An electrode net tensioning device for preparing upper and lower electrode conductive concrete slabs

Abstract

The invention discloses an electrode net stretching-drawing device for preparing an upper and lower electrodes type conductive concrete slab. The electrode net stretching-drawing device comprises a linear guide rail and two pressure clamps which are oppositely arranged in the linear guide rail direction, wherein at least one of the two pressure clamps can move along the linear guide rail to adjust the distance between the two pressure clamps, and locked and positioned on the linear guide rail; an upper clamping plate and a lower clamping plate are oppositely arranged on the pressure clamps up and down for clamping electrode nets; the upper clamping plate and the lower clamping plate can move relatively up and down; replaceable interval compression bars are arranged between the upper clamping plate and the lower clamping plate; when the upper clamping plate and the lower clamping plate clamp and close two electrode nets oppositely up and down, the interval compression bars are arranged between the two electrode nets to isolate the two electrode nets in parallel. The electrode net stretching-drawing device for preparing the upper and lower electrodes type conductive concrete slab can accurately position, clamp and straighten the two electrode nets in parallel at an interval, so as to ensure the situation that the electrode nets cannot be deformed and displaced, but always kept flat during the preparing process of the conductive concrete slab.

Description

technical field [0001] The invention relates to the technical field of preparation equipment for conductive concrete, in particular to an electrode net tensioning device for preparing upper and lower electrode type conductive concrete slabs. Background technique [0002] Using cement and conductive materials as basic raw materials to make conductive concrete slabs, used for snow melting and deicing of road and bridge decks, and indoor heating floor tiles is currently a research hotspot in the field of building materials. Conductive concrete slabs can be divided into two categories according to the different electrode forms, the upper and lower electrode types and the left and right electrode types. The construction process of the left and right electrode conductive concrete slabs is simple, and the electrodes can be put into the shape at one time after the concrete is poured and vibrated. However, its resistance is large and its heating efficiency is low. Since the distanc...

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Problems solved by technology

The quality control of the electrode grid in the conductive concrete slab has the following three difficulties: 1. The relative position of the electrode grid must be precisely controlled. The distance between the electrode grids determines the size of the resistance between the two. If the electrode grid cannot be precisely controlled Its position, if the two cannot be relatively parallel, it will lead to uneven resistance of the middle conductive layer, which will lead to uneven current, and finally lead to uneven heating of the conductive concrete slab, resulting in temperature cracks

2. At present, the electrodes generally used in the upper and lower electrode type conductive concrete slabs are steel wire mesh. The rigidity of the steel mesh itself is small. During the construction of conductive concrete slabs, the process of pouring and vibrating will cause deformation of the electrode mesh, and it cannot be guaranteed. Flatness

3. As the most commonly used electrode material, steel wire mesh has a fatal weakness. The cement-based material itself is alkaline, so the steel wire mesh is prone to rust in an alkaline environment for a long time, which will affect its conductivity. If carbon fiber cloth and other materials are used as the The electrode can completely eliminate this hidden danger, but the carbon fiber cloth itself is extremely soft, and the electrode net made of carbon fiber cloth is more difficult to locate during the construction process of preparing the conductive concrete slab. To ensure that it does not deform during the construction of conductive concrete slabs

4. In the prior art, the relative distance between the electrode grids can only be controlled by rough measurement during pouring, and the accuracy cannot meet the construction requirements. Due to the limitation of the current construction technology, it can only be made with a thickness of more than 5cm at present. conductive concrete slabs, but it is impossible to make conductive concrete slabs with a smaller thickness, thus limiting the popularization and application of conductive concrete slabs in indoor spaces

5. At present, the construction technology of conductive concrete slabs is determined, and it can only be produced in a single piece, and mass production cannot be carried out

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