提(ti)梁機(ji)(ji)(ji)是一種為(wei)橋(qiao)梁建設(she)而(er)專(zhuan)門設(she)計的(de)一種門式起(qi)(qi)(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)。提(ti)梁機(ji)(ji)(ji)既(ji)可兩臺(tai)(tai)(tai)配合抬(tai)吊預(yu)制梁，也可以(yi)單(dan)臺(tai)(tai)(tai)起(qi)(qi)(qi)重(zhong)(zhong)(zhong)機(ji)(ji)(ji)配雙吊具(ju)起(qi)(qi)(qi)吊預(yu)制梁，兩臺(tai)(tai)(tai)同時起(qi)(qi)(qi)重(zhong)(zhong)(zhong)的(de)提(ti)梁機(ji)(ji)(ji)各(ge)自的(de)起(qi)(qi)(qi)重(zhong)(zhong)(zhong)量一般為(wei)450噸，單(dan)臺(tai)(tai)(tai)起(qi)(qi)(qi)重(zhong)(zhong)(zhong)的(de)提(ti)梁機(ji)(ji)(ji)起(qi)(qi)(qi)重(zhong)(zhong)(zhong)量通常可達(da)900噸。它(ta)配置支腿行(xing)走、天車行(xing)走及天車起(qi)(qi)(qi)吊設(she)備，可以(yi)實(shi)現全方位(wei)(wei)機(ji)(ji)(ji)械化動作。主要用于(yu)(yu)將預(yu)制梁從(cong)制梁臺(tai)(tai)(tai)提(ti)吊至(zhi)存梁臺(tai)(tai)(tai)位(wei)(wei)，預(yu)制梁養(yang)護完成后將其從(cong)存梁臺(tai)(tai)(tai)位(wei)(wei)吊運到運梁車上。作為(wei)起(qi)(qi)(qi)重(zhong)(zhong)(zhong)設(she)備完成架橋(qiao)機(ji)(ji)(ji)的(de)組裝和(he)拆(chai)卸。還用于(yu)(yu)架設(she)墩身不高的(de)旱(han)橋(qiao)。