Fire-fighting lance jet frame

The utility model relates to a fire-fighting lance jet flow frame which comprises a horizontally-arranged top tray, a supporting bracket is connected to the lower portion of the top tray, trundles are connected to the supporting bracket, a movable positioning mechanism is arranged above the top tray and comprises a movable portion and a positioning portion, and the movable portion and the positioning portion are both connected with the top tray. The water gun head can be placed on the movable part; a lifting rope is fixed to the positioning part and penetrates through the top tray, the lower end of the lifting rope is connected to the supporting bracket, when the supporting bracket is unfolded, the pull rope drives the positioning part to move downwards after being subjected to downward pulling force, and when the supporting bracket is retracted to be in a vertical state, the positioning part is reset under the action of reset force of the reset spring; the water gun head clamping device has the advantages th