On-site coring road surface cleaning auxiliary device

The invention relates to the technical field of road construction equipment.The auxiliary device comprises a water collecting barrel, a drainage faucet is arranged on the side wall of the water collecting barrel, a water inlet of the drainage faucet communicates with the water collecting barrel, a drainage pipe is detachably connected to the drainage faucet, and a water outlet of the drainage pipe communicates with the water collecting barrel; the drainage pipe is communicated with a water outlet of the drainage faucet; one end of the water collecting barrel is provided with a water absorbing piece used for absorbing sewage, the water absorbing piece is detachably connected with the water collecting barrel, a water absorbing hole is formed in the water absorbing piece in a penetrating mode, and the water absorbing hole is coaxially communicated with the water collecting barrel. Through the arrangement of the water absorption piece, sewage left in the water collection barrel can be absorbed, so that residual s