Portal frame

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

Electric pole hoisting and transportation device

Abstract: The utility model discloses an electric pole hoisting and transportation device, which comprises a four-wheeled tractor, wherein the four-wheeled tractor is provided with a hydraulic driving system, a portal frame and a fixed frame are arranged at the upper part of the rear side of the four-wheeled tractor, the fixed frame is lower than the portal frame and positioned behind the portal frame, a cross beam of the portal frame is connected with a sleeve in a rotating manner, the sleeve is perpendicularly connected with a suspender extending backward, a hydraulic cylinder inclining towards the rear upper side is fixed on the fixed frame, the upper end of a piston rod of the hydraulic cylinder is connected with channel steel through a hinge, the top of the channel steel is opened, the front middle part of the suspender is connected in a groove of the channel steel in a sliding manner, and a hoisting hook is arranged at the lower part of the rear end of the suspender. The electric pole hoisting and transportation device can be obtained by improving an existing four-wheeled tractor, the hoisting speed and efficiency of electric poles can be effectively improved, the labor-saving, effort-saving and cost-saving transportation of the electric poles can be guaranteed, the electric pole transportation time can be shortened, the electric poles are quickly and safely transported to a construction place in a narrow road, and guarantee can be provided for speeding up the transformation progress of a power grid.

Multifunctional portal frame type mechanical arm

Abstract: The utility model relates to a multifunctional portal frame type mechanical arm which comprises a portal frame and is characterized in that a track is arranged on the portal frame, wherein a trolley system is arranged on the track; guide bars are fixedly arranged on the trolley system; a lifting hydraulic cylinder is also arranged on the trolley system; a piston end of the lifting hydraulic cylinder is connected with a supporting plate which is sheathed on the guide bars; clamping arms are arranged at two ends of the supporting plate; the clamping arms and the supporting plate are movably connected; the two clamping arms are connected by a parallel four-bar mechanism; and a clamping hydraulic cylinder is arranged between the lower side of the supporting plate and the parallel four-bar mechanism. The multifunctional portal frame type mechanical arm has the advantages of realizing the automatic carrying and overturning of objects (particularly objects with higher temperature and larger mass), reducing the area occupied by carrying and overturning the objects, and is suitable for being used on production lines of casting, forging and the like.

Individual liftout attachment for low-pressure casting

Abstract: The utility model provides a separate tip-out device for low-pressure casting, including dynamic templates, which is connected with portal frame, a tip-out fuel tank is installed on the portal frame whose piston rod within is connected with the tip-out plate, and a tip-out rod is installed on the tip-out plate The utility model applies the portal frame on the dynamic templates of the low-pressure casting equipment, shortens the trip of the processing workpiece and the tip-out workpiece, and the seal components on the hydraulic cylinder are prevented from heat damage, thus can avoid leakage

Portal frame type five-freedom-degree abrasive water jet spatial machining mechanical arm

Abstract: The invention relates to a portal frame type five-freedom-degree abrasive water jet spatial machining mechanical arm On the basis of a portal frame, a mechanical arm and an abrasive water jet machining technology are combined, and the flexibility and efficiency of water jet machining are improved The portal frame type five-freedom-degree abrasive water jet spatial machining mechanical arm comprises a portal frame work bench, an abrasive water jet spray nozzle, a wrist, a forearm, a big arm, a machine seat, a sliding block, a portal frame cross beam and portal frame stand columns The portal frame type five-freedom-degree abrasive water jet space machining mechanical arm has the advantages that the structure is ingenious, the mechanical arm and the water jet technology are combined, machining of a plane, a curved face and an inner surface and an outer surface of a workpiece is achieved through water jet, the flexibility of abrasive water jet machining is improved, the application range is wider, and the portal frame type five-freedom-degree abrasive water jet spatial machining mechanical arm is characterized by being efficient, reliable, flexible in operation and the like

Safety display method for building construction

Abstract: The invention relates to a safety device in the field of building construction, in particular to a safety display device for building construction, which is characterized in that: a monitor is arranged on a movable pallet of a portal frame, a cathode-ray tube display is configured on a bracket in front of an operating platform of hoisting workers, and a video cable is led out from the display and connected with the monitor; the portal frame is closed by a cable conductor and the sleeve of the video cable; and the monitor is used as the eyes of the pallet of the portal frame, the display is arranged in front of the hoisting operating platform to serve as a brain, and things observed through the eyes are imaged on the brain. The safety display method for building construction solves the problems of low working efficiency, high labor intensity and low safety factor of the pallet of the portal frame during high-rise building construction, and eliminates potential safety hazards which can happen at any time during on-site construction.