Research On Detachable Connection Structure Of Floor Based On Geothermal Heating System

The connection of the floor is the key technology in the floor installation and the traditional floor connection is fixed by way of nail,glue and keel.In the geothermal environment,these methods are no longer applicable because of poor security and low reclaim efficiency.The existing lock installation technology is widely applied,but it has its own shortcomings:On the one hand,when the lock is installed,there is a partial superposition of the floor,and a certain amount of installation area is wasted;On the other hand,the European enterprises monopolize the lock technology,which leads to the high cost of patent for the Chinese floor production enterprises.In view of the above situation,it is very necessary to research and design new type of floor connection structure.Taking the long side of the floor as the focus point,the "bridge model","screw welt model" and "thread snap buttons model" are designed and taking the short side of the floor as the focus point,the "bolt model" is designed.Besides meeting the requirements of disassembly and assembly,these models tried to make the structure simple,easy to process,economical and environmental friendly.The finite element method is used to analyze the feasibility of the mechanical properties of the related models.It is mainly to analyze whether the connector and the floor will be damaged during the disassembly process.The results showed that in the "bridge model",the maximum stress and the maximum pulling force produced by the same metal connector directly from the floor are larger than those from the plastic female part.We also learned from simulation that the structure of the floor would be damaged when the metal connectors were pulled out directly from the floor.The tensile effect of the connection structure model is analyzed and compared.The results showed that:PI>PF?PH >PD >PA2=PJ>PG>PB2=PK>PE>PC>PA1>PB1.At last,the 8 aspects,such as the complexity of floor processing,the complexity of the connector,the degree of loss of the installation area,the degree of pre installation,the number of materials used,the tensile effect after the connection,the environmental friendliness and the economy,were analyzed and evaluated.The ranking from high to low is the following:I>A1=D>B1=C>H>E=F>A2>G>B2>J=K.And according to the score,the models are divided into 4 grades: excellent,good,qualified and unqualified.