Portal frame

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

Portal vertical machining center

Abstract: The invention discloses a portal vertical machining center which comprises a lathe body, wherein a portal frame and a base are arranged on the lathe body; the portal frame spans the base; first guide rails in the horizontal direction, which are perpendicular to a plane where the portal frame is located, are arranged on the base; a working platform capable of making X-axis movement along the first guide rails is mounted on the first guide rails; second guide rails in the horizontal direction are arranged on a cross beam of the portal frame; a saddle capable of making Y-axis movement along the second guide rails is mounted on the second guide rails; third guide rails in the vertical direction, which are perpendicular to a plane where the working platform is located, are arranged on the saddle; and a spindle box capable of making Z-axis movement along the third guide rails is mounted on the third guide rails. The portal vertical machining center is good in rigidity and stability, and high in machining precision, and has very good market popularization prospects.

Narrow and small deviated well bore space pipe conveying and hoisting device

Abstract: The utility model discloses a narrow and small deviated well bore space pipe conveying and hoisting device which comprises a convening trolley and a hoisting support. The narrow and small deviated well bore space pipe conveying and hoisting device is characterized in that a frame of the convening trolley is a rectangular frame (2), front and back idler wheels (1) are installed on the lower portion of the rectangular frame (2), the size of the rectangular frame (2) and the sizes of the idler wheels (1) are matched with the size of a tank trolley track in a roadway, and a pipe bracket (3) with a hoop (4) is fixed on the rectangular frame (2). The hoisting support is an assembly-type portal frame, the width and the height of the assembly-type portal frame are matched with the width and the height of the roadway respectively, and a hoisting ring (6) for hanging a chain block is welded on an upper transverse beam (5) of the portal frame.

Tack welding fixture for bridge girder structure

Abstract: PROBLEM TO BE SOLVED: To reduce transport time and wasted idle time between processes and enable efficient weld assembly in weld assembly operations of bridge girder structure. SOLUTION: The tack welding fixture for bridge girder structure includes: a long, narrow transport path 1 through which a bridge girder structure and materials therefor are transported in a longitudinal direction from a materials receiving area A to supplemental tack welding area B; a portal frame 4 which horizontally straddles the transport path 1 between the materials receiving area A and supplemental tack welding area B; a back stopper device 2 which makes it possible to support and raise/lower materials received in a vertical state in the material receiving area A; a push-up device which is disposed below the transport path 1 at the location of the portal fame 4 and moves in the horizontal direction, extending and retracting into the transport path 1; a pair or multiple pairs of horizontal pressing devices which are disposed in both the side columns 4b of the portal frame 4 and extend toward the inside of the frame; and a pressing device which moves horizontally along the beam 4a of the portal frame 4 and extends downward. COPYRIGHT: (C)2011,JPO&INPIT

Test bed for steel product

Abstract: The utility model discloses a test bed for a steel product. The test bed for the steel product comprises a multi-channel coordinating loading system, a mechanical system and a foundation, wherein the multi-channel coordinating loading system comprises a power pump station and oil source, a control system, electro-hydraulic servo actuators and a hydraulic pipeline, the mechanical system comprises portal vertical posts, a longitudinal beam, hydraulic servo actuator mounting bases and a portal frame, the foundation comprises cast iron platforms, the portal frame comprises portal frame vertical posts and a portal frame crossbeam, and the portal frame vertical posts are connected with the cast iron platform II; the portal vertical posts are connected with the cast iron platform I, the hydraulic servo actuator mounting bases are connected with cast iron platform I, a transverse beam is arranged on each portal vertical post, hydraulic servo actuator lifting seats are arranged on the transverse beams, the longitudinal beam and the crossbeam of the portal frame, and the electro-hydraulic servo actuators are connected with the hydraulic servo actuator lifting seats respectively, and are connected with the hydraulic servo actuator mounting bases; and sensors are arranged on each electro-hydraulic servo actuator. The vertical, transverse and longitudinal displacements, the static force and the loading of fatigue loads are simultaneously realized.