida ja valmistada pneumaatilise tõstemehhanismiga elektrijalgratta hoolduspukk, mis vähendab elektrijalgrataste käsitsi teisaldamisest tulenevaid terviseriske.
Töö käigus analüüsiti turul olevaid tõstemehhanismiga hoolduspukke, määrati projekteeritavale pukile tehnilised nõuded ning teostati jõuarvutused pneumosilindri valikuks. Pneumaatilise tõstemehhanismi töökorrektsust kontrolliti katseliselt. Detailide valmistamiseks kasutati laselõikuse, CNC-freesimise, lehtmetallipainutuse ja 3D-printimise tehnoloogiaid.
Töö tulemusena valmis pneumaatilise tõstemehhanismiga elektrijalgratta hoolduspukk, mille garanteeritud tõstevõime 6 bar töörõhul on kuni 40 kg. Katsetamisel tõstis pukk elektrijalgratast sujuvalt kogu käigupikkuse ulatuses ning püsis koormatud olekus stabiilsena. Võrreldes turul olevate elektriliste lahendustega kasutab projekteeritud pukk energiaallikana suruõhku, mis on jalgrattatöökodades tavapäraselt kättesaadav. Valminud lahendus ei ole käsitletav lõpliku tootena, kuid see kinnitas pneumaatilise tõstemehhanismi sobivust elektrijalgratta hoolduspuki rakenduses. Edasiste arendustena on võimalik lisada tööriistahoidik, suruõhu väljund, pneumaatikakomponentide kaitsekate, positsioonimälu funktsioon ning täiustada juhikute süsteemi.
The growing popularity of electric bicycles has increased the demand in bicycle workshops for maintenance stands with lifting mechanisms, which help reduce health risks associated with manually handling heavy, awkwardly shaped e-bikes with uneven weight distribution. Existing maintenance stands with lifting mechanism are mainly based on electric drives, which led to the objective to develop a pneumatic alternative. The aim of this thesis is to design and manufacture a bicycle maintenance stand with a pneumatic lifting mechanism that reduces health risks caused by manual handling. During the work, existing lifting maintenance stands on the market were analyzed, technical requirements for the designed stand were defined, and force calculations were performed for selecting a pneumatic cylinder. The proper operation of the pneumatic lifting mechanism was experimentally verified. Manufacturing methods included laser cutting, CNC milling, sheet metal bending, and 3D printing. As a result of the work, a pneumatic lifting maintenance stand for electric bicycles was developed, with a guaranteed lifting capacity of up to 40 kg at a working pressure of 6 bar. During testing, the stand lifted an electric bicycle smoothly throughout the entire stroke length and remained stable under load. Compared to existing electric solutions on the market, the designed stand uses compressed air as its energy source, which is commonly available in bicycle workshops. The developed solution is not considered a final product; however, it confirmed the suitability of a pneumatic lifting mechanism for use in an bicycle maintenance stand. Future developments may include adding a tool holder, a compressed air outlet, protective covers for pneumatic components, a position memory function, and improvements to the guide system.
The growing popularity of electric bicycles has increased the demand in bicycle workshops for maintenance stands with lifting mechanisms, which help reduce health risks associated with manually handling heavy, awkwardly shaped e-bikes with uneven weight distribution. Existing maintenance stands with lifting mechanism are mainly based on electric drives, which led to the objective to develop a pneumatic alternative. The aim of this thesis is to design and manufacture a bicycle maintenance stand with a pneumatic lifting mechanism that reduces health risks caused by manual handling. During the work, existing lifting maintenance stands on the market were analyzed, technical requirements for the designed stand were defined, and force calculations were performed for selecting a pneumatic cylinder. The proper operation of the pneumatic lifting mechanism was experimentally verified. Manufacturing methods included laser cutting, CNC milling, sheet metal bending, and 3D printing. As a result of the work, a pneumatic lifting maintenance stand for electric bicycles was developed, with a guaranteed lifting capacity of up to 40 kg at a working pressure of 6 bar. During testing, the stand lifted an electric bicycle smoothly throughout the entire stroke length and remained stable under load. Compared to existing electric solutions on the market, the designed stand uses compressed air as its energy source, which is commonly available in bicycle workshops. The developed solution is not considered a final product; however, it confirmed the suitability of a pneumatic lifting mechanism for use in an bicycle maintenance stand. Future developments may include adding a tool holder, a compressed air outlet, protective covers for pneumatic components, a position memory function, and improvements to the guide system.
Kirjeldus
Rakenduskõrgharidusõppe lõputöö
Tehnotroonika õppekaval
Märksõnad
lõputööd, tõstemehhanism, pneumaatika, elektrijalgratas, hoolduspukk