Lifting tree

Abstract

A lifting tree for a Christmas tree includes a trunk consisting of a base cylinder with an upper opening and a lifting cylinder set. The lifting cylinder set includes a plurality of hollow lifting cylinders coupling vertically in sequence and two adjacent lifting cylinders that can move relatively. A limiting structure is arranged between two adjacent lifting cylinders to prevent separation. The lifting cylinder at bottom is coupled with the base cylinder in which a linear module is provided, which includes a mobile unit connected to the lifting cylinder at the top of lifting cylinder set in a fixed position. At the top of each lifting cylinder, there is a connecting piece for connecting branches.

1 . A lifting tree, comprising:
 a trunk consisting of a base cylinder with an upper opening and a lifting cylinder set, wherein the lifting cylinder set comprises a plurality of hollow lifting cylinders which couple vertically in sequence and two adjacent lifting cylinders configured to move relatively; and   a limiting structure arranged between two adjacent lifting cylinders to prevent separation;   wherein the lifting cylinder at the bottom is coupled with the base cylinder and a linear module is provided inside the base cylinder;   the linear module comprises a mobile unit which is connected with the lifting cylinder at the top of the lifting cylinder set fixedly, and the upper end of each lifting cylinder is connected to a connecting piece for connecting branches.   
     
     
         2 . The lifting tree according to  claim 1 , wherein the limiting structure comprises a limit bump arranged at the lower end of the lifting cylinder, and the inner cylinder upper end of the lifting cylinder is provided with a convex ring protruding inwardly. 
     
     
         3 . The lifting tree according to  claim 1 , wherein
 the linear module comprises a screw and a hollow sleeve opening at the lower end, and the hollow sleeve includes internal threads to connect with the screw thread, and the upper end of the hollow sleeve is connected with the lifting cylinder located at the top; and the base cylinder is provided with a motor which connects with the screw in a drive way.   
     
     
         4 . The lifting tree according to  claim 3 , wherein
 a transmission is provided inside the base cylinder and a motor shaft is connected with the screw by the transmission.   
     
     
         5 . The lifting tree according to  claim 1 , wherein
 the connecting piece comprises a fixing portion connected to the lifting cylinder and a connection portion for connection with a plurality of branches, and the connection portion is arranged on the outer surface of the fixing portion in an annular way.   
     
     
         6 . The lifting tree according to  claim 5 , wherein
 the fixing portion is a collar, the connection portion is a connection piece, and the middle of the connection piece is provided with a mounting hole for fixing the branches.   
     
     
         7 . The lifting tree according to  claim 1 , wherein the side of the base cylinder is connected to a plurality of supporting legs. 
     
     
         8 . The lifting tree according to  claim 7 , wherein
 the supporting leg comprises a curved supporting bar and a stiffener, and a first end of the stiffener is fixed to the base cylinder, and a second end is fixed to the supporting bar.   
     
     
         9 . The lifting tree according to  claim 3 , wherein
 the motor is a servo motor, and the base cylinder is equipped with a servo drive connected to a wireless receiver electrically.