34results about How to "No longitudinal displacement" patented technology

The invention discloses an elevator capable of preventing a car from accidentally moving. The elevator comprises a car guide rail, a car frame, a car assembly, an elevator locking device and a traction host machine; the car frame includes an upper cross beam, a lower cross beam and a stand column; the car assembly includes a car, a car door, and a door opening machine mounted on the stand column or the upper cross beam; the elevator locking device includes an elevator locking plate fixedly connected to the car guide rail and provided with a transverse elevator locking hole, an elevator locking rod base fixedly connected to the two end parts of the upper cross beam and provided with a transverse through hole, an elevator locking rod inserted in the through hole and capable of being inserted in the elevator locking hole, and a drive arranged at the tail end of the elevator locking rod and driving the elevator locking rod to extend and contract front and back; and an anti-slip buckle is arranged at the front end of the elevator locking rod. The elevator locking rod is arranged to penetrate through the through hole of the elevator locking rod base and to be inserted in the reserved elevator locking hole of the elevator locking plate; an anti-falling structure is added to promote the fixed-point stop and door opening safety of the elevator; and the anti-slip buckle penetrates through the elevator locking hole to prevent the elevator locking rod from slipping, so that longitudinal displacement in opening of the car door is prevented and absolute brake is achieved.

The invention discloses a construction method of a corrugated steel pipe culvert, in which a plurality of said pipe culvert splicing sections are respectively spliced ​​and constructed from back to front, comprising the steps of: A1, splicing construction of the rear end splicing section; A2, splicing of the next splicing section Construction; A3. Repeat step A2 several times until the splicing construction process of all pipe and culvert splicing sections on the rear side of the front-end connection section is completed; A4. Splicing construction of the front-end connection section. The present invention is reasonable in design, simple in construction, and good in use effect. The spliced ​​corrugated steel culvert is reinforced segmentally by using a prestressed reinforcement structure, and the structure and arrangement position of each prestressed tendon group in the prestressed reinforcement structure are limited. In the splicing process of pipe culvert splicing sections, prestressed reinforcement is carried out synchronously and segmentally, and all pipe culvert splicing sections in the pipe culvert body are integrally reinforced by prestressed reinforcement structure, which can effectively improve the integrity and mechanical performance of the constructed pipe gallery , and can effectively extend the durability of the pipe gallery.

The invention discloses a splicing construction method of a corrugated steel pipe gallery, in which a plurality of splicing sections of the pipe gallery are respectively spliced ​​and constructed from back to front, comprising steps: A1, splicing construction of the splicing section at the rear end; A2, next splicing section Splicing construction; A3. Repeat step A2 several times until the splicing construction process of all pipe gallery splicing sections on the rear side of the front connecting section is completed; A4. Splicing construction of the front connecting section. The present invention is reasonable in design, simple in construction, and good in use effect. It uses a prestressed reinforcement structure to carry out segmental overall reinforcement of the spliced ​​corrugated steel pipe gallery, and limits the structure and layout position of each prestressed tendon group in the prestressed reinforcement structure. , during the splicing process of the pipe gallery splicing section, the prestressed reinforcement is carried out synchronously and segmentally, and all the pipe gallery splicing sections in the pipe gallery body are integrally reinforced by the prestressed reinforcement structure, which can effectively improve the integrity and mechanical performance of the constructed pipe gallery , and can effectively prolong the durability of the pipe gallery.