Portal frame

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

Rotary drilling type ground anchor implantation machine

Abstract: The utility model discloses a rotary drilling type ground anchor implantation machine, comprising a movable loading machine and a portal frame installed on the loading machine; the portal frame is provided with a feeding mechanism ands a driller; the feeding mechanism is connected to the driller; the portal frame is connected with a driving oil cylinder; the feeding mechanism is connected to the driving oil cylinder; the utility model also comprises a supporting leg and a pulling rod; the supporting leg is vertically provided on the loading machine and near the portal frame; two ends of the pulling rod are respectively hinged with the loading machine and the portal frame; the lower part of the portal frame is hinged to the loading machine. The utility model combines the movement and the operation as a special device to rotate the screw panel to a certain depth by hydraulic power; the screw panel forms the anchor force of the soil body. The utility model achieves the mechanic construction and significantly enhances the working efficiency of the lines construction.

Load test portal for mounting automatic auto load detection device

Abstract: The utility model relates to a mounting test device for automobile equipment, in particular to a load test portal for mounting automatic auto load detection device, which is characterized in that the test portal is provided with a main portal frame, a hydraulic cylinder is mounted in the middle of the beam of the main portal frame, the test portal is equipped with a hydraulic station and a control panel, a platen device is mounted on the piston head of the hydraulic cylinder; the utility model is specially designed for mounting automatic auto load detection device on truck for weight calibration so that the auto load can be display numerically; the load test portal has simple structure, convenient operation, accurate detection and is particularly applicable to the mounting and testing of automatic auto load detection device for loaded trucks.

Non-orthogonal three-degree-of-freedom mechanical movement mechanism

Abstract: The invention discloses a non-orthogonal three-degree-of-freedom mechanical movement mechanism. The non-orthogonal three-degree-of-freedom mechanical movement mechanism comprises two profiles which are arranged in parallel and two portal frames which are arranged in parallel. The portal frames are fixed to portal frame installation plates. Synchronous wheels are arranged at the two ends of the outer side wall of each profile respectively. A first synchronous belt is mounted on the synchronous wheels of each profile. The synchronous wheels are fixed to the outer side walls of the profiles through synchronous wheel installation frames. A first motor used for driving the corresponding synchronous wheels is arranged at one end of each profile. A synchronous wheel pretightening installation frame is connected to the corresponding synchronous wheel installation frame at the other end of each profile. The first motors are fixed to the profiles through installation frames. Synchronous belt clamping plates are fixed to the first synchronous belts. The side walls of the synchronous belt clamping plates are fixedly connected with the outer side walls of the portal frame installation plates. An execution platform is arranged between the portal frames. An installation hole is formed in the execution platform. According to the non-orthogonal three-degree-of-freedom mechanical movement mechanism, the weight of the portal frames can be kept low, the weights of movement components on gantries are quite low, and thus the high-speed movement capacity is obtained; meanwhile, long traveling distance in specific directions can be achieved.

Intelligence mouth of pipe welding set of robot

Abstract: The utility model relates to intelligence mouth of pipe welding set of robot, including outer track, be provided with the twin columns portal frame on the outer track, install the switch board on the twin columns portal frame, twin columns portal frame base is provided with longmen travel driving unit, the welding set of robot includes welding robot, welding robot hangs and installs in the lift support, the laser instrument is installed to welding robot's end, be connected through slide plate between lift support and the twin columns cross beam of the gantry, last horizontal drive device and the lift drive of being provided with of slide plate, be provided with rack and guide rail on crossbeam and the lift support, the utility model discloses not only can realize on different thickness, different radian work piece the different positions of welding, takeover not equidirectional, not equidimension, in addition owing to set up the laser instrument at the welding robot end, can guarantee consequently that welding position, welding trace's is entirely true.

Minimum-Weight Design of a Portal Frame

Abstract: Design of frames under assumption that unit weight of structural member is proportional to α- th power of its fully plastic moment, positive exponent α being smaller than unity; for α = 2/3, chart is developed that gives minimum weight design for various geometries and loading conditions of portal frame.