| 摘要 |
A water injection flagpole base comprises a first water injection base (2). An adjusting sleeve is fixed on the first water injection base. A flagpole connecting base (7) capable of rotating around a pin shaft is arranged in the adjusting sleeve. A fan-shaped space is formed in the adjusting sleeve. A plurality of positioning tooth grooves (43) distributed along the same circumference is formed in the fan-shaped inner wall of the fan-shaped space in the adjusting sleeve. A waist hole (71) is formed in the lower part of the flagpole connecting base. After the flagpole connecting base is inserted in the adjusting sleeve, the flagpole connecting base is movably connected to the adjusting sleeve through the pin shaft penetrating the waist hole. Several positioning teeth (72) are arranged in the upper part of the flagpole connecting base. When the flagpole connecting base is pulled upwards, the positioning teeth on the flagpole connecting base are disengaged from the positioning tooth grooves in the adjusting sleeve. The flagpole connecting base can swing around the pin shaft in the fan-shaped space of the adjusting sleeve. When the flagpole connecting base is inserted downwards to the bottom, the positioning teeth on the flagpole connecting base are fitted to the positioning tooth grooves in the adjusting sleeve for positioning. The angle of a flagpole can be adjusted conveniently and rapidly, and the flagpole can still vertically stand on a slope. |
