Tie piece for sandwich thermal insulation firewall of transformer substation

The invention relates to a tie piece for a sandwich thermal insulation firewall of a transformer substation, which is mounted on the sandwich thermal insulation firewall and comprises a forked tie plate, a first anchoring groove and a second anchoring groove, the forked tie plate comprises a horizontal section, a first inclined section and a second inclined section, the first anchoring groove is arranged on the other side of the horizontal section, and the second anchoring groove is arranged on the other side of the second inclined section. The bifurcate pulling and connecting plate has the advantages that due to the fact that the bifurcate pulling and connecting plate is of a bifurcate structure, the bifurcate pulling and connecting plate can provide better mechanical support and stability, and the bifurcate pulling and connecting plate is suitable for occasions needing to bear external force or load; therefore, the stress mechanism of the whole pulling piece for the transformer substation sandwich heat pres