| During road maintenance,upgrading and expansion,the construction area shall be equipped with enclosure warning devices to alert and protect pedestrians and drivers,and protect the production site.Common enclosure warning devices can be in the form of road cones,The road cone can be automatically deployed through the equipment,but the barrier of the road cone is poor,and personnel can enter and leave the construction site at will;Water horses,iron horses,and color steel fences can also be used,but the installation of such facilities is time-consuming and labor-intensive,and is not easy to recycle.The thesis combined with the technical needs of the subject cooperative enterprises,proposed a new type of removable fence,and carried out the design and key technology research of the removable fence automatic pick and place machine.The main research contents of the paper are as follows:1.In-depth analysis of the advantages and disadvantages of the existing enclosure warning device and automatic deployment mechanism,combined with modern road and bridge maintenance specifications,proposed a new type of detachable fence.The new type of fence is mainly composed of fence cloth,fence pole,fence seat and assembly mechanism,etc.It can be quickly assembled and disassembled.In addition,it is suitable for rapid urban construction and other occasions.2.Combined with the analysis of the disassembly and assembly process of the detachable fence,the overall design of a new type of automatic pick and place machine for the fence was developed.The new fence pickup and placement machine is mainly composed of fence lifting parts,fence pole disassembly and transfer parts,fence seat destacking parts,fence pole storage parts,fence seat storage parts,etc.It can be quickly installed on the construction vehicle to realize the rapid deployment and recycling of the removable fence at the construction site.3.Based on the wind field fluid analysis theory,the wind field stress model of the removable fence,the overturning mechanical model and the sliding mechanical model of the fence are established;Using the fluid mechanics analysis software CFX,the structure size and the structure of the detachable fence are optimized.4.The graphic design method and mechanism analysis theory are used to complete the optimization design of typical mechanisms such as the decoded parts of the fence seat,the lifting mechanism of the fence seat layer,and the positioning mechanism of the fence seat layer.Combining the modeling function of Solidworks and the finite element analysis function of Ansys Workbench,the optimization and lightweight design of the fencing disassembly and assembly transfer robot are realized. |
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