Topic
Portal frame
About: Portal frame is a research topic. Over the lifetime, 1778 publications have been published within this topic receiving 7210 citations.
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Patent•
16 Dec 2015
TL;DR: In this article, a belt cleaning device consisting of a portal frame and a linear motor with the stretching end penetrating a beam of the portal frame is arranged on the beam, and a horizontal plate is arranged at the lower end of the linear motor.
Abstract: The invention discloses a belt cleaning device special for a conveyor. The belt cleaning device comprises a portal frame. A linear motor with the stretching end penetrating a beam of the portal frame is arranged on the beam of the portal frame. A horizontal plate is arranged at the lower end of the linear motor. Bristles are arranged at the lower end of the horizontal plate. Elastic rolling units are arranged on a pair of supporting legs of the portal frame. Each elastic rolling unit is composed of a pair of through holes in the portal frame, a rolling shaft inserted into the pair of through holes, bearings arranged at the joints of the rolling shaft and the through holes, grooves in the upper surfaces inside the through holes and a reset spring, wherein one end of the reset spring is arranged on the lower surface inside the corresponding groove, and the other end of the reset spring is fixedly connected with the corresponding bearing. A control panel is arranged on one supporting leg of the portal frame and electrically connected with the linear motor. The belt cleaning device has the beneficial effects of being simple in structure and high in practicability.
3 citations
Patent•
22 Mar 2017
TL;DR: In this article, a large-scale timber surface machining double column planing machine is presented, which belongs to timber working lathe field, including the frame, the track on the frame and the portal frame on the track.
Abstract: The utility model provides a large -scale timber surface machining double column planing machine, belongs to timber working lathe field, including the frame, be provided with the track on the frame, be provided with the portal frame on the track, be provided with timber clamping device in the middle of the frame, the portal frame is inside to be provided with along the processingequipment of horizontal tilt setting, the portal frame top is provided with processingequipment's numerical control hoisting device, the portal frame periphery is provided with portal frame horizontal migration's drive arrangement, the planer is equipped with controller and operation board, utilize this large -scale timber surface machining double column planing machine, can carry out the processing of horizontal plane to large -scale timber, can ensure the smoothness on timber surface, level, can guarantee the surface machining precision.
3 citations
01 Jan 1996
3 citations
TL;DR: In this article, a new arc-surfaced frictional damper (AFD) is proposed and its hysteretic behavior is experimentally studied and applied to container crane based on a seesaw mechanism.
Abstract: In this paper, a new arc-surfaced frictional damper (AFD) is proposed and its hysteretic behavior is experimentally studied. Then the device is applied to container crane based on a seesaw mechanism. The major advantage of the seesaw damping system is that the long tension cables can be utilized as bracing between the seesaw member and the portal legs to avoid compression and buckling of the cables. A simplified trilinear force-displacement model on the basis of experimental results is adopted to represent the hysteretic behavior of AFD. After that, seismic responses of container crane with and without dampers to four earthquakes are studied using nonlinear dynamic time-history analysis. Besides this system, a diagonal-brace-AFD system is studied for comparison. A method based on the displacement and energy dissipation ratio is proposed to find the optimum slip force for seesaw damping system. Performance of AFD control system is assessed though various parameters including displacement and maximum portal frame drift angle. Results prove a feasible application of AFD control system to absorb large amounts of seismic energy and significantly reduce the structural responses.
3 citations
Patent•
20 Apr 2016
TL;DR: In this paper, a utility model device adopts full-automatic row to starch production methods, practices thrift the manpower, and adopts the mode of novel pattern draw simultaneously, has solved the difficult problem of traditional equipment pattern draw.
Abstract: The utility model discloses a ceramic manufacture arranges thick liquid device, including fixed disk and portal frame, fixed surface is connected in fixed disk and the frame, fixed surface connects the lower bolster on the fixed disk, skin weld mountain type is buckled on the fixed disk of lower bolster outer loop, portal frame and frame fixed connection, the portal frame top is passed through the pneumatic cylinder and is connected with the cope match -plate pattern, the portal frame intermediate position passes through the support mounting toroidal nozzle, the toroidal nozzle is connected with the oil box that has discharge device through oil pipe, portal frame left side bottom installs position sensor additional, the cope match -plate pattern is from outer to interior in proper order for last mould main part, hot plate no. 1, capacitor plate no. 1 and the board no. 1 that absorbs water, going up mould main part, hot plate no. 1, capacitor plate no. 1 and the board no. 1 that absorbs water and boning through the adhesive, this utility model device adopts full -automatic row to starch production methods, practices thrift the manpower, and the device adopts the mode of novel pattern draw simultaneously, has solved the difficult problem of traditional equipment pattern draw.
3 citations