31results about How to "Good input cost" patented technology

The invention discloses a full-set dismantling and installing construction method of a bridge overpassing an existing line. Full-set dismantling and installing construction is conducted on a plurality of beam segments needing to be dismantled of a used beam to be dismantled from front to back. The full-set dismantling and installing construction method comprises the steps that firstly, a pavement layer of the bridge surface is milled; secondly, roof-propping is conducted on the beam segments; thirdly, preparatory work is conducted before hoisting; fourthly, hoisting and moving-out are conducted; fifthly, one beam segment is installed after replacement; sixthly, full-set dismantling and installing construction of the next beam segment is conducted, specifically, full-set dismantling and installing construction is conducted on the next beam segment needing to be dismantled of the used beam to be dismantled according to the first step to the fifth step of the method; and seventhly, the sixth step is repeated once or more than once till full-set dismantling and installing construction of all the beam segments needing to the dismantled in the used beam to be dismantled is completed. The method is simple in step, reasonable in design, easy and convenient to implement and good in using effect, full-set dismantling and installing construction of the bridge overpassing the existing line can be completed easily, conveniently and rapidly, the construction process is safe and reliable, the construction period is short, and the method is economical and practical.

The invention discloses a method for constructing an arch rib of an upwardly supported box-shaped arch bridge. The constructed upwardly supported arch bridge includes left and right symmetrically arranged arch ribs. When constructing the constructed upwardly supported arch bridge arch ribs, the steps include: 1. Construction of the lower support structure of the bridge; 2. Arch rib construction, the process is as follows: steel arch support construction, translation slideway and lifting device installation, steel arch assembly, arch support frame jacking, arch rib construction first, arch The lowering of the support frame, the installation of the traversing drive device, the lateral movement of the arch support frame, the lifting of the arch support frame, the construction of the post-construction arch ribs and the removal of the arch support frame. The invention is reasonable in design, simple in construction and good in use effect. A steel arch frame is used to construct two arch ribs one after the other, and an arch support and lateral movement device is used to support and laterally move the steel arch frame, which can be simple and convenient. , Quickly complete the construction process of the two arch ribs, and the construction process is safe and reliable, which can effectively improve the construction efficiency of the overhead arch bridge.

The invention discloses a method for low-temperature puffing drying of fruits and vegetables. A mixed gas of N2 and CO2 is adopted to puff the fruits and vegetables at a low temperature, and the volume fraction of CO2 in the mixed gas is 5-20%. The method overcomes the problem that alkaline components in the fruits and vegetables are damaged by single use of CO2, so that nutritional components in the fruits and vegetables can be kept to a largest extent, and the product has good rehydration performance, is crisp and delicious, has good tooth feeling, and can keep original colors of the fruits and vegetables; and N2 and CO2 play a synergistic effect in a process of penetrating cells of the fruits and vegetables, penetration is fast, the puffing pressure is small, the equipment investment cost is low, and the safety factor is high. The method is suitable for drying treatment on various fruits and vegetables.

The invention discloses a full-set dismantling and installing construction method of a bridge overpassing an existing line. Full-set dismantling and installing construction is conducted on a plurality of beam segments needing to be dismantled of a used beam to be dismantled from front to back. The full-set dismantling and installing construction method comprises the steps that firstly, a pavement layer of the bridge surface is milled; secondly, roof-propping is conducted on the beam segments; thirdly, preparatory work is conducted before hoisting; fourthly, hoisting and moving-out are conducted; fifthly, one beam segment is installed after replacement; sixthly, full-set dismantling and installing construction of the next beam segment is conducted, specifically, full-set dismantling and installing construction is conducted on the next beam segment needing to be dismantled of the used beam to be dismantled according to the first step to the fifth step of the method; and seventhly, the sixth step is repeated once or more than once till full-set dismantling and installing construction of all the beam segments needing to the dismantled in the used beam to be dismantled is completed. The method is simple in step, reasonable in design, easy and convenient to implement and good in using effect, full-set dismantling and installing construction of the bridge overpassing the existing line can be completed easily, conveniently and rapidly, the construction process is safe and reliable, the construction period is short, and the method is economical and practical.