Portal frame

About: Portal frame is a research topic. Over the lifetime, 1778 publications have been published within this topic receiving 7210 citations.

Shear Resistance of portal Frame Reinforced with Bamboo and Steel Rebar: Experimental and Numerical Evaluation

Abstract: The main objective of this study is to evaluate the shear resistance of portal frame fabricated with bamboo and steel rebar by following experimental and numerical approaches. In support of sustainable construction, bamboo stripes were utilized as a partial replacement of steel rebar at tension zone of members that are subjected to lateral loading. The performance of nominal portal frame, which are fabricated with steel reinforcement was compared to the portal frames having several replacements of steel reinforcement with bamboo, in terms of seismic resistance and lateral load capacity. The experimental data was correlated based on software analysis using ABAQUS. The partial replacement of steel with bamboo under tension zone of the beams in portal frame was found to be highly effective, and also that the flexural rigidity of the partial bamboo reinforced frame was slightly higher than the nominal portal frame. This study provides insight on the possibility of reinforcing structural members with bamboo, when lateral loading is imminent on the structure.

Vehicle gabarit size detection appearance

Abstract: The utility model discloses a vehicle gabarit size detection appearance, the utility model relates to measure technical field, indicate the used vehicle gabarit size detection equipment of department such as a policeman vehicle administrative institute, vehicle test station especially. Including portal frame, laser scanner group, photoelectric sensor, electrical apparatus case, dot -matrix display screen and system computer. The portal frame includes preceding portal frame and back portal frame. Laser scanner group comprises left scanner, right scanner and preceding scanner. Wherein left and right scanner is installed in the crossbeam both ends of preceding portal frame, the scanning plane coincidence to it is perpendicular with the vehicle travel direction, preceding scanner is installed in the crossbeam middle section of back portal frame, and scanning plane is parallel with the vehicle travel direction. The utility model discloses realizing measuring process automation and going on, the measuring speed is fast, it is few influenced by external light, the good reliability, and structural design is succinct, simple to operate.

Plank cutting all -in -one that punches

Abstract: The utility model discloses a plank cutting all -in -one that punches, including be equipped with the workstation the frame, locate positioning mechanism, drill bit, the cutterbar on the workstation and stride the portal frame of locating in the frame, on two portal frames are located to drill bit and cutterbar branch, still including the driving gantry frame along the Y axle running gear of the vertical walking of frame, along the X axle running gear of the horizontal walking of frame and locate X axle running gear and go up the Z axle running gear who walks perpendicularly. Compared with the prior art, the beneficial effects of the utility model are that: the location is accomplished promptly in proper order to pan feeding, measures the location when having eliminated manual operation and time of changing the work piece, and the location uses right side baffle and back side shield for the location benchmark, through the cylinder left side push plate of the drive location that side push plate accomplished the plank before and, the utility model discloses realize an equipment, accomplish two kinds of functions of drilling and cutting panel simultaneously to can carry out corresponding adjustment according to actual board material size.

Circumferential weld submerged-arc welding device for butt-joint of steel pipes

Abstract: The utility model discloses a circumferential weld submerged-arc welding device for butt-joint of steel pipes and belongs to the technical field of welding. The circumferential weld submerged-arc welding device comprises an outside welding device, an inside welding car, a lower cross-shaped rotating roller set, a fixed portal frame and a movable portal frame, wherein the fixed portal frame and the movable portal frame are respectively arranged on two sides of the outside welding device; a steel pipe importing device and a steel pipe transverse moving device are arranged on the left side of the movable portal frame; the inside welding car is arranged on the right side of the fixed portal frame; and the lower cross-shaped rotating roller set is arranged between the inside welding car and the fixed portal frame. By utilizing the circumferential weld submerged-arc welding device, an inside and outside submerged-arc welding manner is adopted, the welding work of a circumferential weld is carried out along the pipe ends of two sections of steel pipes needing butt-joint, the circumferential weld meets standard requirements, the steel pipes which do not meet the requirements of the standard length can be processed into a butt-joint steel pipe meeting the standard requirements, and the production cost of a use unit can be greatly reduced.