Mhinduro yakadzama yekuziva mhando yekutanga yehimari ina-bar michina nekushandisa hinged f

Kuwedzera pane kuongororwa kwehukama pakati penyaya yekufamba kwehukama uye chinzvimbo chevhu zvinobatanidza munzvimbo ina-bar kinematic, tinogona kuongorora mamiriro ezvinhu akasiyana siyana kuti aiswe zvisingabvumirwe. Nekufunga nezve saizi yehukama uye chinzvimbo chetsvimbo imwe neimwe, isu tinokwanisa kuona mhinduro dzemhando dzakasiyana-siyana dzekutanga dzeMuchina mukati meiyo inofungidzirwa chimiro.

Hukuru hwehukama hukama hunogona kukamurwa kuita nyaya nhatu. Mune yekutanga nyaya, kana "ad < bc" and a and b are adjacent bars, we can take the shortest bar (a) as the reference member and analyze its relative motion with the two adjacent bars. Since "a < b" and "c < d", we can conclude that rod a can be straightened and collinear with the two adjacent rods. In other words, a can overlap and be aligned with the neighboring rods.

Kuti ugadzire iyi yakawandisa mamiriro, inotevera kusaenzana inofanira kubata: "D + C> B + A". Izvi zvinoreva kuti "d> C + A", inoenderana nemamiriro ezvinhu akapihwa. Pamusoro pezvo, inogona kuve yakaratidza kuti inogona zvakare kuyambirwa uye collinear ine yakatarisana nedambudziko rakatarisana (c), kushandisa kufunga kwakafanana. Nekudaro, iyo poter (b kana c) yeiyo pfupi pfupi bar (a) inogona kungopinza hama mbiri dzakapetwa pamatanda ari pasi pe180 °. Izvi zvinoreva kuti kona yekutsvaira inogumira kune isingasviki 180 °, asi yakakura kupfuura 50 ° (sekutarisa mamiriro).

Mune yechipiri kesi, apo A uye B vari pakatarisana nematanda, iyo nzira imwecheteyo sezvo kesi yekutanga inogona kuiswa kuratidza kuti ipfupi bar (a) ichiri kutenderedza hama mbiri dziri mbiri. Naizvozvo, tinogona kusiya hurukuro yeichi chiitiko.

Mune ketiti yechitatu, isu tinofunga nezve hama yekunakidzwa pakati pebhari refu (d) uye vaviri vaviri vega. Kubva pamamiriro ezvinhu anozivikanwa, tinogona kubvisa izvo "D> B + BI + AC" uye "D> E + AB". Izvi zvinoreva kuti tsvimbo d haigone kutaurwa uye collinear ine matombo maviri aipota. Pamusoro pezvo, kana D ANOGONA kuwanda uye collinear nedziva ravakidzani, tingave "d + c> B + a" d + (bi + cont mamiriro akapiwa). Naizvozvo, isu tinogumisa kuti tsvimbo d haigoni kufukidza uye kuve collinear nedziva ravakidzani. Mune ino mamiriro, makona ese ekutsvaira anogumira kune asingasviki 180 °.

Kusanganisa mhedziso kubva kune yekutanga, yechipiri, uye yechitatu uye yechitatu, tinogona kupfupisa izvo, pasi pemamiriro e "ad < bc", regardless of the various positions, the shortest bar (a) and the second adjacent bar (b) can rotate relative to each other for a whole circle. However, the opposite pole (b or c) and the two adjacent poles of the shortest bar can only swing relative to each other, with the relative swing angle being less than 180°.

Nekujekesa kufambiswa kwehama pakati pematanda maviri emarara mune ino yerudzi-bar kinematic keteni, tinogona kuona nyore mhando yemuchina nekusarudza chero tsvimbo seyakagwinya. Semuenzaniso, kana tsvimbo ipfupi (a) ine divi ripi rinoshandiswa seyakagadzika, crank-rocker michina inowanikwa. Ukuwo, kana divi rakatarisana retsvimbo rakatsvuka rinoshandiswa sechipfuramo, iyo mbiri-rocker michina inowanikwa. Izvo zvakakosha kuti uzive kuti rocker, mune yekupedzisira nyaya, haigoni kutsvaira kune chinzvimbo chekodhi neyakajaira kana mutsara wekuwedzera wekutora, uye tsime rekutsvedza rinofanira kunge risingasviki 180 °.

Mukupedzisa, kubudikidza nekuongororwa kwehukama pakati penyaya yekufambisa, saizi yematanda anobatanidza mune hinged ina-bar kinematic take, tinogona kuona mhando yeiyo michina uye isingakwanisi. Nokunzwisisa idzi nheyo, mainjiniya uye magadziri anogona kukudziridza uye optimize akasiyana marudzi emuchina ezvinyorwa zvakati.