Uudse konstruktsiooniga ekskavaatorikopa projekteerimine OÜ Vergine näitel

Lõputöö koostati Vergine OÜ baasil, mille eesmärgiks oli projekteerida uudse konstruktsiooniga ekskavaatori kaevekopp. Projekti koostades sai ülevaate turul pakutavatest kaevekoppadest. Analüüsides turgu sai selgeks, et projekteeritav kaevekopp peab olema massilt kergem, samas vastupidav ja hinnalt soodsam või samaväärne, et pakkuda turul konkurentsi. Geomeetriline liides ja tehnoloogilised avad lihtsutavad kaevekopa koostamist ja keevitamist, mis omakorda vähendab tootmiskulusid. Lõputöö raames sai rakendatud terale maksimaalne kaevejõud 89 kN. Algselt lihtsamateks kaevetöödeks projekteeritud kaevekoppa analüüsidest selgus, et kaevekopp on võimeline tööd tegema ka raskemates tingimustes. See aga poleks majanduslikult otstarbekas, sest puuduvad suure kulumiskindlusega eriterasest külgmised kulumisplaadid ja esitera. Majanduslikus osas võeti kokku tootmise hind, materjali maksumus ja kulu pinnakattele. Selle kõige tulemusena saadi toote omahind, lisades juurde tootmisvälised kulud ja kasumi marginali, saadi toote realiseerimishind. Vaadates turu-uuringu tulemusi, siis projekteeritud kaevekopp on turul majanduslikult konkurentsivõimeline. Katseeksemplar, mis toodeti kasutades lõputöös esitletud geomeetrilist lahendust, täitis oma eesmärki. Peale 5000 töötunni töötamist, pidas konstruktsioon koormustele ja kulumistele vastu. Lõputöö eesmärk sai täidetud, uudse konstruktsiooniga kaevekopp on massilt kergem, kui turu-uuringus välja toodud konkurentide kaevekopad. Samuti suudab hinnaga konkurentsi pakkuda. Katseeksemplari uudne konstruktsioon tõestas reaalsetes oludes oma vastupidavust, seda kinnitas ka klient oma positiivses tagasisides (Lisa 5).

The aim of this thesis was to project excavator clamshell with modern construction. The thesis was made on the basis of Vergine OÜ. While doing the project the author got an overview of the offered excavator clamshells for the excavators on the market. After analysing the offers on the market it was discovered that for the excavator clamshell to compete on the market it should be lighter in mass, yet hard-wearing as well as favourable or at least in the same price class as the others. Geometrical joint and technological apertures simplify the assembly and the welding of the clamshell, which in turn reduces operating costs. In the calculation for this thesis on the blade was applied the maximal excavation strength of 89 kN. After analysing the excavator clamshell that was firstly designed for the easy excavation works, it was clarified that the clamshell is qualified to be used in more difficult conditions. Still that would not be financially viable as there are no lateral wear plates and blade made of wear resistant steel. In financial part of the thesis was summarized the cost of material, cost of surfacing and the production cost. As a result of that, it was possible to calculate the net value, adding non-production costs and profit marginal, the selling price was determined. Looking at the market research, it can be seen that the designed excavator clamshell can compete on the market. Test exemplar that was manufactured with the geometrical solution presented in the thesis, accomplished its goal. The construction withstood the loads and eroding even after being used for 5000 hours. The goal of the thesis was achieved, the excavator clamshell with the modern construction is lighter in mass than the excavator clamshells pointed out in market research. In addition, it can offer competition on the market in the price aspect. Test exemplar’s modern construction proved its durability in real conditions, it was also confirmed by the client positive feedback. (Lisa 5)