Tube coupling unit of instrument shovel handle reaches instrument shovel including this tube coupling unit

The utility model discloses a tube coupling unit of instrument shovel handle reaches instrument shovel including this tube coupling unit. A tube coupling unit of instrument shovel handle, includes thetube coupling body, tube coupling body front end is provided with the connector, tube coupling body rear end be provided with with connector complex jack, be provided with the tapering external screwthread on the connector, the angle of the cone angle of tapering external screw thread is 6~30 degrees, the pore wall of jack be provided with can with tapering matching the external screw's taperinginternal thread. An instrument shovel, including the shovel body and with the handle of shovel body coupling, the handle include at least two sections as above the tube coupling unit, the utility model has the advantages of, the tube coupling unit is through setting up the tapering external screw thread and set up the tapering internal thread on the jack in connector department, the number of turns that need twist when con